S-90507A230 1/4"-20 Cap Nuts

Cap Nuts

1016FA00008 Cap Nuts
1016FA00008 Cap Nuts

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

Part No.
Part No. 1016FA00008
Equivalent to mcmaster :
90507A230

Basic Information

System of Measurement Inch
Nut Type Cap, Locknut, Hex

Dimension Parameters

Width 7/16"
Height 15/32"

Thread Parameters

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

Head Parameters

Drive Style External Hex
Cap Nut Profile Standard

Material & Strength Parameters

Material 18-8 Stainless Steel

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (01/17/2022, 223 SVHC) Compliant
Locking Type Distorted Thread
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 through distorted thread locking technology that maintains secure fastening in high-motion environments
  • Excellent corrosion protection with 18-8 stainless steel construction for extended service life in harsh conditions
  • Precise Class 2B thread fit ensures smooth installation and reliable engagement with mating components
  • Easy installation and removal with external hex drive design compatible with standard wrench tools
  • Complete thread coverage with 1/4" thread depth providing maximum engagement strength
  • Environmental compliance assurance meeting both RoHS 3 and REACH standards for global manufacturing applications
  • Durable coarse thread design with UNC 1/4"-20 configuration resistant to cross-threading and damage

Professional Applications & Engineering Value

This 18-8 stainless steel cap locknut combines distorted thread locking technology with corrosion-resistant properties to solve critical industrial fastening challenges. The UNC coarse thread configuration provides excellent resistance to vibration loosening in machinery, automotive, and structural applications where constant motion threatens joint integrity. The external hex drive enables quick installation with standard tools while maintaining a clean, finished appearance with its capped design. Engineered for demanding environments, this fastener prevents corrosion-induced failure in chemical processing, marine, and outdoor equipment applications. The combination of locking functionality and environmental protection makes it ideal for permanent installations where maintenance access is limited and reliability is paramount.

Specification Summary & Compliance

This 1/4"-20 UNC coarse thread cap locknut features Class 2B thread fit precision with standard external hex drive configuration. The fastener meets RoHS 3 (2015/863/EU) compliance standards and REACH (EC 1907/2006) regulations for hazardous substances. Manufacturing specifications include right-hand thread direction, 7/16" width, and 15/32" height dimensions, ensuring compatibility with standard industrial requirements and mating components.

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