4-40X9/16 Three Sixteenths Hex Male Female Standoff Aluminum 1-1/2-12 They have a Phillips flat

They have a Phillips flat head and a fully threaded shaft

This 1/4-28 x 1 1/8 MS24693-C Phillips Flat 100 Degree F/T Machine Screw is made of 300 Series Stainless Steel and meets DFAR requirements

This Cotter Pin is commonly used in automotive

The 2/3 threaded shank allows for a secure hold while leaving a portion of the screw exposed for easy removal

4-40X9/16 Three Sixteenths Hex Male Female Standoff Aluminum 1-1/2-12 They have a Phillips flat4 40 x 9 16" Three Sixteenths Hex Male Female Standoff Aluminum is a type of fastener used to create space between two objects. It consists of a male thread on one end and a female thread on the other, with a hexagonal head in the middle. The male thread screws into one object, while the female thread screws into the other. The standoff is made of aluminum, which is a lightweight and durable material. The 4 40 thread size indicates that the screw has