Socket Shoulder Screws vs Stripper Bolts: Key Differences
By Mutual Screw & Supply | Published: 2026-10-26
Category: Comparisons
Compare socket shoulder screws and stripper bolts: design, precision, and applications. Learn when to choose each for your project.
Quick answer
Socket shoulder screws (like Holo-Krome 08123) and stripper bolts serve similar roles as pivot or locating fasteners, but differ in shoulder precision, head style, and intended use. Shoulder screws offer a precision ground bearing surface for rotating or sliding parts; stripper bolts prioritize a hardened, wear-resistant pad for stripping or ejecting workpieces.
Precision vs. Wear Resistance
Socket shoulder screws feature a precision ground shoulder that acts as a bearing surface, axle, or pivot. The shoulder diameter is held to tight tolerances, making them ideal for applications where consistent fit and smooth rotation are critical.
Stripper bolts (also called shoulder bolts or stripper screws) typically have a hardened, ground shoulder designed to withstand repeated impact and abrasion in die and mold applications. Their shoulder is often less precisely toleranced than a socket shoulder screw, but the hardened surface resists wear from stripping action.
Head Style and Drive
Socket shoulder screws use a hex socket drive and a low-profile head, allowing them to be recessed or used in tight spaces. Stripper bolts often have a larger, slotted or hex head that provides a positive stop for the stripper plate.
Tradeoffs at a glance
- Shoulder precision: Socket shoulder screws have a precision ground shoulder held to tight tolerances for consistent fit as a bearing surface. Stripper bolts have a hardened shoulder that may be less precise but resists wear. Choose socket shoulder screws when fit and rotation accuracy matter; choose stripper bolts when wear resistance is the priority.
- Head style: Socket shoulder screws use a hex socket drive with a low-profile head. Stripper bolts often have a larger head (slotted or hex) designed to stop against a stripper plate. Socket shoulder screws suit recessed or space-constrained assemblies; stripper bolts work best where a positive head stop is needed.
- Typical applications: Socket shoulder screws are used as pivots, axles, or locating pins in machinery, jigs, and fixtures. Stripper bolts are common in stamping dies, where they strip the workpiece from the punch. Match the fastener to the motion: rotating/sliding parts need socket shoulder screws; stripping/ejecting parts need stripper bolts.
Product facts
- HOLO-KROME 08123 5/8" X 5-1/2" Socket Shoulder Screws | Socket Head | Socket Drive | Alloy Steel Thermal Black Oxide (10 / Pkg.): Holo-Krome 08123 socket shoulder screw has a precision ground shoulder of 5/8" diameter and 5-1/2" length, made from alloy steel with thermal black oxide finish. The precision ground shoulder provides a consistent bearing surface for rotating or sliding components, reducing wear and ensuring accurate positioning.
HOLO-KROME 08123 5/8" X 5-1/2" Socket Shoulder Screws | Socket Head | Socket Drive | Alloy Steel Thermal Black Oxide (10 / Pkg.)
Which one should you choose?
Best for
- Applications requiring a precision bearing surface for rotating or sliding components
- Assemblies where consistent shoulder diameter and fit are critical
Not for
- Die stripping applications where a hardened, wear-resistant shoulder is needed
- Situations requiring a large head to provide a positive stop for a stripper plate
