S-92952A140 4-40 Shoulder Screws

Key Features & Benefits at a Glance

• Easy manual operation with knurled round head design for secure grip without tools
• Superior corrosion resistance from 18-8 stainless steel construction in harsh environments
• High torque transmission capability with 70,000 psi tensile strength for demanding applications
• Precise component alignment through controlled shoulder diameter and length tolerances
• Reliable thread engagement with Class 2A UNC coarse threads for quick assembly
• Durable long-term performance backed by Rockwell B83 hardness rating
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global markets

Professional Applications & Engineering Value

This 18-8 stainless steel thumb shoulder screw solves critical alignment and accessibility challenges in precision assemblies. The knurled round head provides tool-free adjustment in confined spaces, while the precise shoulder dimensions (1/8" diameter, 5/16" length) ensure accurate component positioning in machinery, electronics, and optical equipment. The 4-40 UNC coarse threads with Class 2A fit enable rapid installation in production environments, and the 70,000 psi tensile strength maintains integrity under vibration and load. Ideal for industrial thumb screw applications requiring both manual accessibility and engineering precision.

Specification Summary & Compliance

Manufactured to inch system specifications with Class 2A thread fit and precise shoulder tolerances (diameter: -0.001" to 0", length: 0" to 0.002"). Threads conform to UNC standards with right-hand direction and coarse spacing. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility and global market acceptance.