S-92994A029 1/4"-20 Cap Nuts

Cap Nuts

0998FA00004 Cap Nuts
0998FA00004 Cap Nuts

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

Part No.
Part No. 0998FA00004
Equivalent to mcmaster :
92994A029

Basic Information

System of Measurement Inch
Nut Type Cap, 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 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
In Stock
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Key Features & Benefits at a Glance

  • Exceptional corrosion resistance with 316 stainless steel construction, ideal for harsh industrial and marine environments
  • Reliable thread engagement ensured by Class 2B thread fit, reducing cross-threading risks and improving assembly efficiency
  • Superior sealing and protection from the cap design, preventing contamination and enhancing component longevity
  • Easy installation and removal with external hex drive, compatible with standard tools for quick maintenance
  • Durable performance in coarse-thread applications using 1/4"-20 UNC threads, providing strong holding power in various materials
  • Compliance with strict environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries
  • Precise dimensional accuracy with 7/16" width and 15/32" height, enabling consistent fit in assembly lines

Professional Applications & Engineering Value

This 316 stainless steel cap nut delivers critical advantages in demanding settings where corrosion resistance and reliability are paramount. Its UNC coarse threads and Class 2B fit minimize galling and seizing during installation, a common issue in stainless fasteners, while the external hex drive allows for high-torque applications without stripping. The nut’s design effectively seals threaded ends against moisture, dust, and chemicals, protecting components in industrial machinery, chemical processing equipment, and outdoor structures. By combining durable material properties with precise manufacturing, it addresses failure risks in corrosive or high-vibration environments, extending service life and reducing maintenance costs for B2B clients.

Specification Summary & Compliance

This cap nut adheres to UNC thread standards with a Class 2B thread fit for consistent dimensional accuracy. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free of restricted hazardous substances. Manufactured to inch system specifications, it features a 1/4"-20 coarse thread, 7/16" width, and 15/32" height for reliable performance in industrial assemblies.

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