S-92220A171 10-32 x 1/4" ASTM A574 Alloy Steel Low-Profile Socket Head Screws

Key Features & Benefits at a Glance

• Enhanced Corrosion Resistance with black-oxide coating, ideal for demanding industrial environments.
• Superior Thread Precision with Class 3A fit for reliable, vibration-resistant assemblies and reduced risk of cross-threading.
• High Tensile Strength of 140,000 psi ensures durability under extreme mechanical loads.
• Low Profile Head Design allows installation in tight spaces without compromising on drive engagement.
• Consistent Hardness at Rockwell C39 provides excellent wear resistance and long service life.
• Fine Thread Spacing (UNF) offers improved adjustment accuracy and superior clamping force distribution.
• Compact Hex Drive (3/32") enables secure tool engagement while minimizing head protrusion.

Professional Applications & Engineering Value

This low profile socket head cap screw is engineered with black-oxide alloy steel to address critical challenges in precision assemblies, such as limited clearance and exposure to corrosive elements. The Class 3A UNF fine thread ensures tight tolerances, reducing the likelihood of loosening under vibration in machinery, automotive, and aerospace applications. Its fully threaded design allows for uniform stress distribution, while the high tensile strength supports heavy-duty fastening without failure. The low socket head profile is particularly valuable in compact electronic enclosures or hydraulic systems where space optimization is essential, delivering reliable performance without sacrificing structural integrity.

Specification Summary & Compliance

This fastener meets ASTM A574 specifications for high-strength socket head cap screws, with precise Class 3A thread fit and UNF fine thread spacing. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability in global supply chains.