S-8077A392 10-32 ASME B18.3 Shoulder Screws
Shoulder Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 316 stainless steel construction and black oxide finish, ideal for harsh industrial environments
- Precise component alignment ensured by the 1/4" shoulder with tight diameter and length tolerances for reliable assembly
- High-strength performance delivering 70,000 psi tensile strength and 35,000 psi minimum shear strength for demanding applications
- Secure, vibration-resistant fastening with Class 3A thread fit and fine 10-32 UNF threads for superior holding power
- Easy installation and removal featuring a knurled socket head with 1/8" hex drive for non-slip tool engagement
- Long-term durability supported by Rockwell B79 hardness and compliance with ASME B18.3 manufacturing standards
- Environmental and regulatory safety with full RoHS 3 and REACH compliance for global supply chain integration
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address critical alignment and corrosion challenges in precision assemblies. The 1/4" shoulder length provides an exact unthreaded bearing surface, eliminating misalignment in machinery, pivots, and rotating components. Its black oxide finish enhances surface durability and resists oxidation in humid or chemical-exposed settings, while the 10-32 UNF fine thread with Class 3A fit ensures tight, secure connections that withstand vibration and dynamic loads. Ideal for use in aerospace, automotive, and electronic enclosures, this screw offers reliable performance where dimensional accuracy and material integrity are non-negotiable.
Specification Summary & Compliance
This shoulder screw adheres to ASME B18.3 specifications, with a Class 3A thread fit for precision engagement. The shoulder diameter (1/4") and length (1/4") maintain tight tolerances, supporting consistent assembly. It is manufactured from 316 stainless steel with a black oxide finish, and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards.
