S-94909A005 4-40 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through thread forming locking technology that prevents loosening under dynamic loads
• Excellent chemical and corrosion resistance provided by durable Nylon 6/6 material for long service life
• Integrated flange design eliminates need for separate washers and distributes load over wider surface area
• Wide temperature tolerance from -40° to 185° F maintains performance in diverse operating environments
• Lightweight non-conductive properties ideal for electrical applications where metal fasteners are unsuitable
• Standard UNC coarse threading ensures compatibility with common industrial components and faster assembly
• RoHS 3 compliance meets environmental regulations for global manufacturing applications

Professional Applications & Engineering Value

This Nylon 6/6 plastic flange locknut combines the reliability of thread forming locking technology with the practical benefits of an integrated flange. The 4-40 UNC coarse thread configuration provides excellent engagement with mating components while the nylon construction offers inherent resistance to corrosion, chemicals, and electrical conductivity. Engineers specify these flange locknuts for applications requiring vibration resistance without the weight and galvanic corrosion concerns of metal fasteners. The 9/32" flange diameter creates a stable bearing surface that prevents damage to softer materials, making them ideal for electrical enclosures, automotive assemblies, and industrial equipment where reliable, maintenance-free fastening is critical.

Specification Summary & Compliance

This flange locknut features 4-40 UNC coarse threads with standard Class 2A tolerance for consistent mating performance. Dimensions include 1/4" width across flats, 3/16" height, and 9/32" flange diameter with external hex drive configuration. Manufactured from Nylon 6/6 plastic with right-hand thread direction, the component operates effectively within -40° to 185° F temperature range. The product is fully RoHS 3 (2015/863/EU) compliant and meets industry standards for thread forming locknuts in industrial applications.