S-91185A467 1/4"-28 x 3/4" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced grip and comfort with knurled acetal plastic head for secure manual tightening without tools
• Superior corrosion resistance from 18-8 stainless steel construction, ideal for demanding industrial environments
• Precise thread engagement with Class 3A fine threading ensuring reliable, vibration-resistant fastening
• Space-saving low-profile design allowing installation in tight clearance applications
• Wide temperature tolerance (32° to 180°F) for consistent performance across various operating conditions
• Full threading providing maximum adjustability and holding power along the entire screw length
• Regulatory compliance meeting RoHS 3 and REACH standards for safe, environmentally conscious manufacturing

Professional Applications & Engineering Value

This low-profile thumb screw combines the corrosion-resistant properties of 18-8 stainless steel with the exceptional durability and grip of an acetal plastic head, creating an ideal solution for frequent-adjustment applications in electronics, machinery, and instrumentation. The Class 3A fine threading (1/4"-28 UNF) delivers precise alignment and vibration resistance in right-hand thread assemblies, while the fully threaded design ensures maximum engagement in threaded inserts and mounting plates. The knurled head texture provides positive tactile feedback for operators, reducing installation time and eliminating the need for specialized tools in maintenance-heavy environments where quick access is critical.

Specification Summary & Compliance

Manufactured to precise Class 3A thread fit standards with 1/4"-28 UNF fine threading and right-hand thread direction. Features a 3/4" length with fully threaded construction and low-profile round head design (3/4" diameter, 5/16" height). Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring restricted substance compliance for global industrial applications.