S-95289A153 5/16"-24 x 3/8" ASME B18.3 Set Screws

Set Screws

0664FA00052 Set Screws
0664FA00052 Set Screws

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

Part No.
Part No. 0664FA00052
Equivalent to mcmaster :
95289A153

Basic Information

System of Measurement Inch

Head Parameters

Head Type Headless

Dimensions

Length 3/8"

Thread Parameters

Thread Type UNF
Thread Size 5/16"-24
Thread Diameter 0.313"
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 0.203"
Tip Diameter Tolerance -0.008" to 0"
Drive Style Hex
Drive Size 5/32"

Material & Strength

Material 18-8 Stainless Steel
Hardness Rockwell B80

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.3
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 18-8 stainless steel construction, ideal for harsh industrial environments
  • Precise thread engagement with Class 3A UNF fine threads ensuring tight, reliable fastening in critical assemblies
  • Enhanced installation security through the 5/32" hex drive, preventing cam-out and enabling high torque application
  • Optimized tip design with extended 0.164" tip for deeper component penetration and improved holding strength
  • Consistent mechanical performance backed by Rockwell B80 hardness for durability under repeated use
  • Space-saving headless profile allowing flush mounting in confined spaces without protruding hardware
  • Regulatory compliance assurance meeting ASME B18.3 standards and environmental directives (RoHS 3, REACH)

Professional Applications & Engineering Value

This 18-8 stainless steel set screw delivers exceptional value in precision assemblies requiring fine thread UNF Class 3A accuracy. The extended tip design enhances grip in soft materials or shallow holes, preventing component slippage in rotating machinery, coupling systems, and adjustable mechanisms. Its headless configuration with hex drive enables secure installation in space-constrained applications while maintaining alignment integrity. The Rockwell B80 hardness ensures consistent performance in high-vibration environments, making it suitable for automotive, aerospace, and industrial equipment where reliable set screw performance is critical for operational safety and maintenance cycles.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with 5/16"-24 UNF Class 3A fine threads ensuring precise dimensional control. Tip dimensions maintain tight tolerances (length: -0.005" to 0", diameter: -0.008" to 0") for consistent engagement. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming suitability for regulated industrial and international supply chains.

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