S-91833A145 10-24 Thumb Nuts

Thumb Nuts

1038FA00027 Thumb Nuts
1038FA00027 Thumb Nuts

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

Part No.
Part No. 1038FA00027
Equivalent to mcmaster :
91833A145

Basic Information

System of Measurement Inch
Nut Type Thumb

Dimension Parameters

Height 11/16"

Thread Parameters

Thread Type UNC
Thread Size 10-24
Threading Fully Threaded
Thread Direction Right Hand
Thread Spacing Coarse
Thread Fit Class 2B

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) (01/17/2023, 233 SVHC) Compliant

Geometric Parameters

Collar Diameter 3/8"
Collar Height 1/2"
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Enhanced manual tightening efficiency with deeply knurled round head for superior grip in high-vibration environments
  • Corrosion-resistant performance through 18-8 stainless steel construction for long-term reliability in harsh conditions
  • Quick installation compatibility with standard 10-24 UNC coarse threading that resists cross-threading
  • Secure fastening integrity maintained by Class 2B thread fit ensuring consistent engagement with mating components
  • Optimized handling comfort from ergonomic round head design with 1/2" diameter for comfortable torque application
  • Dimensional stability provided by 3/8" collar diameter and 11/16" height for precise positioning in assembly applications
  • Regulatory compliance assurance meeting both RoHS 3 and REACH standards for safe industrial usage

Professional Applications & Engineering Value

This 18-8 stainless steel thumb nut delivers exceptional value in maintenance-heavy environments where frequent adjustments are necessary. The fully threaded UNC coarse design enables rapid installation without specialized tools, significantly reducing downtime in production settings. The knurled round head provides positive grip even with oily gloves, addressing safety concerns in industrial assembly lines. Engineers specify this thumb nut for applications requiring repeated access - from machinery guards to electrical enclosures - where its corrosion-resistant properties ensure consistent performance despite exposure to moisture, chemicals, or temperature variations. The Class 2B thread fit maintains reliable engagement while allowing for necessary clearance in dynamic loading conditions.

Specification Summary & Compliance

Manufactured to precise dimensional standards with 10-24 UNC coarse threading and Class 2B thread fit tolerance. The component features a standard round head profile with 1/2" head diameter, 3/8" collar diameter, and 11/16" total height. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures adherence to international environmental and safety standards for industrial fasteners.

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