S-92088A127 3/8"-16 Thumb Nuts

Thumb Nuts

1038FA00047 Thumb Nuts
1038FA00047 Thumb Nuts

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

Part No.
Part No. 1038FA00047
Equivalent to mcmaster :
92088A127

Basic Information

System of Measurement Inch
Nut Type Thumb

Dimension Parameters

Height 3/4"

Thread Parameters

Thread Type UNC
Thread Size 3/8"-16
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"
Head Texture Knurled

Material & Strength Parameters

Material Black-Oxide 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 5/8"
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 grip with knurled round head design for secure tightening without tools in tight spaces
  • Superior corrosion resistance from 18-8 stainless steel with black oxide finish, ideal for humid or chemical environments
  • Reliable coarse threading with UNC 3/8"-16 pattern ensures quick assembly and reduced cross-threading risks
  • Precision thread fit with Class 2B tolerance for consistent engagement and vibration resistance in dynamic applications
  • Robust structural integrity from full threading and 5/8" collar diameter, distributing load evenly for heavy-duty use
  • Compliance assurance with REACH and RoHS 3 standards, meeting strict industrial safety and environmental regulations
  • Optimized dimensions (3/4" height, 1/2" collar height) for versatile integration into machinery and equipment assemblies

Professional Applications & Engineering Value

Engineered for industrial applications requiring frequent adjustments and high durability, this thumb nut combines 18-8 stainless steel with a black oxide surface treatment to resist rust and wear in harsh conditions. The knurled round head provides exceptional tactile grip, enabling quick hand-tightening in confined areas like assembly lines or maintenance panels. Its fully threaded UNC coarse design and Class 2B thread fit ensure secure fastening with minimal effort, reducing installation time and preventing loosening under vibration. Ideal for machinery, automotive, and electronic enclosures, it addresses common pain points such as tool accessibility and long-term reliability, while the compliant REACH and RoHS 3 status supports sustainable manufacturing practices.

Specification Summary & Compliance

This thumb nut adheres to UNC 3/8"-16 coarse thread standards with a Class 2B thread fit for precise dimensional accuracy. Manufactured from black oxide 18-8 stainless steel, it meets REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) compliance, ensuring environmental and safety standards. Key specifications include a 5/8" collar diameter, 3/4" height, and fully threaded right-hand design for consistent performance in industrial settings.

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