S-92505A579 5/16"-18 x 5/8" ASME B18.3, ASTM F912 Set Screws

Set Screws

0657FA00036 Set Screws
0657FA00036 Set Screws

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

Part No.
Part No. 0657FA00036
Equivalent to mcmaster :
92505A579

Basic Information

System of Measurement Inch

Head Parameters

Head Type Headless

Dimensions

Length 5/8"

Thread Parameters

Thread Type UNC
Thread Size 5/16"-18
Thread Diameter 0.313"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 3A

Tip & Drive Parameters

Tip Type Extended
Tip Length 0.082"
Tip Length Tolerance -0.005" to 0"
Tip Diameter 0.203"
Tip Diameter Tolerance -0.008" to 0"
Drive Style Hex
Drive Size 5/32"

Material & Strength

Material Black-Oxide Alloy Steel
Hardness Rockwell C45

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.3, ASTM F912
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Superior corrosion resistance with black oxide coating for extended service life in demanding industrial environments
  • Exceptional thread precision with Class 3A fit ensures reliable, vibration-resistant fastening in critical applications
  • High-strength alloy steel construction with Rockwell C45 hardness provides maximum durability under heavy loads
  • Secure hex drive design allows for high torque application without stripping or slipping during installation
  • Extended tip configuration delivers enhanced gripping power and prevents component slippage
  • Coarse UNC threading enables quick installation and removal while maintaining holding strength
  • Full regulatory compliance with ASME B18.3, RoHS 3, and REACH standards for global industrial use

Professional Applications & Engineering Value

This 5/16"-18 UNC set screw delivers exceptional engineering value through its black oxide alloy steel construction and Class 3A thread fit, specifically designed to address common industrial fastening challenges. The extended tip configuration provides superior bite into mating components, preventing rotational slippage in high-vibration applications such as machinery, power transmission systems, and precision equipment. The hex drive design accommodates high installation torque without compromising the fastener integrity, while the coarse thread spacing ensures rapid assembly in production environments. Engineered for industrial set screw applications requiring reliable positioning and secure locking, this fastener maintains consistent performance in demanding conditions where precision and durability are paramount.

Specification Summary & Compliance

Manufactured to exacting ASME B18.3 specifications with Class 3A thread fit precision and UNC coarse threading standards. Features include 5/16"-18 thread size, 5/8" length, extended tip design with controlled diameter and length tolerances, and Rockwell C45 hardness rating. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for safe industrial use worldwide.

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