S-90621A048 1"-8 Locknuts

Locknuts

1197FA00006 Locknuts
1197FA00006 Locknuts

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

Part No.
Part No. 1197FA00006
Equivalent to mcmaster :
90621A048

Basic Information

System of Measurement Inch
Nut Type Locknut, Hex

Dimension Parameters

Width 1 5/8"
Height 1 11/64"

Thread Parameters

Thread Type UNC
Thread Size 1"-8
Thread Direction Right Hand
Thread Spacing Coarse
Thread Fit Class 2B

Head Parameters

Drive Style External Hex
Hex Nut Profile Extra Wide

Material & Strength Parameters

Material Steel
Strength Class Grade 8

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
Locking Type Steel Insert
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Superior vibration resistance with a precision steel insert locking mechanism that maintains clamp force in high-stress environments.
  • Exceptional torque handling thanks to the extra wide hex profile, allowing for higher tightening forces without slippage.
  • High-strength durability from Grade 8 steel construction, ensuring reliable performance under heavy loads and harsh conditions.
  • Easy installation and removal with a coarse 1"-8 UNC thread and Class 2B fit, reducing assembly time and improving efficiency.
  • Enhanced safety and compliance by meeting RoHS 3 environmental standards, making it suitable for regulated industries.
  • Wide compatibility with standard right-hand thread systems and external hex drive, facilitating use in diverse machinery setups.

Professional Applications & Engineering Value

This Grade 8 steel locknut is engineered to address common industrial challenges like loosening under vibration and dynamic loads. The steel insert locking technology provides a secure, reusable fastening solution that eliminates the need for additional lock washers, reducing maintenance downtime. Its extra wide hex profile ensures maximum grip for high-torque applications, such as in heavy machinery, construction equipment, and automotive assemblies. With a coarse UNC thread and Class 2B thread fit, it offers quick, reliable engagement in demanding environments, enhancing operational safety and longevity in sectors like manufacturing, transportation, and energy.

Specification Summary & Compliance

This locknut features precise Class 2B thread fit and adheres to UNC coarse thread standards for consistent performance. It is manufactured from high-grade steel, meeting Grade 8 strength classifications, and complies with RoHS 3 (2015/863/EU) environmental regulations, ensuring it is free from hazardous substances. Dimensions include a 1"-8 thread size, 1 5/8" width, and 1 11/64" height, designed for reliable use in industrial applications requiring strict adherence to safety and quality norms.

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