S-91185A475 1/4"-28 x 1" 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
- Effortless manual operation with a comfortable 3/4" knurled Acetal plastic head that provides superior grip without tools
- Exceptional corrosion resistance due to 18-8 stainless steel construction, ensuring long-term reliability in various environments
- Precise, secure fastening with a 1/4"-28 UNF Class 3A fine thread for tight, vibration-resistant connections
- Low-profile design allows installation in confined spaces while maintaining easy adjustability
- Wide temperature tolerance from 32° to 180°F for stable performance across diverse operating conditions
- Full threading provides maximum engagement and consistent clamping force along the entire 1" length
- Regulatory compliance with RoHS 3 and REACH standards ensures environmental safety and global market acceptance
Professional Applications & Engineering Value
This low-profile thumb screw combines the corrosion-resistant properties of 18-8 stainless steel with the ergonomic advantages of an Acetal plastic knurled head to solve critical assembly challenges. The Class 3A UNF fine thread delivers superior holding power in precision equipment, electronic enclosures, and machinery where vibration resistance is paramount. The fully threaded design ensures uniform stress distribution, preventing loosening in high-cycle applications. Ideal for frequent adjustments in industrial controls, medical devices, and aerospace components, this thumb screw eliminates the need for tools while maintaining tight tolerances and operational reliability across its specified temperature range.
Specification Summary & Compliance
Manufactured to precise Class 3A thread fit standards with 1/4"-28 UNF fine threading and right-hand direction. Features a 3/4" diameter knurled Acetal head with low-profile configuration and 1" fully threaded length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring adherence to international safety and substance restriction requirements.
