S-92891A100 1/4"-20 Square Nuts

Square Nuts

1059FA00001 Square Nuts
1059FA00001 Square Nuts

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

Part No.
Part No. 1059FA00001
Equivalent to mcmaster :
92891A100

Basic Information

System of Measurement Inch
Nut Type Square

Dimension Parameters

Width 7/16"
Height 3/16"

Thread Parameters

Thread Type UNC
Thread Size 1/4"-20
Thread Direction Right Hand
Thread Spacing Coarse
Thread Fit Class 2B

Head Parameters

Drive Style External Square

Material & Strength Parameters

Material 316 Stainless Steel

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (01/17/2022, 223 SVHC) Compliant
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 and extended service life.
  • Secure and reliable fastening provided by the Class 2B thread fit, ensuring consistent engagement and vibration resistance.
  • Easy installation and removal thanks to the external square drive, allowing for high-torque application with standard tools.
  • Optimized for high-strength applications with a coarse UNC 1/4"-20 thread, reducing the risk of cross-threading and enabling quick assembly.
  • Compact and robust design with 7/16" width and 3/16" height, offering a low profile without compromising on strength.
  • Compliance with global safety standards, being RoHS 3 and REACH compliant, ensuring environmental and workplace safety.
  • Versatile right-hand threading for standard industrial use, facilitating compatibility with common bolt and screw systems.

Professional Applications & Engineering Value

This 1/4"-20 UNC Square Nut in 316 Stainless Steel is engineered to address critical challenges in industrial settings, such as corrosion from chemicals, moisture, and high temperatures. Its coarse thread and Class 2B fit minimize the risk of thread stripping and provide reliable performance in high-vibration environments like machinery, construction, and marine applications. The external square drive design ensures easy installation with wrenches, reducing assembly time and enhancing grip security. Ideal for use in fastening systems where durability and compliance with RoHS and REACH standards are paramount, this nut delivers long-term value by preventing fastener failure and maintenance downtime.

Specification Summary & Compliance

This square nut features precise Class 2B thread fit per UNC standards, with a thread size of 1/4"-20 and coarse spacing for robust performance. Dimensions include a width of 7/16" and height of 3/16", manufactured from 316 Stainless Steel for optimal strength. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety requirements in industrial hardware.

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