S-91185A297 8-32 x 5/8" Thumb Screws

Thumb Screws

0773FA00017 Thumb Screws
0773FA00017 Thumb Screws

Image may differ from product. See technical specification for details.

Part No.
Part No. 0773FA00017
Equivalent to mcmaster :
91185A297

Basic Information

System of Measurement Inch

Head Parameters

Head Type Thumb
Thumb Screw Head Shape Round
Round-Head Thumb Screw Profile Low
Head Diameter 1/2"
Head Height 7/32"
Head Texture Knurled
Head Material Acetal Plastic
Head Temperature Range 32° to 180° F

Dimensions

Length 5/8"

Thread Parameters

Thread Type UNC
Thread Size 8-32
Thread Diameter 0.164"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 3A
Threading Fully Threaded

Material & Strength

Material 18-8 Stainless Steel
Hardness Not Rated

Temperature & Environment

REACH Compliant
RoHS Compliant
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Effortless hand-tightening with a knurled acetal plastic head for superior grip without tools in frequent adjustment applications
  • Exceptional corrosion resistance provided by 18-8 Stainless Steel construction, ensuring long-term reliability in various environments
  • Precise and secure fastening with a Class 3A thread fit and UNC coarse thread, minimizing cross-threading and ensuring consistent performance
  • Broad thermal compatibility with a head temperature range of 32° to 180° F, suitable for many indoor and controlled industrial settings
  • Maximum thread engagement from the fully threaded design, offering enhanced holding power along the entire 5/8" length
  • Low-profile, round head design reduces snagging risks and provides a streamlined appearance for finished assemblies
  • Safe for regulated industries with full compliance to RoHS 3 and REACH, meeting stringent environmental and safety standards

Professional Applications & Engineering Value

This 8-32 UNC thumb screw is engineered to solve common assembly challenges where tool-less access and frequent adjustments are required. The 18-8 stainless steel body resists rust and corrosion, making it ideal for electronics enclosures, machinery panels, and laboratory equipment that demand durability. The knurled acetal plastic head ensures a firm grip even with oily fingers, enhancing operator efficiency and safety. Its right-hand coarse thread and Class 3A thread fit provide quick installation with high resistance to vibration loosening. This combination of low-profile round head and robust materials delivers reliable performance in prototyping, maintenance, and OEM applications where precision and compliance are critical.

Specification Summary & Compliance

This thumb screw adheres to UNC thread standards with a Class 3A thread fit for precise dimensional accuracy. It is fully threaded with a coarse thread spacing and measures 5/8" in length. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of hazardous substances and suitable for global industrial use.

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