Metric Sizes ISO 7379 A2 (18-8) Stainless Steel Shoulder Socket Head Cap Screw
ISO 7379 A2 Stainless Steel Shoulder Socket Head Cap Screws
Metric Precision Fasteners for Alignment, Spacing, and Load Support
Metric ISO 7379 A2 (18-8) stainless steel shoulder socket head cap screws are precision-engineered fasteners designed for applications that require accurate alignment, controlled spacing, and reliable load-bearing performance. Commonly referred to as shoulder bolts or stripper bolts, these fasteners feature a smooth, unthreaded shoulder that acts as a precision bearing surface, making them ideal for assemblies involving rotation, sliding motion, or exact component positioning.
A2 (18-8) Stainless Steel Material
Corrosion Resistance with Mechanical Strength
Manufactured from A2 stainless steel (18-8 equivalent), these shoulder screws provide excellent resistance to corrosion, oxidation, and moisture exposure. This makes them well suited for use in outdoor environments, washdown applications, food processing equipment, and marine-adjacent installations. A2 stainless steel offers dependable strength while maintaining a clean, non-magnetic finish that meets demanding industrial standards.
ISO 7379 Metric Standard
Consistent Fit and International Compatibility
Designed to ISO 7379 specifications, these shoulder socket head cap screws deliver consistent shoulder diameter, shoulder length, and thread geometry for precise fit and interchangeability. Metric sizing ensures compatibility with global machinery, tooling, and equipment, making them a preferred choice for OEMs, maintenance teams, and international manufacturing operations.
Shoulder Design for Precision Applications
Load Distribution and Alignment Control
The precision-ground shoulder provides a smooth bearing surface that supports shear loads, maintains alignment, and minimizes wear between mating components. This design allows the threaded portion to handle clamping force while the shoulder absorbs lateral loads—ideal for pivots, guides, rollers, linkages, and moving assemblies.
Socket Head Configuration
High Torque in Compact Spaces
The socket head design allows for high torque application using a hex key or Allen wrench, making installation efficient even in confined spaces. The recessed drive ensures a clean appearance and reliable engagement during assembly and maintenance.
Common Applications
Trusted Across Precision Industries
ISO 7379 A2 stainless steel shoulder screws are widely used in automation systems, food and beverage equipment, packaging machinery, medical devices, marine hardware, and industrial tooling. Their combination of corrosion resistance, precision geometry, and load-handling capability makes them an essential fastener for high-performance metric assemblies.