S-92505A855 5/8"-18 x 1" ASME B18.3, ASTM F912 Set Screws

Set Screws

0657FA00085 Set Screws
0657FA00085 Set Screws

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

Part No.
Part No. 0657FA00085
Equivalent to mcmaster :
92505A855

Basic Information

System of Measurement Inch

Head Parameters

Head Type Headless

Dimensions

Length 1"

Thread Parameters

Thread Type UNF
Thread Size 5/8"-18
Thread Diameter 0.625"
Thread Spacing Fine
Thread Direction Right Hand
Thread Fit Class 3A

Tip & Drive Parameters

Tip Type Extended
Tip Length 0.164"
Tip Length Tolerance -0.005" to 0"
Tip Diameter 0.468"
Tip Diameter Tolerance -0.012" to 0"
Drive Style Hex
Drive Size 5/16"

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 that protects against rust in demanding industrial environments
  • Exceptional thread precision with Class 3A fit ensuring reliable, vibration-resistant fastening in critical applications
  • Enhanced torque transmission through 5/16" hex drive design for secure installation without head protrusion
  • Optimized grip and positioning with extended tip design providing superior holding power in assemblies
  • High-strength performance from alloy steel construction with Rockwell C45 hardness for heavy-duty applications
  • Fine thread spacing advantage offering improved adjustment precision and better load distribution
  • Regulatory compliance assurance meeting ASME B18.3, RoHS 3, and REACH standards for global industrial use

Professional Applications & Engineering Value

This black oxide alloy steel set screw delivers exceptional engineering value in precision industrial applications where vibration resistance and corrosion protection are critical. The Class 3A thread fit ensures minimal backlash and superior clamping force in machinery, automotive, and heavy equipment assemblies. The extended tip design provides enhanced bite into mating components, preventing slippage under dynamic loads. With fine UNF threading and headless configuration, this fastener offers flush mounting capabilities while maintaining Rockwell C45 hardness for long-term reliability in high-stress environments. The combination of 5/16" hex drive and precise tolerances enables efficient installation in confined spaces without compromising performance.

Specification Summary & Compliance

This set screw features precision 5/8"-18 UNF fine threads with Class 3A fit for exacting tolerance requirements. The extended tip maintains tight dimensional control with tip length tolerance of -0.005" to 0" and tip diameter tolerance of -0.012" to 0". Manufactured to ASME B18.3 specifications and compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring suitability for regulated industrial applications worldwide.

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