S-91830A741 1/2"-13 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 hand-tightening and loosening with a large 1 3/8" knurled round head for superior grip, even with gloves or oily hands.
- Exceptional corrosion resistance thanks to 18-8 Stainless Steel construction, ensuring long-term reliability in harsh environments.
- High mechanical strength and durability with an 80,000 psi tensile strength and Rockwell B83 hardness to withstand heavy-duty use.
- Fast and reliable installation with 1/2"-13 UNC coarse threading and a Class 2A fit for easy starting and secure fastening.
- Maximum thread engagement provided by the fully threaded 1" length, offering versatile and secure clamping across various material thicknesses.
- Secure and compliant for global markets, meeting RoHS 3 and REACH environmental regulations for safe use.
- Stable raised profile head with a collar for increased bearing surface and improved resistance to loosening under vibration.
Professional Applications & Engineering Value
This 18-8 Stainless Steel Thumb Screw is engineered to solve critical challenges in maintenance, assembly, and access panels. The knurled head provides a non-slip grip, enabling quick tool-free adjustments—a vital feature for machinery requiring frequent access or in confined spaces. Its coarse UNC thread and Class 2A fit ensure rapid alignment and robust fastening, reducing assembly time. The fully threaded 1" length offers consistent holding power, while the raised profile and collar enhance stability. Ideal for industrial equipment, electrical enclosures, and automotive applications, this screw delivers the corrosion resistance and 80,000 psi tensile strength needed for demanding, high-vibration environments.
Specification Summary & Compliance
This thumb screw adheres to UNC 1/2"-13 coarse thread standards with a Class 2A thread fit for consistent, precise engagement. The manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances. The dimensional accuracy, including the head diameter, collar dimensions, and full thread length, is maintained to industrial specifications for reliable performance.
