S-91845A340 1/2"-28 Hex Nuts

Hex Nuts

0881FA00053 Hex Nuts
0881FA00053 Hex Nuts

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

Part No.
Part No. 0881FA00053
Equivalent to mcmaster :
91845A340

Basic Information

System of Measurement Inch
Nut Type Hex

Dimension Parameters

Width 3/4"
Height 7/16"

Thread Parameters

Thread Type UNEF
Thread Size 1/2"-28
Thread Direction Right Hand
Thread Spacing Extra Fine
Thread Fit Class 2B

Head Parameters

Drive Style External Hex
Hex Nut Profile Standard

Material & Strength Parameters

Material 18-8 Stainless Steel

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (01/17/2023, 233 SVHC) Compliant
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
  • Exceptional thread engagement and vibration resistance from UNEF extra fine threading for secure fastening in precision applications
  • Reliable, consistent fit with Class 2B thread tolerance ensuring smooth assembly and reduced cross-threading risks
  • Easy installation and removal using standard tools thanks to the external hex drive and standard profile design
  • Compliance with stringent environmental regulations including RoHS 3 and REACH, making them suitable for regulated industries
  • Durable, long-lasting performance with a robust 3/4" width and 7/16" height for stable load distribution
  • Right-hand threading compatibility for seamless integration with common industrial components

Professional Applications & Engineering Value

This 1/2"-28 UNEF extra fine thread hex nut is engineered to address critical challenges in precision assembly and high-vibration environments. Made from 18-8 Stainless Steel, it offers excellent resistance to corrosion and oxidation, extending service life in demanding settings like aerospace, automotive, and electronics manufacturing. The extra fine thread spacing provides finer adjustment control and enhanced holding power, reducing the risk of loosening under dynamic loads. With a Class 2B thread fit, it ensures precise, reliable mating with mating threads, minimizing assembly errors and improving overall system integrity. The standard external hex drive allows for efficient torque application with common wrenches, streamlining maintenance and reducing downtime in industrial operations.

Specification Summary & Compliance

This hex nut features a 1/2"-28 UNEF extra fine thread with Class 2B thread fit for consistent dimensional accuracy and smooth threading. It adheres to standard inch measurement specifications, with a width of 3/4" and height of 7/16". The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety standards for industrial use.

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