S-94758A675 3/4"-16 Flange Nuts

Flange Nuts

1238FA00021 Flange Nuts
1238FA00021 Flange Nuts

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

Part No.
Part No. 1238FA00021
Equivalent to mcmaster :
94758A675

Basic Information

System of Measurement Inch
Nut Type Flange, Hex

Dimension Parameters

Width 1 1/4"
Height 1"

Thread Parameters

Thread Type UNF
Thread Size 3/4"-16
Thread Direction Right Hand
Thread Spacing Fine
Thread Fit Class 2B

Head Parameters

Drive Style External Hex
Hex Nut Profile Standard

Flange Parameters

Flange Diameter 1 5/8"
Flange Thickness 0.25"

Material & Strength Parameters

Material 18-8 Stainless Steel

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (07/08/2021, 219 SVHC) Compliant
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
Price available upon request. Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
  • Fast delivery
  • Enjoy discounts on bulk purchases
  • Secure Payment
  • Fast Global Shipping

Key Features & Benefits at a Glance

  • Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments and outdoor applications
  • Eliminates the need for separate washers thanks to the integrated 1 5/8" flange, saving assembly time and reducing part count
  • Reliable, vibration-resistant fastening ensured by the UNF fine (16 TPI) thread profile and Class 2B thread fit for consistent clamping force
  • High-torque capability and easy installation with the standard external hex drive and 1 1/4" width for common wrenching tools
  • Enhanced load distribution from the 0.25" thick flange, preventing surface damage and maintaining joint integrity under heavy loads
  • Guaranteed material integrity and safety with full compliance to RoHS 3 and REACH environmental regulations
  • Broad compatibility with right-hand thread direction and inch measurement system for use in a wide range of North American machinery and equipment

Professional Applications & Engineering Value

This heavy-duty flange nut is engineered to solve critical challenges in industrial assembly and maintenance. The 18-8 Stainless Steel material provides excellent resistance to rust and corrosion, making it a durable choice for applications exposed to moisture, chemicals, or extreme weather conditions, such as in construction, agricultural machinery, and marine equipment. The 3/4"-16 UNF fine thread and Class 2B thread fit offer superior resistance to loosening under vibration, a common failure point in dynamic systems. The large 1 5/8" flange diameter acts as a built-in washer, distributing clamp load over a wider area to protect soft materials and reduce the risk of joint fatigue. This design is particularly valuable in structural frameworks, automotive assemblies, and heavy equipment where reliability and long-term performance are non-negotiable.

Specification Summary & Compliance

This flange nut conforms to Class 2B thread tolerances for a free-spinning fit, ensuring ease of assembly with commercial bolts. The UNF (Unified National Fine) thread standard and inch system measurements guarantee compatibility with a broad range of industrial components. Manufacturing and material composition are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances and supporting sustainable procurement practices.

🔍
Cancel