S-90179A146 6-32 x 3/8" Thumb Screws
Thumb Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Quick manual operation with spade head design for tool-free tightening and adjustment in confined spaces
- Enhanced durability from steel construction with Rockwell B55 hardness resisting wear in frequent assembly cycles
- Reliable load distribution through integrated flange design preventing surface damage and maintaining joint integrity
- Consistent thread engagement with Class 2A UNC coarse threads ensuring smooth installation and vibration resistance
- High tensile strength rated at 40,000 psi for secure fastening in mechanical assemblies and industrial equipment
- Full threading coverage along the 3/8" length providing maximum grip depth in various material thicknesses
- Environmental compliance meeting RoHS 3 standards for safe use in regulated industries and electronic applications
Professional Applications & Engineering Value
This 6-32 UNC thumb screw solves critical access challenges in maintenance-heavy environments where tools are impractical. The steel construction with Rockwell B55 hardness maintains dimensional stability under repeated hand-tightening cycles, while the spade head shape provides positive grip even with gloved hands. Engineers specify these flanged thumb screws for instrument panels, access covers, and electronic enclosures where quick assembly/disassembly is essential. The coarse UNC threading and Class 2A thread fit prevent cross-threading during manual installation, reducing assembly errors in production lines. The fully threaded design ensures consistent clamping force across varying material thicknesses in prototyping and OEM applications.
Specification Summary & Compliance
Manufactured to UNC thread standards with Class 2A thread fit for consistent dimensional accuracy. The 6-32 thread size features coarse thread spacing and right-hand direction with complete RoHS 3 (2015/863/EU) compliance. Mechanical properties include Rockwell B55 hardness and 40,000 psi tensile strength meeting industrial fastening requirements. The 3/8" length and flanged design provide standardized installation parameters for repeatable performance.
