Collars - Hex Bore - One Piece - 303 Stainless Steel

Collars -> Hex Bore -> One Piece -> 303 Stainless Steel

There are 6 products in the sub-categories of Collars - Hex Bore - One Piece - 303 Stainless Steel. Browse the Collars - Hex Bore - One Piece - 303 Stainless Steel products table.

Category Details

A selection of 303 Stainless Steel One Piece Hex Bore Collars. This is the main category in this series

  • Simple, ring-shaped component, typically made of metal or plastic, that fastens around a hex shaped shaft to hold other parts in place or to act as a mechanical stop.
  • Essential in power transmission applications for securing items like bearings, sprockets, and gear assemblies.

Miniature Bearings Australia - MBA Minibearings

Additional resources:


A more concise listing may be found in the Collars - Hex Bore - One Piece - 303 Stainless Steel category on the Small Parts & Bearings online store.
Suitable Shaft Size (d) Outside Diameter (D) Overall Width (S) Screw Size Indicative
Image
Hex Bore Collars - 7.938x20.7x6.4 mm One Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Suitable Shaft Size (d)
7.938
mm

(Equiv. 0.313 in.)
Outside Diameter (D)
20.70
mm

(Equiv. 0.815 in.)
Overall Width (S)
6.4
mm

(Equiv. 0.252 in.)
Screw Size
4-40 UNC
Hex Bore Collars - 7.938x20.7x6.4 mm - Stainless Steel 303/304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80   
Part Number: COH-00794-021-06-1P-S3 (Each)
1 Available Now | Further orders can be expected around Mon, Jan 19, 2026
$77.14 AUD
$92.56 AUD $77.14 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 1 available can be backordered.
Suitable Shaft Size (d) Outside Diameter (D) Overall Width (S) Indicative
Image
Hex Bore Collars - 7.938x20.7x6.4 mm One Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Suitable Shaft Size (d)
7.938
mm

(Equiv. 0.313 in.)
Outside Diameter (D)
20.70
mm

(Equiv. 0.815 in.)
Overall Width (S)
6.4
mm

(Equiv. 0.252 in.)
Hex Bore Collars - 7.938x20.7x6.4 mm - Stainless Steel 303/304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Screw Size: 4-40 UNC   
Part Number: COH-00794-021-06-1P-S3 (Each)
1 Available Now | Further orders can be expected around Mon, Jan 19, 2026
$77.14 AUD
$92.56 AUD $77.14 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

1 Available Now. Backorder if more than 1.
Hex Bore Collars - 9.525x27x7.9 mm One Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Suitable Shaft Size (d)
9.525
mm

(Equiv. 0.375 in.)
Outside Diameter (D)
27.00
mm

(Equiv. 1.063 in.)
Overall Width (S)
7.9
mm

(Equiv. 0.311 in.)
Screw Size
6-32 UNC (3.5mm)
Hex Bore Collars - 9.525x27x7.9 mm - Stainless Steel 303/304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80   
Part Number: COH-00953-027-08-1P-S3 (Each)
1 Available Now | Further orders can be expected around Mon, Jan 19, 2026
$72.32 AUD
$86.78 AUD $72.32 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 1 available can be backordered.
Hex Bore Collars - 9.525x27x7.9 mm One Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Suitable Shaft Size (d)
9.525
mm

(Equiv. 0.375 in.)
Outside Diameter (D)
27.00
mm

(Equiv. 1.063 in.)
Overall Width (S)
7.9
mm

(Equiv. 0.311 in.)
Hex Bore Collars - 9.525x27x7.9 mm - Stainless Steel 303/304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Screw Size: 6-32 UNC (3.5mm)   
Part Number: COH-00953-027-08-1P-S3 (Each)
1 Available Now | Further orders can be expected around Mon, Jan 19, 2026
$72.32 AUD
$86.78 AUD $72.32 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

1 Available Now. Backorder if more than 1.
Hex Bore Collars - 12.7x31.8x9.5 mm One Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Suitable Shaft Size (d)
12.700
mm

(Equiv. 0.5 in.)
Outside Diameter (D)
31.80
mm

(Equiv. 1.252 in.)
Overall Width (S)
9.5
mm

(Equiv. 0.374 in.)
Screw Size
8-32 UNC (4.17mm)
Hex Bore Collars - 12.7x31.8x9.5 mm - Stainless Steel 303/304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80   
Part Number: COH-01270-032-10-1P-S3 (Each)
Out of Stock | Backorder Now | Orders can be expected around Mon, Jan 19, 2026
$90.41 AUD
$108.49 AUD $90.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Hex Bore Collars - 12.7x31.8x9.5 mm One Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Suitable Shaft Size (d)
12.700
mm

(Equiv. 0.5 in.)
Outside Diameter (D)
31.80
mm

(Equiv. 1.252 in.)
Overall Width (S)
9.5
mm

(Equiv. 0.374 in.)
Hex Bore Collars - 12.7x31.8x9.5 mm - Stainless Steel 303/304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Screw Size: 8-32 UNC (4.17mm)   
Part Number: COH-01270-032-10-1P-S3 (Each)
Out of Stock | Backorder Now | Orders can be expected around Mon, Jan 19, 2026
$90.41 AUD
$108.49 AUD $90.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Hex Bore Collars - 15.875x38.1x10.3 mm One Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Suitable Shaft Size (d)
15.875
mm

(Equiv. 0.625 in.)
Outside Diameter (D)
38.10
mm

(Equiv. 1.5 in.)
Overall Width (S)
10.3
mm

(Equiv. 0.406 in.)
Screw Size
10-32 UNF
Hex Bore Collars - 15.875x38.1x10.3 mm - Stainless Steel 303/304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80   
Part Number: COH-01588-038-10-1P-S3 (Each)
1 Available Now | Further orders can be expected around Mon, Jan 19, 2026
$95.86 AUD
$115.04 AUD $95.86 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 1 available can be backordered.
Hex Bore Collars - 15.875x38.1x10.3 mm One Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Suitable Shaft Size (d)
15.875
mm

(Equiv. 0.625 in.)
Outside Diameter (D)
38.10
mm

(Equiv. 1.5 in.)
Overall Width (S)
10.3
mm

(Equiv. 0.406 in.)
Hex Bore Collars - 15.875x38.1x10.3 mm - Stainless Steel 303/304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Screw Size: 10-32 UNF   
Part Number: COH-01588-038-10-1P-S3 (Each)
1 Available Now | Further orders can be expected around Mon, Jan 19, 2026
$95.86 AUD
$115.04 AUD $95.86 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

1 Available Now. Backorder if more than 1.
Hex Bore Collars - 19.05x47.6x12.7 mm One Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Suitable Shaft Size (d)
19.050
mm

(Equiv. 0.75 in.)
Outside Diameter (D)
47.60
mm

(Equiv. 1.874 in.)
Overall Width (S)
12.7
mm

(Equiv. 0.5 in.)
Screw Size
1/4-28 UNF (6.35mm)
Hex Bore Collars - 19.05x47.6x12.7 mm - Stainless Steel 303/304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80   
Part Number: COH-01905-048-13-1P-S3 (Each)
1 Available Now | Further orders can be expected around Mon, Jan 19, 2026
$134.14 AUD
$160.96 AUD $134.14 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 1 available can be backordered.
Hex Bore Collars - 19.05x47.6x12.7 mm One Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Suitable Shaft Size (d)
19.050
mm

(Equiv. 0.75 in.)
Outside Diameter (D)
47.60
mm

(Equiv. 1.874 in.)
Overall Width (S)
12.7
mm

(Equiv. 0.5 in.)
Hex Bore Collars - 19.05x47.6x12.7 mm - Stainless Steel 303/304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Screw Size: 1/4-28 UNF (6.35mm)   
Part Number: COH-01905-048-13-1P-S3 (Each)
1 Available Now | Further orders can be expected around Mon, Jan 19, 2026
$134.14 AUD
$160.96 AUD $134.14 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

1 Available Now. Backorder if more than 1.
Hex Bore Collars - 25.4x54x12.7 mm One Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Suitable Shaft Size (d)
25.400
mm

(Equiv. 1 in.)
Outside Diameter (D)
54.00
mm

(Equiv. 2.126 in.)
Overall Width (S)
12.7
mm

(Equiv. 0.5 in.)
Screw Size
1/4-28 UNF (6.35mm)
Hex Bore Collars - 25.4x54x12.7 mm - Stainless Steel 303/304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80   
Part Number: COH-02540-054-13-1P-S3 (Each)
Out of Stock | Backorder Now | Orders can be expected around Mon, Jan 19, 2026
$140.41 AUD
$168.49 AUD $140.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Hex Bore Collars - 25.4x54x12.7 mm One Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Suitable Shaft Size (d)
25.400
mm

(Equiv. 1 in.)
Outside Diameter (D)
54.00
mm

(Equiv. 2.126 in.)
Overall Width (S)
12.7
mm

(Equiv. 0.5 in.)
Hex Bore Collars - 25.4x54x12.7 mm - Stainless Steel 303/304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Screw Size: 1/4-28 UNF (6.35mm)   
Part Number: COH-02540-054-13-1P-S3 (Each)
Out of Stock | Backorder Now | Orders can be expected around Mon, Jan 19, 2026
$140.41 AUD
$168.49 AUD $140.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.