Nominal Size: 1/2"
Thread: 16
Length: 1-3/8"
Material: Steel
Finish: Zinc
Head Style: Hex (Hex)
Style: Axle Bolt
Type: Shoulder Bolt

A shoulder screw differs from machine screws in that the shank is ground to a precise diameter, known as the shoulder, and the threaded portion is smaller in diameter than the shoulder. Shoulder bolt specifications call out the shoulder diameter, shoulder length, and threaded diameter; the threaded length is fixed, based on the threaded diameter, and usually quite short. It is usually used for revolving joints in mechanisms and linkages; when used as a guide for the stripper plate in a die set its called a stripper bolt.