1/2-13 x 1 1/4 Unslotted Indented Hex Washer Thread Cutting Screw Type F Fully Threaded Zinc An APP188 and they meet the specifications

and they meet the specifications of ASTM A307

It has a gimlet point for easy penetration into wood and a hex head for easy driving with a wrench

and other projects requiring a reliable and aesthetically pleasing fastener

The split lockwasher helps to prevent the fastener from loosening over time

These 5-40 x 5/8 Phillips fillister head machine screws are fully threaded and made of zinc-plated steel

1/2-13 x 1 1/4 Unslotted Indented Hex Washer Thread Cutting Screw Type F Fully Threaded Zinc An APP188 and they meet the specifications1 2 13 x 1 1 4 Unslotted Indented Hex Washer Thread Cutting Screw Type F Fully Threaded Zinc Anodized: Size: 1 2 13 thread diameter, 1 1 4" length Head: Unslotted indented hex washer head for secure tightening with a hex key Thread: Thread cutting screw designed to cut its own threads in metal or plastic materials Type F: Fully threaded for maximum holding power Material: Steel with zinc anodized finish for corrosion resistance Application: Ideal for