S-8077A384 10-32 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life
• Precise alignment and smooth rotation ensured by the accurately machined shoulder with tight diameter and length tolerances
• High-strength performance with 70,000 psi tensile strength and 35,000 psi minimum shear strength for demanding applications
• Excellent thread engagement and reliability provided by the 10-32 UNF fine thread with a Class 3A fit for superior fastening
• Enhanced durability and wear resistance from the black oxide finish and Rockwell B79 hardness
• Secure and easy installation with a hex socket drive and knurled head for improved grip and torque application
• Broad regulatory compliance meeting ASME B18.3, RoHS 3, and REACH standards for quality and environmental safety

Professional Applications & Engineering Value

This 316 Stainless Steel Shoulder Screw is engineered to address critical challenges in precision assembly and rotating machinery. The black oxide finish enhances corrosion resistance, making it suitable for applications exposed to moisture and chemicals. Its 10-32 UNF fine thread and Class 3A fit ensure secure, vibration-resistant fastening in components like bearings, linkages, and pivots. The precisely toleranced shoulder provides consistent alignment, reducing wear and maintenance in industrial equipment. With high tensile and shear strength, it supports heavy-duty operations in automotive, aerospace, and manufacturing sectors, delivering reliable performance where dimensional accuracy and material integrity are paramount.

Specification Summary & Compliance

This shoulder screw features a 10-32 UNF thread with Class 3A fit for precise thread engagement. Shoulder dimensions include a diameter of 1/4" (tolerance: -0.004" to -0.002") and length of 2 3/4" (tolerance: -0.005" to 0.005"), ensuring accurate assembly. Manufactured to ASME B18.3 specifications, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, guaranteeing environmental and safety adherence for industrial use.