S-91833A132 10-32 Thumb Nuts

Thumb Nuts

1038FA00021 Thumb Nuts
1038FA00021 Thumb Nuts

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

Part No.
Part No. 1038FA00021
Equivalent to mcmaster :
91833A132

Basic Information

System of Measurement Inch
Nut Type Thumb

Dimension Parameters

Height 7/16"

Thread Parameters

Thread Type UNF
Thread Size 10-32
Threading Fully Threaded
Thread Direction Right Hand
Thread Spacing Fine
Thread Fit Class 2B

Head Parameters

Thumb Nut Head Shape Round
Thumb Nut Profile Standard
Head Diameter 1"
Head Texture Knurled

Material & Strength Parameters

Material 18-8 Stainless Steel

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (07/08/2021, 219 SVHC) Compliant

Geometric Parameters

Collar Diameter 3/8"
Collar Height 1/4"
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh industrial environments
  • Excellent grip and tool-free operation thanks to the knurled round head design, enabling quick manual adjustments
  • Precise thread engagement with 10-32 UNF fine threading and Class 2B fit for secure, vibration-resistant fastening
  • Full threading and right-hand direction provide consistent installation and reliable load distribution
  • Durable industrial-grade build ensures repeated use without degradation, reducing replacement frequency
  • Compliance with RoHS 3 and REACH standards guarantees environmental safety and regulatory acceptance
  • Convenient 1" head diameter offers ample surface area for comfortable hand-tightening in tight spaces

Professional Applications & Engineering Value

This 18-8 stainless steel thumb nut delivers exceptional corrosion resistance and mechanical strength, making it ideal for applications in electrical enclosures, machinery panels, and assembly jigs where frequent adjustments are needed. The fully threaded design and UNF fine thread (10-32) ensure precise alignment and clamping force, reducing the risk of loosening under dynamic loads. The knurled round head enhances grip even with oily hands or gloves, speeding up maintenance cycles. Engineered for industrial durability, it solves common pain points like galvanic corrosion and thread stripping, while its REACH and RoHS 3 compliance supports sustainable manufacturing practices.

Specification Summary & Compliance

This thumb nut adheres to UNF thread standards with a Class 2B thread fit for consistent dimensional accuracy. Key specifications include a 1" head diameter, 3/8" collar diameter, and 7/16" height. It is manufactured from 18-8 stainless steel and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety requirements for industrial components.

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