S-91833A116 6-32 Thumb Nuts

Thumb Nuts

1038FA00014 Thumb Nuts
1038FA00014 Thumb Nuts

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

Part No.
Part No. 1038FA00014
Equivalent to mcmaster :
91833A116

Basic Information

System of Measurement Inch
Nut Type Thumb

Dimension Parameters

Height 3/8"

Thread Parameters

Thread Type UNC
Thread Size 6-32
Threading Partially Threaded
Thread Direction Right Hand
Thread Spacing Coarse
Thread Fit Class 2B
Thread Depth 9/32"

Head Parameters

Thumb Nut Head Shape Round
Thumb Nut Profile Standard
Head Diameter 1/2"
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 1/4"
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

  • Easy manual installation with knurled head texture for superior grip without tools
  • Corrosion-resistant performance thanks to durable 18-8 stainless steel construction
  • Quick assembly alignment enabled by partially threaded design and right-hand thread direction
  • Reliable thread engagement ensured by 6-32 UNC coarse threading with Class 2B fit
  • Consistent dimensional accuracy with standard 1/4" collar diameter and round profile
  • Safe for regulated industries with full compliance to REACH and RoHS 3 standards
  • Optimized space utilization through compact 3/8" height and 1/2" head diameter

Professional Applications & Engineering Value

This 18-8 stainless steel thumb nut delivers exceptional value in industrial settings where frequent adjustments and corrosion resistance are critical. The knurled round head provides secure manual tightening in confined spaces, eliminating tool dependency while the 6-32 UNC coarse threading ensures rapid installation with reduced cross-threading risks. The partially threaded design allows for smoother engagement on bolts, making it ideal for assembly lines, machinery panels, and electronic enclosures requiring repeated access. Manufactured from premium stainless steel, it maintains integrity in humid, chemical, or outdoor environments where ordinary fasteners would degrade, significantly extending maintenance intervals across automotive, manufacturing, and electrical applications.

Specification Summary & Compliance

This thumb nut features Class 2B thread fit with 6-32 UNC coarse threading in right-hand direction, ensuring precise compatibility with standard inch-system components. Dimensions include 1/4" collar diameter, 1/2" head diameter, and 3/8" total height with 9/32" thread depth. The product fully complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) regulations, meeting stringent international standards for hazardous substance restrictions in industrial applications.

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