Keys - Machine - Carbon Steel

Keys -> Machine -> Carbon Steel
Width (W) Height (h) Length (L) Indicative
Image
Machine Keys - 4x4x12 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Length (L)
12.00
mm
+/- 0.25
(Equiv. 0.472 in.)
Machine Keys - 4x4x12 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Oversized    End Type: B (Square Ends)   
Part Number: K-0400-0400-1200BO-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity
Width (W) Height (h) Length (L) Indicative
Image
Machine Keys - 4x4x12 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Length (L)
12.00
mm
+/- 0.25
(Equiv. 0.472 in.)
Machine Keys - 4x4x12 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Oversized    End Type: B (Square Ends)   
Part Number: K-0400-0400-1200BO-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity | Backorder now for delivery around Tue, Feb 27, 2029
Machine Keys - 4x4x12 mm - Carbon Steel Key
Width (W)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Length (L)
12.00
mm
+/- 0.25
(Equiv. 0.472 in.)
Machine Keys - 4x4x12 mm - Carbon Steel
Material: Carbon Steel    Finish: Plain    Tolerance Type: Standard Undersized    End Type: A (Rounded Ends)   
Part Number: K-0400-0400-1200A-C (PK-50)
Out of Stock | Backorder Now | Backorder now for delivery around Tue, Aug 25, 2026
$19.32 AUD
$23.18 AUD $19.32 AUD
Priced, Stocked and Sold Per 50 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Machine Keys - 4x4x12 mm - Carbon Steel Key
Width (W)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Length (L)
12.00
mm
+/- 0.25
(Equiv. 0.472 in.)
Machine Keys - 4x4x12 mm - Carbon Steel
Material: Carbon Steel    Finish: Plain    Tolerance Type: Standard Undersized    End Type: A (Rounded Ends)   
Part Number: K-0400-0400-1200A-C (PK-50)
Out of Stock | Backorder Now | Backorder now for delivery around Tue, Aug 25, 2026
$19.32 AUD
$23.18 AUD $19.32 AUD
Priced, Stocked and Sold Per 50 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Machine Keys - 4x4x12 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Length (L)
12.00
mm
+/- 0.25
(Equiv. 0.472 in.)
Machine Keys - 4x4x12 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Oversized    End Type: A (Rounded Ends)   
Part Number: K-0400-0400-1200AO-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity
Machine Keys - 4x4x12 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Length (L)
12.00
mm
+/- 0.25
(Equiv. 0.472 in.)
Machine Keys - 4x4x12 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Oversized    End Type: A (Rounded Ends)   
Part Number: K-0400-0400-1200AO-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity | Backorder now for delivery around Tue, Feb 27, 2029
Machine Keys - 4x4x14 mm - Carbon Steel Key
Width (W)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Length (L)
14.00
mm
+/- 0.25
(Equiv. 0.551 in.)
Machine Keys - 4x4x14 mm - Carbon Steel
Material: Carbon Steel    Finish: Plain    Tolerance Type: Standard Undersized    End Type: A (Rounded Ends)   
Additional stock available from USA subject to Prior Sale = 2682
Part Number: K-0400-0400-1400A-C (PK-5)
35 units (175 pcs) Available Now | Further orders can be expected around Thu, Jul 02, 2026
$3.23 AUD
$3.23 AUD
Priced, Stocked and Sold Per 5 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 35 available can be backordered.
Machine Keys - 4x4x14 mm - Carbon Steel Key
Width (W)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Length (L)
14.00
mm
+/- 0.25
(Equiv. 0.551 in.)
Machine Keys - 4x4x14 mm - Carbon Steel
Material: Carbon Steel    Finish: Plain    Tolerance Type: Standard Undersized    End Type: A (Rounded Ends)   
Additional stock available from USA subject to Prior Sale = 2682
Part Number: K-0400-0400-1400A-C (PK-5)
35 units (175 pcs) Available Now | Further orders can be expected around Thu, Jul 02, 2026
$3.23 AUD
$3.23 AUD
Priced, Stocked and Sold Per 5 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

35 units (175 pcs) Available Now. Backorder if more than 35.
Machine Keys - 4x4x14 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Length (L)
14.00
mm
+/- 0.25
(Equiv. 0.551 in.)
Machine Keys - 4x4x14 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Oversized    End Type: A (Rounded Ends)   
Part Number: K-0400-0400-1400AO-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity
Machine Keys - 4x4x14 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Length (L)
14.00
mm
+/- 0.25
(Equiv. 0.551 in.)
Machine Keys - 4x4x14 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Oversized    End Type: A (Rounded Ends)   
Part Number: K-0400-0400-1400AO-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity | Backorder now for delivery around Tue, Feb 27, 2029
Machine Keys - 4x4x14 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Length (L)
14.00
mm
+/- 0.25
(Equiv. 0.551 in.)
Machine Keys - 4x4x14 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Standard    End Type: B (Square Ends)   
Additional stock available from USA subject to Prior Sale = 3563
Part Number: K-0400-0400-1400B-C (PK-600)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 02, 2026
$135.77 AUD
$162.93 AUD $135.77 AUD
Priced, Stocked and Sold Per 600 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Machine Keys - 4x4x14 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Length (L)
14.00
mm
+/- 0.25
(Equiv. 0.551 in.)
Machine Keys - 4x4x14 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Standard    End Type: B (Square Ends)   
Additional stock available from USA subject to Prior Sale = 3563
Part Number: K-0400-0400-1400B-C (PK-600)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 02, 2026
$135.77 AUD
$162.93 AUD $135.77 AUD
Priced, Stocked and Sold Per 600 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Machine Keys - 4x4x14 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Length (L)
14.00
mm
+/- 0.25
(Equiv. 0.551 in.)
Machine Keys - 4x4x14 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Oversized    End Type: B (Square Ends)   
Part Number: K-0400-0400-1400BO-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity
Machine Keys - 4x4x14 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Length (L)
14.00
mm
+/- 0.25
(Equiv. 0.551 in.)
Machine Keys - 4x4x14 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Oversized    End Type: B (Square Ends)   
Part Number: K-0400-0400-1400BO-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity | Backorder now for delivery around Tue, Feb 27, 2029
Machine Keys - 4x4x15 mm - Carbon Steel Key
Width (W)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Length (L)
15.00
mm
+/- 0.25
(Equiv. 0.591 in.)
Machine Keys - 4x4x15 mm - Carbon Steel
Material: Carbon Steel    Finish: Plain    Tolerance Type: Standard Undersized    End Type: A (Rounded Ends)   
Additional stock available from USA subject to Prior Sale = 116
Part Number: K-0400-0400-1500A-C (PK-375)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 02, 2026
$388.77 AUD
$388.77 AUD
Priced, Stocked and Sold Per 375 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Machine Keys - 4x4x15 mm - Carbon Steel Key
Width (W)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Length (L)
15.00
mm
+/- 0.25
(Equiv. 0.591 in.)
Machine Keys - 4x4x15 mm - Carbon Steel
Material: Carbon Steel    Finish: Plain    Tolerance Type: Standard Undersized    End Type: A (Rounded Ends)   
Additional stock available from USA subject to Prior Sale = 116
Part Number: K-0400-0400-1500A-C (PK-375)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 02, 2026
$388.77 AUD
$388.77 AUD
Priced, Stocked and Sold Per 375 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Machine Keys - 4x4x15 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Length (L)
15.00
mm
+/- 0.25
(Equiv. 0.591 in.)
Machine Keys - 4x4x15 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Oversized    End Type: A (Rounded Ends)   
Part Number: K-0400-0400-1500AO-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity
Machine Keys - 4x4x15 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Length (L)
15.00
mm
+/- 0.25
(Equiv. 0.591 in.)
Machine Keys - 4x4x15 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Oversized    End Type: A (Rounded Ends)   
Part Number: K-0400-0400-1500AO-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity | Backorder now for delivery around Tue, Feb 27, 2029
Machine Keys - 4x4x16 mm - Carbon Steel Key
Width (W)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Length (L)
16.00
mm
+/- 0.25
(Equiv. 0.63 in.)
Machine Keys - 4x4x16 mm - Carbon Steel
Material: Carbon Steel    Finish: Plain    Tolerance Type: Standard Undersized    End Type: A (Rounded Ends)   
Part Number: K-0400-0400-1600A-C (PK-10)
46 units (460 pcs) Available Now | Further orders can be expected around Tue, Jul 07, 2026
$5.77 AUD
$5.77 AUD
Priced, Stocked and Sold Per 10 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 46 available can be backordered.
Machine Keys - 4x4x16 mm - Carbon Steel Key
Width (W)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Length (L)
16.00
mm
+/- 0.25
(Equiv. 0.63 in.)
Machine Keys - 4x4x16 mm - Carbon Steel
Material: Carbon Steel    Finish: Plain    Tolerance Type: Standard Undersized    End Type: A (Rounded Ends)   
Part Number: K-0400-0400-1600A-C (PK-10)
46 units (460 pcs) Available Now | Further orders can be expected around Tue, Jul 07, 2026
$5.77 AUD
$5.77 AUD
Priced, Stocked and Sold Per 10 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

46 units (460 pcs) Available Now. Backorder if more than 46.
Machine Keys - 4x4x15 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Length (L)
15.00
mm
+/- 0.25
(Equiv. 0.591 in.)
Machine Keys - 4x4x15 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Standard Undersized    End Type: B (Square Ends)   
Part Number: K-0400-0400-1500B-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity
Machine Keys - 4x4x15 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Length (L)
15.00
mm
+/- 0.25
(Equiv. 0.591 in.)
Machine Keys - 4x4x15 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Standard Undersized    End Type: B (Square Ends)   
Part Number: K-0400-0400-1500B-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity | Backorder now for delivery around Tue, Feb 27, 2029
Machine Keys - 4x4x15 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Length (L)
15.00
mm
+/- 0.25
(Equiv. 0.591 in.)
Machine Keys - 4x4x15 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Oversized    End Type: B (Square Ends)   
Part Number: K-0400-0400-1500BO-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity
Machine Keys - 4x4x15 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Length (L)
15.00
mm
+/- 0.25
(Equiv. 0.591 in.)
Machine Keys - 4x4x15 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Oversized    End Type: B (Square Ends)   
Part Number: K-0400-0400-1500BO-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity | Backorder now for delivery around Tue, Feb 27, 2029
Machine Keys - 4x4x16 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Length (L)
16.00
mm
+/- 0.25
(Equiv. 0.63 in.)
Machine Keys - 4x4x16 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Oversized    End Type: B (Square Ends)   
Part Number: K-0400-0400-1600BO-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity
Machine Keys - 4x4x16 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Length (L)
16.00
mm
+/- 0.25
(Equiv. 0.63 in.)
Machine Keys - 4x4x16 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Oversized    End Type: B (Square Ends)   
Part Number: K-0400-0400-1600BO-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity | Backorder now for delivery around Tue, Feb 27, 2029
Machine Keys - 4x4x16 mm - Carbon Steel Key
Width (W)
4.00
mm
Height (h)
4.00
mm
Length (L)
16.00
mm
Machine Keys - 4x4x16 mm - Carbon Steel
Material: Carbon Steel    Finish: Plain    Tolerance Type: Standard    End Type: AB (1 end rounded, other end square)   
Part Number: K-0400-0400-1600AB-C (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Jul 11, 2026
$1.32 AUD
$1.58 AUD $1.32 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Machine Keys - 4x4x16 mm - Carbon Steel Key
Width (W)
4.00
mm
Height (h)
4.00
mm
Length (L)
16.00
mm
Machine Keys - 4x4x16 mm - Carbon Steel
Material: Carbon Steel    Finish: Plain    Tolerance Type: Standard    End Type: AB (1 end rounded, other end square)   
Part Number: K-0400-0400-1600AB-C (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Jul 11, 2026
$1.32 AUD
$1.58 AUD $1.32 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Machine Keys - 4x4x16 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Length (L)
16.00
mm
+/- 0.25
(Equiv. 0.63 in.)
Machine Keys - 4x4x16 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Standard    End Type: B (Square Ends)   
Additional stock available from USA subject to Prior Sale = 1129
Part Number: K-0400-0400-1600B-C (PK-100)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 02, 2026
$24.95 AUD
$29.95 AUD $24.95 AUD
Priced, Stocked and Sold Per 100 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Machine Keys - 4x4x16 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Length (L)
16.00
mm
+/- 0.25
(Equiv. 0.63 in.)
Machine Keys - 4x4x16 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Standard    End Type: B (Square Ends)   
Additional stock available from USA subject to Prior Sale = 1129
Part Number: K-0400-0400-1600B-C (PK-100)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 02, 2026
$24.95 AUD
$29.95 AUD $24.95 AUD
Priced, Stocked and Sold Per 100 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Machine Keys - 4x4x16 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Length (L)
16.00
mm
+/- 0.25
(Equiv. 0.63 in.)
Machine Keys - 4x4x16 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Oversized    End Type: A (Rounded Ends)   
Part Number: K-0400-0400-1600AO-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity
Machine Keys - 4x4x16 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Length (L)
16.00
mm
+/- 0.25
(Equiv. 0.63 in.)
Machine Keys - 4x4x16 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Oversized    End Type: A (Rounded Ends)   
Part Number: K-0400-0400-1600AO-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity | Backorder now for delivery around Tue, Feb 27, 2029
Machine Keys - 4x4x20 mm - Carbon Steel Key
Width (W)
4.00
mm
Height (h)
4.00
mm
Length (L)
20.00
mm
Machine Keys - 4x4x20 mm - Carbon Steel
Material: Carbon Steel    Finish: Plain    Tolerance Type: Standard    End Type: AB (1 end rounded, other end square)   
Part Number: K-0400-0400-2000AB-C (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Jul 11, 2026
$1.41 AUD
$1.69 AUD $1.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Machine Keys - 4x4x20 mm - Carbon Steel Key
Width (W)
4.00
mm
Height (h)
4.00
mm
Length (L)
20.00
mm
Machine Keys - 4x4x20 mm - Carbon Steel
Material: Carbon Steel    Finish: Plain    Tolerance Type: Standard    End Type: AB (1 end rounded, other end square)   
Part Number: K-0400-0400-2000AB-C (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Jul 11, 2026
$1.41 AUD
$1.69 AUD $1.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Machine Keys - 4x4x20 mm - Carbon Steel Key
Width (W)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Length (L)
20.00
mm
+/- 0.25
(Equiv. 0.787 in.)
Machine Keys - 4x4x20 mm - Carbon Steel
Material: Carbon Steel    Finish: Plain    Tolerance Type: Standard Undersized    End Type: A (Rounded Ends)   
Additional stock available from USA subject to Prior Sale = 15578
Part Number: K-0400-0400-2000A-C (PK-5)
82 units (410 pcs) Available Now | Further orders can be expected around Thu, Jul 02, 2026
$3.77 AUD
$3.77 AUD
Priced, Stocked and Sold Per 5 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 82 available can be backordered.
Machine Keys - 4x4x20 mm - Carbon Steel Key
Width (W)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Length (L)
20.00
mm
+/- 0.25
(Equiv. 0.787 in.)
Machine Keys - 4x4x20 mm - Carbon Steel
Material: Carbon Steel    Finish: Plain    Tolerance Type: Standard Undersized    End Type: A (Rounded Ends)   
Additional stock available from USA subject to Prior Sale = 15578
Part Number: K-0400-0400-2000A-C (PK-5)
82 units (410 pcs) Available Now | Further orders can be expected around Thu, Jul 02, 2026
$3.77 AUD
$3.77 AUD
Priced, Stocked and Sold Per 5 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

82 units (410 pcs) Available Now. Backorder if more than 82.
Machine Keys - 4x4x18 mm - Carbon Steel Key
Width (W)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Length (L)
18.00
mm
+/- 0.25
(Equiv. 0.709 in.)
Machine Keys - 4x4x18 mm - Carbon Steel
Material: Carbon Steel    Finish: Plain    Tolerance Type: Standard Undersized    End Type: A (Rounded Ends)   
Additional stock available from USA subject to Prior Sale = 1838
Part Number: K-0400-0400-1800A-C (PK-50)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 02, 2026
$29.77 AUD
$35.73 AUD $29.77 AUD
Priced, Stocked and Sold Per 50 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Machine Keys - 4x4x18 mm - Carbon Steel Key
Width (W)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Length (L)
18.00
mm
+/- 0.25
(Equiv. 0.709 in.)
Machine Keys - 4x4x18 mm - Carbon Steel
Material: Carbon Steel    Finish: Plain    Tolerance Type: Standard Undersized    End Type: A (Rounded Ends)   
Additional stock available from USA subject to Prior Sale = 1838
Part Number: K-0400-0400-1800A-C (PK-50)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 02, 2026
$29.77 AUD
$35.73 AUD $29.77 AUD
Priced, Stocked and Sold Per 50 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Machine Keys - 4x4x20 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Length (L)
20.00
mm
+/- 0.25
(Equiv. 0.787 in.)
Machine Keys - 4x4x20 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Oversized    End Type: B (Square Ends)   
Part Number: K-0400-0400-2000BO-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity
Machine Keys - 4x4x20 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Length (L)
20.00
mm
+/- 0.25
(Equiv. 0.787 in.)
Machine Keys - 4x4x20 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Oversized    End Type: B (Square Ends)   
Part Number: K-0400-0400-2000BO-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity | Backorder now for delivery around Tue, Feb 27, 2029
Machine Keys - 4x4x20 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Length (L)
20.00
mm
+/- 0.25
(Equiv. 0.787 in.)
Machine Keys - 4x4x20 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Oversized    End Type: A (Rounded Ends)   
Part Number: K-0400-0400-2000AO-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity
Machine Keys - 4x4x20 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Length (L)
20.00
mm
+/- 0.25
(Equiv. 0.787 in.)
Machine Keys - 4x4x20 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Oversized    End Type: A (Rounded Ends)   
Part Number: K-0400-0400-2000AO-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity | Backorder now for delivery around Tue, Feb 27, 2029
Machine Keys - 4x4x20 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Length (L)
20.00
mm
+/- 0.25
(Equiv. 0.787 in.)
Machine Keys - 4x4x20 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Standard Undersized    End Type: B (Square Ends)   
Additional stock available from USA subject to Prior Sale = 772
Part Number: K-0400-0400-2000B-C (PK-100)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 02, 2026
$33.59 AUD
$40.31 AUD $33.59 AUD
Priced, Stocked and Sold Per 100 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Machine Keys - 4x4x20 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Length (L)
20.00
mm
+/- 0.25
(Equiv. 0.787 in.)
Machine Keys - 4x4x20 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Standard Undersized    End Type: B (Square Ends)   
Additional stock available from USA subject to Prior Sale = 772
Part Number: K-0400-0400-2000B-C (PK-100)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 02, 2026
$33.59 AUD
$40.31 AUD $33.59 AUD
Priced, Stocked and Sold Per 100 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Machine Keys - 4x4x25 mm - Carbon Steel Key
Width (W)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Length (L)
25.00
mm
+/- 0.25
(Equiv. 0.984 in.)
Machine Keys - 4x4x25 mm - Carbon Steel
Material: Carbon Steel    Finish: Plain    Tolerance Type: Standard Undersized    End Type: A (Rounded Ends)   
Additional stock available from USA subject to Prior Sale = 341
Part Number: K-0400-0400-2500A-C (PK-5)
37 units (185 pcs) Available Now | Further orders can be expected around Thu, Jul 02, 2026
$1.77 AUD
$3.19 AUD $1.77 AUD
Priced, Stocked and Sold Per 5 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 37 available can be backordered.
Machine Keys - 4x4x25 mm - Carbon Steel Key
Width (W)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0 / - 0.030
(Equiv. 0.157 in.)
Length (L)
25.00
mm
+/- 0.25
(Equiv. 0.984 in.)
Machine Keys - 4x4x25 mm - Carbon Steel
Material: Carbon Steel    Finish: Plain    Tolerance Type: Standard Undersized    End Type: A (Rounded Ends)   
Additional stock available from USA subject to Prior Sale = 341
Part Number: K-0400-0400-2500A-C (PK-5)
37 units (185 pcs) Available Now | Further orders can be expected around Thu, Jul 02, 2026
$1.77 AUD
$3.19 AUD $1.77 AUD
Priced, Stocked and Sold Per 5 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

37 units (185 pcs) Available Now. Backorder if more than 37.
Machine Keys - 4x4x25 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Length (L)
25.00
mm
+/- 0.25
(Equiv. 0.984 in.)
Machine Keys - 4x4x25 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Oversized    End Type: B (Square Ends)   
Part Number: K-0400-0400-2500BO-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity
Machine Keys - 4x4x25 mm - Carbon Steel C45 Key
Width (W)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Height (h)
4.00
mm
+ 0.030 / - 0.0
(Equiv. 0.157 in.)
Length (L)
25.00
mm
+/- 0.25
(Equiv. 0.984 in.)
Machine Keys - 4x4x25 mm - Carbon Steel C45
Material: Carbon Steel C45    Finish: Plain    Tolerance Type: Oversized    End Type: B (Square Ends)   
Part Number: K-0400-0400-2500BO-C (Each)
Contact Us | Special Order Only - Please contact us if you need a large quantity | Backorder now for delivery around Tue, Feb 27, 2029