S-91745A550 1/4"-20 x 2" 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
- Tool-free installation and removal with the comfortable spade head design for quick manual adjustments
- Superior corrosion resistance from 18-8 stainless steel construction for long-lasting performance in harsh environments
- Easy hand-tightening capability with the generous 23/32" wide spade head providing excellent grip
- Reliable coarse threading with UNC 1/4"-20 pattern ensuring fast engagement and reduced cross-threading risk
- Consistent thread quality with Class 2A fit maintaining proper clearances for smooth assembly
- Full 2-inch threading offering maximum engagement depth for secure fastening across various material thicknesses
- Environmental compliance assurance meeting RoHS 3 and REACH standards for safe industrial use
Professional Applications & Engineering Value
This 18-8 stainless steel thumb screw delivers exceptional value in applications requiring frequent access or tool-free operation. The corrosion-resistant material ensures reliable performance in demanding environments where moisture or chemicals are present, while the spade head design with 23/32" width provides comfortable, secure grip for manual tightening without specialized tools. The 1/4"-20 UNC coarse threads enable rapid installation and removal, making these thumb screws ideal for access panels, electronic enclosures, machinery guards, and maintenance hatches where quick disassembly is essential. The fully threaded 2-inch length accommodates various material thicknesses while maintaining consistent holding power throughout the engagement area.
Specification Summary & Compliance
This thumb screw features precise Class 2A thread fit with UNC 1/4"-20 coarse threading and right-hand thread direction. Manufactured from 18-8 stainless steel with a spade head measuring 1/2" in height and 23/32" in width. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial applications.
