S-94407A116 1/4"-28 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking mechanism that maintains secure fastening under dynamic loads
• Excellent corrosion protection with Black-Oxide coated 18-8 Stainless Steel construction for harsh industrial environments
• Reliable high-temperature performance with nylon insert rated for continuous operation up to 220°F
• Precise thread engagement with Class 2B thread fit ensuring consistent torque values and reduced galling
• Enhanced installation efficiency with standard 7/16" hex profile allowing for quick assembly using common tools
• Optimal fine-thread performance with 1/4"-28 UNF threads providing superior clamping force in thinner materials
• Compliance assurance meeting RoHS 3 and REACH environmental standards for global industrial applications

Professional Applications & Engineering Value

This nylon insert locknut delivers exceptional engineering value in applications where vibration resistance and corrosion protection are critical. The Black-Oxide 18-8 Stainless Steel construction provides superior durability in demanding environments while the nylon insert creates consistent locking force without damaging mating threads. The 1/4"-28 UNF fine threads offer enhanced load distribution, making these locknuts ideal for precision equipment, automotive assemblies, and industrial machinery where fine-thread fastening solutions prevent loosening under continuous vibration. The external hex drive design ensures reliable torque application during installation and maintenance procedures.

Specification Summary & Compliance

This locknut features Class 2B thread fit per UNF standards, ensuring precise dimensional accuracy and reliable thread engagement. The 1/4"-28 UNF fine thread specification provides optimal performance in applications requiring fine-pitch fastening. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming the absence of restricted substances. The standard 7/16" hex width and 5/16" height dimensions ensure compatibility with industry-standard tools and applications requiring reliable locking performance.