5/16-18x1 unslotted indented hex washer thread cutting screw type 1 fully threaded zinc. Thread-cutting type-1 threaded screws are used in steel sheets, sructural shapes, special alloy steels, cast iron, brass or plastics. Stainless steel material into which the screw is to cut threads should have a lower hardness by 10-20 rockwell hardness.
- Indented hex washer head offers advantages of hex head, plus greater protection to mating surface.
- Size 5/16-18
- Manufacturers part number 31161w
- Package qty 1000
- Length inches 1
- Country of origin Import
- Drive Unslotted
- Finish Zinc
- Head Indented hex washer
