M3.5-1.57 x 18 Metric 6-Lobe Pan Head PT Alternative 30 Degree Full Threaded A2 Stainless Steel 3/8-16 NTE It has a hex washer

It has a hex washer head with an indented top for a secure grip

1/4-20 x 1/2 Hex Tap Bolt Low Carbon Fully Threaded Zinc:

This fastener is ideal for use in marine

The bolt is 3 1/2" long and has a diameter of 5/8"

round washer with a 1/4" inside diameter and a 3/8" outside diameter

M3.5-1.57 x 18 Metric 6-Lobe Pan Head PT Alternative 30 Degree Full Threaded A2 Stainless Steel 3/8-16 NTE It has a hex washerThe M3. 5 1. 57 x 18 Metric 6 Lobe Pan Head PT Alternative 30 Degree Full Threaded A2 Stainless Steel screw is a high performance fastener designed for demanding applications. It features a 6 lobe pan head with a 30 degree angle, providing excellent grip and resistance to cam out. The full thread design allows for maximum engagement with the mating material, ensuring a secure and reliable connection. Constructed from A2 stainless steel, this screw