S-91185A394 1/4"-20 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
- Superior hand-tightening grip with knurled acetal plastic head that won't slip during frequent adjustments
- Exceptional corrosion resistance from 18-8 stainless steel construction for long service life in demanding environments
- Precision thread engagement with Class 3A UNC coarse threading ensures secure fastening without cross-threading
- Low-profile design provides clearance in tight spaces while maintaining easy manual operation
- Temperature resilience with operational range from 32° to 180°F for various industrial settings
- Full threading capability allows for maximum adjustability and secure positioning along entire length
- Regulatory compliance meets RoHS 3 and REACH standards for safe use in regulated industries
Professional Applications & Engineering Value
This low-profile thumb screw combines the corrosion resistance of 18-8 stainless steel with the exceptional grip properties of a knurled acetal plastic head, solving critical assembly challenges in industrial settings. The Class 3A UNC coarse threading provides superior thread engagement for vibration-resistant fastening without requiring tools, making it ideal for frequent access panels, electronic enclosures, and machinery guards. The right-hand thread direction follows standard industrial conventions for intuitive operation, while the fully threaded design ensures consistent holding power throughout the entire 3/8" length. Engineered for environments requiring repeated manual adjustments, this thumb screw eliminates the need for specialized tools while maintaining precision fit and durability in manufacturing, electronics, and maintenance applications.
Specification Summary & Compliance
This thumb screw features precision 1/4"-20 UNC coarse threads with Class 3A thread fit for superior dimensional accuracy and engagement. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory compliance for industrial use. The combination of 18-8 stainless steel construction and acetal plastic head provides optimal performance within the specified temperature range of 32° to 180°F.
