S-92845A749 5/16"-18 x 1 1/2" ASME B18.3 Set Screws

Set Screws

0658FA00084 Set Screws
0658FA00084 Set Screws

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

Part No.
Part No. 0658FA00084
Equivalent to mcmaster :
92845A749

Basic Information

System of Measurement Inch

Head Parameters

Head Type Headless

Dimensions

Length 1 1/2"

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 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
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Key Features & Benefits at a Glance

  • Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh industrial environments
  • Exceptional holding power achieved through Class 3A thread fit, ensuring maximum engagement and vibration resistance
  • Precision installation control with 5/32" hex drive design, allowing for consistent torque application and secure fastening
  • Enhanced grip and positioning thanks to the extended tip design (0.203" diameter) that provides superior bite into mating surfaces
  • Reliable coarse threading with 5/16"-18 UNC specification for quick assembly and disassembly in demanding applications
  • Optimized mechanical strength with Rockwell B80 hardness rating, delivering excellent durability under heavy loads
  • Full regulatory compliance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

This 18-8 stainless steel set screw delivers exceptional engineering value in industrial applications where vibration resistance and corrosion protection are critical. The Class 3A thread fit provides tighter tolerances than standard fasteners, eliminating play and maintaining precise alignment in machinery, automotive components, and power transmission systems. The extended tip design with controlled diameter (0.203") creates deeper penetration into shaft materials, preventing slippage in high-torque environments. Manufactured to ASME B18.3 specifications, this hex headless set screw offers reliable performance in permanent positioning applications while the coarse UNC threading ensures quick installation and removal when maintenance is required. The combination of Rockwell B80 hardness and stainless steel composition makes it ideal for applications exposed to moisture, chemicals, or temperature variations.

Specification Summary & Compliance

This precision set screw features 5/16"-18 UNC coarse threads with Class 3A fit for superior dimensional accuracy and engagement. The extended tip maintains tight diameter tolerance (-0.008" to 0") and length tolerance (-0.005" to 0") for consistent performance. Manufactured in compliance with ASME B18.3 standards and certified RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental responsibility and regulatory adherence for global industrial applications.

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