S-92533A106 1/4"-20 Thumb Nuts

Thumb Nuts

1040FA00006 Thumb Nuts
1040FA00006 Thumb Nuts

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

Part No.
Part No. 1040FA00006
Equivalent to mcmaster :
92533A106

Basic Information

System of Measurement Inch
Nut Type Thumb

Dimension Parameters

Height 1/2"

Thread Parameters

Thread Type UNC
Thread Size 1/4"-20
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 3/4"
Head Texture Knurled

Material & Strength Parameters

Material 316 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 1/2"
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 316 stainless steel construction, ideal for harsh environments like marine or chemical processing
  • Effortless hand-tightening thanks to the knurled round head design, eliminating the need for tools in quick assembly applications
  • Reliable coarse threading with UNC 1/4"-20 and Class 2B fit, ensuring smooth engagement and vibration resistance
  • Durable, fully threaded body for maximum grip and load distribution across the entire nut height
  • Wide 3/4" head diameter provides ample surface area for secure manual tightening and loosening
  • Compliance with industry standards including RoHS 3 and REACH, ensuring safety and environmental responsibility
  • Right-hand thread direction for standard installation, compatible with common industrial components

Professional Applications & Engineering Value

This 316 stainless steel thumb nut is engineered to address common industrial challenges such as corrosion-induced failure and time-consuming installations. The fully threaded UNC coarse thread design ensures rapid assembly and disassembly in maintenance-heavy sectors like marine equipment, food processing machinery, and outdoor structures. The knurled round head offers a non-slip grip even with greasy hands or gloves, enhancing worker safety and efficiency. Made from high-grade 316 stainless steel, it withstands exposure to saltwater, chemicals, and extreme temperatures, reducing replacement frequency and downtime in demanding industrial thumb nut applications.

Specification Summary & Compliance

This thumb nut adheres to UNC 1/4"-20 coarse thread standards with a Class 2B thread fit for consistent dimensional accuracy and compatibility. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances. Manufacturing follows standard inch system specifications, with a collar diameter of 1/2" and height of 1/2", providing reliable performance in various assembly environments.

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