3/8 x 5/8 Alloy Steel Socket Head Shoulder Screw (Stripper Bolt) with Nylon Insert uses a ground shoulder to guide, space, or support motion while the nylon-insert threaded end supplies prevailing torque. The ground shoulder works as the bearing, guide, pivot, spacer, or travel-control surface, while the smaller 5/16-18 threaded end anchors into the die shoe or fixture. That nylon insert helps the screw resist backing out during cyclic shock, vibration, or press operation without implying permanent locking.
In progressive dies, stripper plate return, guide pins, and die-shoe repair, the shoulder length helps establish travel or stand-off while the smaller 5/16-18 thread retains the screw. Alloy steel suits strength-focused tooling, but the part should be kept oiled or indoors when exposure is a concern. For joints torqued once and left alone, compare plain Alloy Steel Socket Head Stripper Bolts.
Cold Headers has supplied specialty socket fasteners since 1962, with practical support for hard-to-find stripper bolt sizes. Need the pellet in a non-catalog size or a different location? In-house pelletizing means we can do that. Check the shoulder fit, threaded-end engagement, head clearance, and pellet location when comparing this part to an existing screw.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
