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
Suitable Shaft Size (d)
6.350
mm

(Equiv. 0.25 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 - 6.35x20.7x6.4 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-00635-021-06-2P-S3
Hex Bore Collars - 6.35x20.7x6.4 mm Two Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Out of Stock | Backorder Now | Orders can be expected around Wed, Nov 26, 2025
$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
Suitable Shaft Size (d)
6.350
mm

(Equiv. 0.25 in.)
Outside Diameter (D)
20.70
mm

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

(Equiv. 0.252 in.)
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, 18-8) HRB80    Screw Size: 4-40 UNC   
Part Number: COH-00635-021-06-2P-S3
Hex Bore Collars - 6.35x20.7x6.4 mm Two Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Out of Stock | Backorder Now | Orders can be expected around Wed, Nov 26, 2025
$136.41 AUD
$136.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
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-01270-032-10-2P-S3
Hex Bore Collars - 12.7x31.8x9.5 mm Two Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Out of Stock | Backorder Now | Orders can be expected around Wed, Nov 26, 2025
$111.95 AUD
$134.35 AUD $111.95 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
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-01270-032-10-2P-S3
Hex Bore Collars - 12.7x31.8x9.5 mm Two Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Out of Stock | Backorder Now | Orders can be expected around Wed, Nov 26, 2025
$111.95 AUD
$134.35 AUD $111.95 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
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-01588-038-10-2P-S3
Hex Bore Collars - 15.875x38.1x10.3 mm Two Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Out of Stock | Backorder Now | Orders can be expected around Wed, Nov 26, 2025
$147.41 AUD
$176.89 AUD $147.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
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-01588-038-10-2P-S3
Hex Bore Collars - 15.875x38.1x10.3 mm Two Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Out of Stock | Backorder Now | Orders can be expected around Wed, Nov 26, 2025
$147.41 AUD
$176.89 AUD $147.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
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-01905-048-13-2P-S3
Hex Bore Collars - 19.05x47.6x12.7 mm Two Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Out of Stock | Backorder Now | Orders can be expected around Wed, Nov 26, 2025
$161.68 AUD
$194.02 AUD $161.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
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-01905-048-13-2P-S3
Hex Bore Collars - 19.05x47.6x12.7 mm Two Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Out of Stock | Backorder Now | Orders can be expected around Wed, Nov 26, 2025
$161.68 AUD
$194.02 AUD $161.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
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-02540-054-13-2P-S3
Hex Bore Collars - 25.4x54x12.7 mm Two Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Out of Stock | Backorder Now | Orders can be expected around Wed, Nov 26, 2025
$168.59 AUD
$202.31 AUD $168.59 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
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-02540-054-13-2P-S3
Hex Bore Collars - 25.4x54x12.7 mm Two Piece - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Collar
Out of Stock | Backorder Now | Orders can be expected around Wed, Nov 26, 2025
$168.59 AUD
$202.31 AUD $168.59 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.