S-90291A183 8-32 ASME B18.3 Set Screws

Set Screws

0644FA00012 Set Screws
0644FA00012 Set Screws

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

Part No.
Part No. 0644FA00012
Equivalent to mcmaster :
90291A183

Basic Information

System of Measurement Inch

Head Parameters

Head Type Headless

Thread Parameters

Thread Type UNC
Thread Size 8-32
Thread Diameter 0.164"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 3A

Tip & Drive Parameters

Tip Type Soft
Tip Length 0.047"
Tip Diameter 0.094"
Tip Material Nylon 6/6 Plastic
Tip Color Green
Tip Temperature Range -50° to 250° F
Drive Style Hex
Drive Size 5/64"

Material & Strength

Material 18-8 Stainless Steel
Hardness Rockwell B80

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.3

Installation & Application

Long 1/8"
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 vibration resistance with durable nylon 6/6 plastic tip that prevents loosening under dynamic loads
  • High thread precision with Class 3A fit ensuring reliable, secure fastening in demanding applications
  • Excellent corrosion resistance from 18-8 stainless steel construction for long service life in harsh environments
  • Wide temperature tolerance (-50° to 250°F) maintaining performance across extreme operating conditions
  • Secure installation with hex drive design providing positive torque control during assembly
  • Damage-free fastening thanks to soft nylon tip that protects sensitive component surfaces
  • Industry compliance meeting ASME B18.3 specifications for guaranteed dimensional accuracy

Professional Applications & Engineering Value

This 8-32 UNC set screw with nylon 6/6 plastic tip delivers critical engineering solutions for vibration-prone assemblies. The Class 3A thread fit provides exceptional dimensional accuracy, eliminating play in precision equipment while the 18-8 stainless steel construction ensures corrosion resistance in demanding industrial environments. The headless design with hex drive allows for flush mounting in confined spaces, making it ideal for machinery, automotive components, and electronic enclosures where space optimization and vibration resistance are paramount. The coarse UNC thread facilitates quick installation while maintaining the holding power required for permanent fastening applications.

Specification Summary & Compliance

Manufactured to ASME B18.3 standards with Class 3A thread fit precision, this set screw features 8-32 UNC coarse threads with right-hand direction. The component is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental responsibility while meeting industrial safety requirements. The Rockwell B80 hardness provides optimal strength without compromising the corrosion resistance of the 18-8 stainless steel material.

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