Collars - Hex Bore - Two Piece - 303 Stainless Steel

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

There are 5 products in the sub-categories of Collars - Hex Bore - Two Piece - 303 Stainless Steel. Browse the Collars - Hex Bore - Two Piece - 303 Stainless Steel products table.

Category Details

A selection of 303 Stainless Steel Two 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 - Two 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 - 6.35x20.7x6.4 mm Two Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Suitable Shaft Size (d)
6.350
mm
Outside Diameter (D)
20.70
mm
Overall Width (S)
6.4
mm
Screw Size
4-40 UNC
Hex Bore Collars - 6.35x20.7x6.4 mm - Stainless Steel 303/304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 303/304 (Similar to A2 or 18-8) HRB80   
Part Number: COH-00635-021-06-2P-S3 (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Jun 27, 2026
$136.41 AUD
$136.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Suitable Shaft Size (d) Outside Diameter (D) Overall Width (S) Indicative
Image
Hex Bore Collars - 6.35x20.7x6.4 mm Two Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Suitable Shaft Size (d)
6.350
mm
Outside Diameter (D)
20.70
mm
Overall Width (S)
6.4
mm
Hex Bore Collars - 6.35x20.7x6.4 mm - Stainless Steel 303/304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 303/304 (Similar to A2 or 18-8) HRB80    Screw Size: 4-40 UNC   
Part Number: COH-00635-021-06-2P-S3 (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Jun 27, 2026
$136.41 AUD
$136.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Hex Bore Collars - 12.7x31.8x9.5 mm Two Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Suitable Shaft Size (d)
12.700
mm
Outside Diameter (D)
31.80
mm
Overall Width (S)
9.5
mm
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 or 18-8) HRB80   
Part Number: COH-01270-032-10-2P-S3 (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Jun 27, 2026
$111.95 AUD
$134.35 AUD $111.95 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Hex Bore Collars - 12.7x31.8x9.5 mm Two Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Suitable Shaft Size (d)
12.700
mm
Outside Diameter (D)
31.80
mm
Overall Width (S)
9.5
mm
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 or 18-8) HRB80    Screw Size: 8-32 UNC (4.17mm)   
Part Number: COH-01270-032-10-2P-S3 (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Jun 27, 2026
$111.95 AUD
$134.35 AUD $111.95 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Hex Bore Collars - 15.875x38.1x10.3 mm Two Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Suitable Shaft Size (d)
15.875
mm
Outside Diameter (D)
38.10
mm
Overall Width (S)
10.3
mm
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 or 18-8) HRB80   
Part Number: COH-01588-038-10-2P-S3 (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Jun 27, 2026
$147.41 AUD
$176.89 AUD $147.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Hex Bore Collars - 15.875x38.1x10.3 mm Two Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Suitable Shaft Size (d)
15.875
mm
Outside Diameter (D)
38.10
mm
Overall Width (S)
10.3
mm
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 or 18-8) HRB80    Screw Size: 10-32 UNF   
Part Number: COH-01588-038-10-2P-S3 (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Jun 27, 2026
$147.41 AUD
$176.89 AUD $147.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Hex Bore Collars - 19.05x47.6x12.7 mm Two Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Suitable Shaft Size (d)
19.050
mm
Outside Diameter (D)
47.60
mm
Overall Width (S)
12.7
mm
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 or 18-8) HRB80   
Part Number: COH-01905-048-13-2P-S3 (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Jun 27, 2026
$161.68 AUD
$194.02 AUD $161.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Hex Bore Collars - 19.05x47.6x12.7 mm Two Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Suitable Shaft Size (d)
19.050
mm
Outside Diameter (D)
47.60
mm
Overall Width (S)
12.7
mm
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 or 18-8) HRB80    Screw Size: 1/4-28 UNF (6.35mm)   
Part Number: COH-01905-048-13-2P-S3 (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Jun 27, 2026
$161.68 AUD
$194.02 AUD $161.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Hex Bore Collars - 25.4x54x12.7 mm Two Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Suitable Shaft Size (d)
25.400
mm
Outside Diameter (D)
54.00
mm
Overall Width (S)
12.7
mm
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 or 18-8) HRB80   
Part Number: COH-02540-054-13-2P-S3 (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Jun 27, 2026
$168.59 AUD
$202.31 AUD $168.59 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Hex Bore Collars - 25.4x54x12.7 mm Two Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Suitable Shaft Size (d)
25.400
mm
Outside Diameter (D)
54.00
mm
Overall Width (S)
12.7
mm
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 or 18-8) HRB80    Screw Size: 1/4-28 UNF (6.35mm)   
Part Number: COH-02540-054-13-2P-S3 (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Jun 27, 2026
$168.59 AUD
$202.31 AUD $168.59 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.