3/8 x 1/2 Alloy Steel Socket Head Shoulder Screw (Stripper Bolt) with Nylon Insert fits inch stripper-bolt applications where shoulder length, shoulder diameter, and thread retention all matter. The nylon pellet belongs in the threaded end, so it adds prevailing torque without changing the working shoulder surface. That nylon insert helps the screw resist backing out during cyclic shock, vibration, or press operation without implying permanent locking.

Specify this configuration for fixture rebuilds, packaging equipment details, sliding plates, and precision stops when top-side socket access and a consistent shoulder surface are both important. Thread length is nominal, so review the drawing or service record when replacing an existing die component.

Cold Headers assists with specialty socket products, replacement fasteners, and nylon-insert shoulder screw requirements. Confirm the working shoulder length, tapped-hole depth, hex key clearance, and nylon insert position during replacement sourcing.

Technical Highlights

• Shoulder Diameter: 3/8 in. nominal; 0.373 max / 0.371 min
• Shoulder Length: 1/2 in.
• Thread Size and Nominal Thread Length: 5/16-18 x 1/2 in.
• Head Diameter: 0.562 max / 0.543 min
• Head Height: 0.250 max / 0.240 min
• Hex Key Size: 3/16 in.
• Material: Heat-Treated Alloy Steel
• Locking Feature: Nylon insert in threaded end, providing prevailing torque
• Nylon Insert Diameter (P): 1/8 in.
• Nylon Insert Location (N): 13/64 in. (+/-1/2 pitch)

Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.