S-91829A303 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Precise alignment and smooth rotation thanks to the precisely machined 5/16" diameter shoulder with tight tolerance control
• Reliable thread engagement with Class 2A UNC coarse threads ensuring consistent fastening performance
• High strength durability with 70,000 psi tensile strength and Rockwell B55 hardness for heavy-duty applications
• Easy installation and removal featuring a standard socket head design compatible with common tools
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for safe industrial use
• Versatile right-hand threading compatible with standard UNC 1/4"-20 components and assemblies

Professional Applications & Engineering Value

This precision shoulder screw addresses critical alignment and wear challenges in mechanical assemblies where rotating components must maintain exact positioning. The 18-8 stainless steel construction with passivated finish provides exceptional resistance to corrosion and chemical exposure, making it suitable for food processing, medical equipment, and outdoor machinery applications. The UNC coarse threads with Class 2A fit ensure rapid installation while maintaining vibration resistance, while the precisely controlled shoulder diameter and length serve as reliable bearing surfaces or pivot points in automated systems, reducing component wear and extending equipment service life.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit and shoulder tolerances (diameter: -0.001" to 0", length: 0" to 0.002"). Features UNC 1/4"-20 coarse threads with right-hand direction and standard socket head profile. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial applications.