S-98001A135 1/4"-20 Weld Nuts

Weld Nuts

1091FA00006 Weld Nuts
1091FA00006 Weld Nuts

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

Part No.
Part No. 1091FA00006
Equivalent to mcmaster :
98001A135

Basic Information

System of Measurement Inch
Nut Type Weld, Flange

Thread Parameters

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

Head Parameters

Weld Nut Shape Rectangular

Material & Strength Parameters

Material Steel

Installation & Application Parameters

For Hole Diameter 5/16"

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (01/17/2022, 223 SVHC) Compliant

Geometric Parameters

Base Thickness 1/8"
Base Length 1 1/8"
Base Width 1/2"
Barrel Diameter 19/64"
Barrel Height 3/64"
Barrel Profile Low
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Enhanced welding stability with rectangular base design (1 1/8" length × 1/2" width) for superior surface contact and reduced shifting during installation
  • Optimized low-profile barrel (19/64" diameter × 3/64" height) enables flush mounting in space-constrained assemblies while maintaining structural integrity
  • Reliable coarse threading with 1/4"-20 UNC Class 2B fit ensures smooth engagement and vibration resistance in high-stress industrial environments
  • Precision hole compatibility designed for 5/16" mounting holes to streamline installation and minimize alignment issues
  • Durable steel construction provides consistent performance under thermal stress and mechanical loads common in welding applications
  • Right-hand thread orientation delivers standardized installation compatibility with common industrial equipment
  • Full regulatory compliance with RoHS 3 and REACH standards guarantees environmental safety and global market acceptance

Professional Applications & Engineering Value

This rectangular low profile steel weld nut addresses critical challenges in fabricated metal structures where space optimization and welding reliability are paramount. The low barrel profile minimizes protrusion while the extended rectangular base distributes welding stress across a wider area, preventing warping in thin-gauge materials. Engineered with UNC coarse threading and Class 2B thread fit, it maintains consistent clamping force in vibrating machinery, automotive frames, and electrical enclosures. The right-hand thread direction ensures compatibility with standard assembly processes, reducing installation time in high-volume production environments where weld nuts must withstand thermal cycling and mechanical fatigue.

Specification Summary & Compliance

Manufactured to precise dimensional standards including 19/64" barrel diameter and 1/8" base thickness with Class 2B thread tolerances per UNC specifications. Complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations regarding hazardous substances. Thread system conforms to 1/4"-20 UNC coarse thread specifications with right-hand orientation for standardized industrial applications.

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