M3-0.5 X 40mm Socket Cap Screws | Hex Socket Drive | Partially Threaded | Class 12.9 Alloy Steel Thermal Black Oxide (100 / Pkg.) External Retaining Rings 5/16-18 X 2" Carriage Bolts

5/16-18 X 2" Carriage Bolts in A307 Grade A Zinc Plated Steel

These Buna-N (Nitrile) o-rings are precision-molded to 190 mm inner diameter and 3 mm cross-section

uncoated HSS edge provides durable cutting action and predictable chip formation

minimizes cam-out risk under torque

and metal fabrication for fixtures

M3-0.5 X 40mm Socket Cap Screws | Hex Socket Drive | Partially Threaded | Class 12.9 Alloy Steel Thermal Black Oxide (100 / Pkg.) External Retaining Rings 5/16-18 X 2" Carriage BoltsClass 12. 9 Alloy Steel Thermal Black Oxide socket cap screws, size M3 0. 5 x 40mm. A dependable fastener for machinery, tooling, and general industrial use. Class 12. 9 Alloy Steel Thermal Black Oxide construction partially threaded configuration Hex socket (Allen) drive For machinery, tooling, and general purpose fastening Specifications Thread Size: M3 0. 5 Length: 40mm Material: Class 12. 9 Alloy Steel Thermal Black Oxide Grade: Class 12. 9 Pack