S-93691A370 10-32 MS51576-25, NASM51576 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments
• Precise component alignment ensured by a 1-1/2" shoulder length with tight ±0.002" tolerance for stable assemblies
• Reliable torque transmission through a smooth socket head with 1/8" hex drive, reducing tool slippage
• Consistent thread engagement with Class 2A fit and 10-32 UNF fine threads for secure fastening
• High mechanical strength delivering 70,000 psi tensile strength and Rockwell B55 hardness for demanding loads
• Regulatory compliance meeting MS51576-25 specifications, RoHS 3, and REACH for global industrial use
• Reduced maintenance needs due to durable materials and precise shoulder diameter tolerances for long service life

Professional Applications & Engineering Value

This 10-32 UNF shoulder screw is engineered to address critical alignment challenges in industrial machinery, automation systems, and precision instruments. The 1-1/2" shoulder length with minimal tolerance provides a stable pivot or bearing surface, eliminating misalignment and reducing wear on moving parts. Made from 18-8 stainless steel with a passivated finish, it resists corrosion in humid or chemical exposures, while the Class 2A thread fit ensures consistent clamping force. The socket head design with a 1/8" hex drive allows for easy installation in confined spaces, making it ideal for alignment pin screws in assemblies requiring repeatable accuracy and durability.

Specification Summary & Compliance

The screw adheres to Class 2A thread fit and UNF thread standards, with a shoulder diameter tolerance of -0.001" to 0" and length tolerance of 0" to 0.002" for precise fits. It complies with MS51576-25 (NASM51576) manufacturing specifications, and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for regulated industries.