有頭螺絲，10-32 x 3"，內六角

The 3-inch length was exactly what I needed for a custom jig setup, and the socket head grabbed the Allen key right away without slipping. Threads are clean and consistent through the whole shaft.

The socket drive grips the Allen key perfectly, no wobble or stripping even when torqued down on my bench setup. These 10-32s came in clean with uniform threads all the way to the 3-inch end. Exactly what I needed for a snug fit in the tapped holes.

The socket head drive took my Allen key cleanly and seated flush in the bench fixture without any wobble. Threads cut smoothly into the tapped hole from the first turn, which saved me a solid five minutes of fiddling. Exactly what I needed for a snug, reliable hold on the jig.