S-90630A207 1 1/2"-12 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking technology that maintains secure fastening in high-stress environments
• Exceptional strength and durability with Grade 8 steel construction for heavy-duty industrial applications
• Reliable high-temperature performance with nylon insert rated up to 220°F for demanding thermal conditions
• Precision thread engagement with UNF fine threads and Class 2B fit ensuring consistent, accurate installation
• Easy installation and removal with standard external hex drive design compatible with common tools
• Environmental compliance assurance meeting both REACH and RoHS 3 standards for safe industrial use
• Right-hand thread design providing standard directional fastening for conventional assembly processes

Professional Applications & Engineering Value

This Grade 8 steel locknut with nylon insert locking technology delivers critical vibration resistance in demanding industrial environments where fastener loosening can compromise safety and performance. The UNF fine threads provide superior thread engagement and load distribution compared to coarse threads, making this external hex locknut ideal for precision machinery, heavy equipment, and automotive applications. The nylon insert creates consistent friction that maintains clamping force even under extreme vibration, while the 220°F temperature rating ensures reliability in thermally challenging conditions. Engineered with Class 2B thread fit, this heavy-duty fastener offers precise dimensional accuracy for seamless integration into existing assembly systems, reducing installation time and improving overall structural integrity.

Specification Summary & Compliance

This 1 1/2"-12 UNF locknut features precision Class 2B thread fit with right-hand thread direction and fine thread spacing. The external hex drive measures 2 13/64" across flats with a height of 1 39/64". Manufactured from Grade 8 steel with nylon insert locking mechanism, the product fully complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental standards, ensuring safe usage across various industrial sectors while meeting rigorous quality and performance requirements.