S-93985A306 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Precise alignment and positioning with a 5/16" diameter shoulder featuring tight tolerances for stable component mounting
• Exceptional corrosion resistance provided by 416 stainless steel material, ideal for harsh industrial environments
• High strength and durability with 120,000 psi tensile strength and Rockwell C26 hardness for demanding applications
• Reliable thread engagement through Class 2A UNC coarse threads ensuring secure fastening and easy assembly
• Convenient installation and removal with 5/32" hex socket drive allowing high torque application in confined spaces
• Smooth head surface preventing damage to mating surfaces and maintaining professional appearance
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for global industrial use

Professional Applications & Engineering Value

This 416 stainless steel shoulder screw with 1/4"-20 UNC threads delivers critical engineering value in precision alignment applications where component positioning is paramount. The 5/16" diameter shoulder with precise fit tolerance acts as a permanent spacer or pivot point, eliminating the need for additional components in assemblies. The coarse thread design provides superior resistance to vibration loosening while the socket head profile enables high torque application in space-constrained environments. Manufactured from corrosion-resistant 416 stainless steel, this shoulder bolt maintains dimensional stability under load with its 120,000 psi tensile strength, making it ideal for machinery, automation systems, and precision instruments where repeated adjustments and long-term reliability are essential.

Specification Summary & Compliance

This precision shoulder screw features Class 2A thread fit per UNC standards with a shoulder diameter tolerance of -0.001" to 0" and shoulder length tolerance of 0" to 0.002" for precise alignment applications. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for industrial use across regulated markets. Manufacturing follows standard specifications for 416 stainless steel shoulder screws with right-hand UNC coarse threads and hex socket drive configuration.