S-90762A139 1/2"-20 Fed. Spec. FF-N-836, MS51972-5, Fed. Spec. QQ-P-35 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction for long-lasting performance in harsh environments
• Precise Class 2B thread fit ensures smooth engagement and reliable fastening with mating components
• Fine pitch UNF threading (1/2"-20) provides enhanced vibration resistance and superior load distribution
• Standard external hex drive design enables easy installation with common wrenching tools
• Full compliance with Fed. Spec. FF-N-836 and MS51972-5 guarantees consistent quality and dimensional accuracy
• RoHS 3 and REACH compliant meeting current environmental regulations for industrial applications
• Durable 3/4" width and 7/16" height offers optimal strength-to-size ratio for space-constrained assemblies

Professional Applications & Engineering Value

This 1/2"-20 UNF hex nut delivers exceptional engineering value through its 18-8 Stainless Steel composition and Class 2B thread fit, specifically designed to address critical industrial fastening challenges. The fine pitch thread configuration provides superior resistance to vibration loosening in high-stress applications, while the corrosion-resistant properties ensure long-term reliability in demanding environments including marine, chemical processing, and outdoor equipment. The standard external hex drive facilitates quick installation and maintenance operations, making it ideal for assembly lines and field service applications where time efficiency is crucial. Meeting Fed. Spec. FF-N-836 and MS51972-5 standards, this hex nut guarantees dimensional consistency and interchangeability across military, aerospace, and precision manufacturing applications requiring right-hand thread fasteners with proven performance credentials.

Specification Summary & Compliance

This precision hex nut features 1/2"-20 UNF fine pitch threads with Class 2B thread fit tolerance, ensuring optimal engagement with mating components. The nut complies with Fed. Spec. FF-N-836 and MS51972-5 manufacturing specifications, guaranteeing consistent dimensional accuracy and mechanical properties. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to current substance restriction requirements. Additional material certification includes conformity with Fed. Spec. QQ-P-35 for stainless steel composition verification.