S-91259A472 10-24 ASME B18.3, ASTM A574 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional durability with 140,000 psi tensile strength and Rockwell C32 hardness for reliable performance in demanding industrial environments
• Superior corrosion resistance through black oxide finish, extending service life in challenging operating conditions
• Precise alignment capabilities with 1/4" shoulder diameter and 1 5/8" shoulder length for accurate component positioning
• Secure fastening performance with Class 3A thread fit and 10-24 UNC coarse thread design for vibration resistance
• Easy installation and removal using standard 1/8" hex drive tools with knurled head for improved grip
• Industry-standard compliance meeting ASME B18.3 specifications for guaranteed dimensional accuracy and reliability
• Environmental responsibility with RoHS 3 and REACH compliance for sustainable manufacturing practices

Professional Applications & Engineering Value

This alloy steel shoulder screw delivers exceptional engineering value in precision assembly applications where component alignment and vibration resistance are critical. The black oxide finish provides superior corrosion protection in industrial environments, while the 10-24 UNC coarse thread with Class 3A fit ensures secure fastening in high-stress applications. The precision shoulder diameter and length maintain accurate spacing between components in machinery, automation systems, and precision equipment. The socket head design with hex drive allows for easy installation in confined spaces, making it ideal for applications requiring both structural integrity and maintenance accessibility. With its 140,000 psi tensile strength, this shoulder screw withstands substantial mechanical loads while maintaining dimensional stability.

Specification Summary & Compliance

This shoulder screw features precision dimensions including 3/8" thread length, 1/4" shoulder diameter with -0.004" to -0.002" tolerance, and 1 5/8" shoulder length with -0.005" to 0.005" tolerance. The 10-24 UNC thread maintains Class 3A fit for superior thread engagement and meets ASME B18.3 manufacturing specifications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial applications while maintaining high performance standards.