Split Lock Washer, Fits Bolt Size 5/16 in Steel, Black Oxide Finish, 100 PK

CONTRACTOR SELECT — Lock Washers — Split Lock Washer, Fits Bolt Size 5/16 in Steel, Black Oxide Finish, 100 PK

This Lock Washers from CONTRACTOR SELECT supports day-to-day operations where predictable fit and dependable handling matter.

Quick specs

• Material: Steel
• Finish: Black Oxide
• Color: Black
• For Screw Size: 5/16 in
• Manufacturer Part Number: U37180.031.0001
• UPC: -

Product information

• UPC: -
• Country of Origin: Multiple
• Manufacturer Part Number: U37180.031.0001

Dimensions

• Outside Diameter - Minimum: 19/32 in
• Bearing Width - Minimum: 3/32 in
• Inside Diameter - Maximum: 21/64 in
• Minimum Inside Diameter: 5/16 in
• Outside Diameter - Maximum: 19/32 in
• For Screw Size: 5/16 in
• Outside Diameter: 0.593 in
• Minimum Thickness: 0.097 in
• Maximum Thickness: 0.097 in
• Inside Diameter: 0.314 in
• Outside Diameter Tolerance: +/-0.01 in
• Inside Diameter Tolerance: +/-0.005 in
• Section Width - Minimum: 1/8 in

Details

• System of Measurement: Inch
• Material Grade/Class: Not Graded
• Color: Black
• Rockwell Hardness: C38
• Thickness Tolerance: +/-0.005 in
• Removable: Removable
• Lock Washer Type: Split Lock
• Pack Size: Small Pack
• Made in North America: Not Made in North America
• Minimum Temperature: 10 Degrees F
• Material Quality Standards: ASTM A307A, SAE J429
• Maximum Temperature: 275 Degrees F
• Manufacturer Location: Globally Sourced
• Dimensional Standards: ASME B18.21.1
• Washer Type: Heavy
• Hardness: 38 HRC
• Type: Split Lock Washer
• Item: Split Lock Washer
• Material: Steel
• Finish: Black Oxide
• Standards: ASME B18.21.1

This Lock Washers is chosen for predictable fit and professional handling.

Recommended for inventory replenishment and standardization and designed to support reliable operation in demanding environments.

Highlights

• Clear specification formatting helps reduce ordering mistakes.
• Organized for straightforward purchasing and stocking.
• Suitable for maintenance, repair, and project-based procurement.
• Helps keep specifications consistent across replacements and replenishment cycles.

Notes: Confirm fit, compatibility, and any site-specific requirements prior to ordering or installation.