Shoulder Screw Black Steel 1/2-13 * 4-1/4" Grade 8 [Cup Point] [Allen Drive] od_3-1-2 The nylon insert grips the

The nylon insert grips the bolt to resist loosening without damaging threads

The strength of the bolt should match the strength of the nut to prevent damaging threads

This hexagonal bolt has a length of 16" with a threading of 3/4-10 [Partially Threaded]

This hexagonal bolt has a length of 6" with a threading of 1-1/4-12 [Partially Threaded]

black-plated steel nuts resist corrosion in wet environments

Shoulder Screw Black Steel 1/2-13 * 4-1/4" Grade 8 [Cup Point] [Allen Drive] od_3-1-2 The nylon insert grips theComparable to Grade 8 steel, these alloy steel shoulder screws are the strongest we offer. They have a standard shoulder with an undersized tolerance to fit most machinery and equipment. Also known as stripper bolts, they're commonly used in punch and die assemblies, and as an axle or pivot point. The screw has a length of 4 1 4" and a thread of 1 2 13.