S-90860A115 5/16"-18 Weld Nuts

Weld Nuts

1100FA00009 Weld Nuts
1100FA00009 Weld Nuts

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

Part No.
Part No. 1100FA00009
Equivalent to mcmaster :
90860A115

Basic Information

System of Measurement Inch
Nut Type Weld, Flange

Thread Parameters

Thread Type UNC
Thread Size 5/16"-18
Thread Direction Right Hand
Thread Spacing Coarse
Thread Fit Class 2B

Head Parameters

Weld Nut Shape Round

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

Geometric Parameters

Base Diameter 7/8"
Base Thickness 1/16"
Barrel Diameter 0.391"
Barrel Height 1/2"
Barrel Profile Standard
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 18-8 stainless steel construction, ideal for harsh industrial environments
  • Reliable welding performance thanks to the round flange design and standard barrel profile for secure attachment
  • Easy installation and removal with coarse UNC threads and Class 2B thread fit, reducing assembly time
  • Enhanced durability from the 1/16" base thickness and 7/8" base diameter, providing stable load distribution
  • Right-hand thread compatibility for standard applications, ensuring broad usability across equipment
  • Compliance with environmental standards including RoHS 3 and REACH, meeting strict regulatory requirements
  • Precise dimensional accuracy with 0.391" barrel diameter and 1/2" height for consistent fit in welded assemblies

Professional Applications & Engineering Value

This 5/16"-18 UNC weld nut is engineered to address common challenges in industrial settings, such as vibration loosening and corrosion-induced failures. Made from 18-8 stainless steel, it offers excellent resistance to rust and chemicals, extending service life in demanding applications like machinery, automotive frames, and structural fabrications. The round flange and standard barrel profile ensure a strong, consistent weld, minimizing the risk of detachment under stress. With coarse threads and Class 2B fit, it facilitates quick assembly while maintaining thread integrity, reducing downtime in production lines. Ideal for heavy-duty welding tasks, this nut provides reliable performance where strength and environmental compliance are critical.

Specification Summary & Compliance

This weld nut adheres to UNC thread standards with a Class 2B thread fit for precise engagement and tolerance. Key dimensions include a barrel diameter of 0.391", barrel height of 1/2", base diameter of 7/8", and base thickness of 1/16". It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for global industrial use.

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