S-92994A005 4-40 Cap Nuts

Cap Nuts

0998FA00001 Cap Nuts
0998FA00001 Cap Nuts

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

Part No.
Part No. 0998FA00001
Equivalent to mcmaster :
92994A005

Basic Information

System of Measurement Inch
Nut Type Cap, Hex

Dimension Parameters

Width 1/4"
Height 1/4"

Thread Parameters

Thread Type UNC
Thread Size 4-40
Thread Direction Right Hand
Thread Spacing Coarse
Thread Fit Class 2B
Thread Depth 5/32"

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

  • Superior corrosion resistance with 316 stainless steel construction, ideal for harsh marine and chemical environments
  • Reliable thread engagement due to Class 2B fit, ensuring consistent fastening and reduced risk of cross-threading
  • Easy installation and removal with external hex drive design, compatible with standard wrenches
  • Durable sealing and protection from the cap nut profile, safeguarding threads from damage and contaminants
  • Wide compatibility with 4-40 UNC coarse threads, suitable for various industrial assemblies
  • Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe use in regulated industries
  • Compact 1/4" size offering space-saving benefits without compromising strength

Professional Applications & Engineering Value

This 316 stainless steel cap nut is engineered to address common industrial challenges such as corrosion, vibration loosening, and contamination in demanding settings. The UNC coarse threads and Class 2B fit provide excellent thread engagement and resistance to stripping, making it ideal for applications in marine equipment, chemical processing plants, and high-moisture environments where durability is critical. Its external hex drive allows for quick installation with standard tools, reducing assembly time and labor costs. By combining robust material properties with precise manufacturing, this cap nut ensures long-term performance and reliability in industrial fastening systems, minimizing maintenance needs and downtime.

Specification Summary & Compliance

This cap nut features a 4-40 UNC coarse thread with Class 2B fit for precise dimensional accuracy, adhering to standard thread specifications. It is manufactured from 316 stainless steel with dimensions of 1/4" width and 1/4" height, ensuring consistent performance. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial applications without hazardous substances.

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