S-91831A029 1/4"-20 Locknuts
Locknuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Temperature & Environment Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance through the nylon insert, ensuring reliable performance in high-motion applications
- Excellent corrosion resistance with 18-8 stainless steel construction, ideal for harsh or outdoor environments
- Easy installation and removal using standard tools thanks to the external hex drive design
- High-temperature durability with the nylon insert rated up to 220°F, maintaining locking integrity under thermal stress
- Precise thread engagement with UNC coarse threads and Class 2B fit, reducing cross-threading risks
- Compliance with environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries
- Standardized dimensions (7/16" width, 5/16" height) for compatibility with common industrial components
Professional Applications & Engineering Value
This 1/4"-20 nylon insert lock nut is engineered to address critical challenges in industrial settings where vibration loosening and corrosion compromise assembly integrity. The 18-8 stainless steel material provides inherent resistance to rust and chemical exposure, making it suitable for automotive, machinery, and marine applications. The nylon insert creates consistent friction against the mating bolt, effectively damping vibrations without damaging threads. With UNC coarse threads and Class 2B fit, it ensures quick assembly and reliable performance in high-stress environments, reducing maintenance needs and downtime. Its external hex drive allows for efficient torque application using common wrenches, streamlining installation in confined spaces.
Specification Summary & Compliance
This lock nut features a 1/4"-20 UNC coarse thread with Class 2B fit for standard tolerance and secure fastening. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of hazardous substances. The nut is manufactured to precise dimensional standards, including a 7/16" width and 5/16" height, and is designed for use in temperatures up to 220°F without compromising the nylon insert's locking capability.
