S-94450A270 1/2"-13 Hex Nuts

Hex Nuts

0931FA00020 Hex Nuts
0931FA00020 Hex Nuts

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

Part No.
Part No. 0931FA00020
Equivalent to mcmaster :
94450A270

Basic Information

System of Measurement Inch
Nut Type Hex

Dimension Parameters

Width 3/4"
Height 5/16"

Thread Parameters

Thread Type UNC
Thread Size 1/2"-13
Thread Direction Left Hand
Thread Spacing Coarse
Thread Fit Class 2B

Head Parameters

Drive Style External Hex
Hex Nut Profile Thin

Material & Strength Parameters

Material 18-8 Stainless Steel

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (06/10/2022, 224 SVHC) Compliant
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Corrosion-resistant 18-8 stainless steel construction ensures long-term reliability in harsh industrial environments, reducing maintenance costs and downtime.
  • Left-hand thread direction provides secure fastening in applications where standard right-hand threads may loosen due to rotational forces.
  • Thin hex nut profile (5/16" height) saves space and weight in compact assemblies while maintaining full thread engagement.
  • Class 2B thread fit with UNC coarse spacing delivers consistent engagement and easy assembly, minimizing cross-threading risks.
  • External hex drive design offers superior torque transmission for secure installations using standard wrench tools.
  • Full RoHS 3 and REACH compliance guarantees environmental safety and regulatory acceptance for global industrial applications.
  • 3/4" width across flats provides ample wrenching surface for reliable tightening in high-vibration environments.

Professional Applications & Engineering Value

This left hand thin hex nut addresses critical engineering challenges in rotating machinery, conveyor systems, and automotive assemblies where reverse-direction threads prevent accidental loosening. The 18-8 stainless steel material delivers exceptional corrosion resistance, making it ideal for food processing equipment, marine hardware, and chemical plants where moisture and corrosive agents are present. The UNC coarse thread configuration ensures rapid installation and reliable performance in high-vibration industrial settings, while the thin profile enables use in space-constrained applications without compromising strength. These external hex drive nuts maintain dimensional stability under extreme torque conditions, providing engineers with a dependable Class 2B thread fit solution for demanding fastening requirements.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2B thread fit tolerances and UNC coarse thread spacing (1/2"-13). Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility. The external hex drive features standard 3/4" width across flats with 5/16" height thin profile configuration, maintaining compatibility with industrial wrenching tools and assembly processes.

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