S-91185A479 1/4"-28 x 1 1/4" 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
- Enhanced grip and comfort with knurled acetal plastic head for secure manual operation without tools
- Superior corrosion resistance from 18-8 stainless steel construction for long-lasting performance in demanding environments
- Precise thread engagement with Class 3A fit and UNF fine threads ensuring reliable fastening in critical applications
- Space-saving low-profile design allowing installation in tight spaces where standard thumb screws won't fit
- Temperature resilience with operational range from 32° to 180°F for stable performance across various conditions
- Full threading capability providing maximum thread contact and superior holding power along the entire length
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries
Professional Applications & Engineering Value
This low-profile thumb screw combines the corrosion-resistant properties of 18-8 stainless steel with the exceptional grip characteristics of a knurled acetal plastic head, addressing common industrial challenges where tool-less adjustments are required. The Class 3A thread fit with UNF fine threading ensures precise alignment and vibration resistance in precision equipment, electronic enclosures, and instrumentation panels. The right-hand thread direction and fully threaded design provide consistent engagement depth, while the plastic head eliminates galvanic corrosion concerns when mating with dissimilar metals. Ideal for applications requiring frequent adjustments in industrial settings, this thumb screw maintains reliability across temperature variations from freezing to moderate heat conditions.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 3A thread fit and UNF 1/4"-28 fine thread specifications. Features a 3/4" diameter knurled acetal plastic head with low-profile configuration and fully threaded 1-1/4" length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring adherence to international standards for hazardous substance restrictions.
