S-93996A723 8-32 Shoulder Screws

Shoulder Screws

0587FA00021 Shoulder Screws
0587FA00021 Shoulder Screws

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

Part No.
Part No. 0587FA00021
Equivalent to mcmaster :
93996A723

Basic Information

System of Measurement Inch

Head Parameters

Head Type Socket
Head Diameter 5/16"
Head Height 5/32"
Head Texture Smooth
Socket Head Profile Standard

Dimensions

Shoulder Diameter 3/16"
Shoulder Diameter Tolerance -0.001" to 0"
Shoulder Fit Precise
Shoulder Length 1/2"
Shoulder Length Tolerance 0" to 0.002"

Thread Parameters

Thread Type UNC
Thread Size 8-32
Thread Diameter 0.164"
Thread Spacing Coarse
Thread Length 3/16"
Thread Direction Right Hand
Thread Fit Class 2A
Locking Type Thread Locker
Thread Locker Type Nylon Patch
Thread Locker Temperature Range -70° to 250° F

Tip & Drive Parameters

Drive Style Hex
Drive Size 3/32"

Material & Strength

Material 18-8 Stainless Steel
Hardness Rockwell B55
Tensile Strength 70000 psi

Temperature & Environment

REACH Compliant
RoHS Compliant
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Vibration-resistant locking with permanent nylon patch thread locker, ensuring reliable fastening in high-stress environments from -70° to 250°F
  • Exceptional strength and durability from 18-8 stainless steel construction, offering 70,000 psi tensile strength and Rockwell B55 hardness for long-term performance
  • Precise shoulder fit with controlled diameter and length tolerances, enabling accurate alignment and reduced assembly play in mechanical applications
  • Easy installation and removal using a standard 3/32" hex drive socket head, compatible with common industrial tools
  • Wide compatibility with UNC coarse 8-32 threads and Class 2A fit, ensuring smooth engagement and interchangeability in various assemblies
  • Corrosion resistance inherent to 18-8 stainless steel, suitable for demanding conditions without compromising integrity
  • Regulatory compliance with RoHS 3 and REACH standards, meeting global environmental and safety requirements for industrial components

Professional Applications & Engineering Value

This 8-32 UNC shoulder screw is engineered to address critical challenges in industrial applications where vibration, misalignment, and thermal fluctuations compromise fastener integrity. The nylon patch thread locker provides a permanent locking mechanism that eliminates loosening under dynamic loads, making it ideal for machinery, automotive, and electronics assemblies. Its 18-8 stainless steel composition ensures corrosion resistance and high tensile strength, while the precise shoulder fit with minimal tolerances facilitates accurate component positioning—reducing wear and maintenance needs. With a coarse thread design and Class 2A fit, it enables quick installation and reliable performance in vibration-resistant systems, supporting efficient production and reduced downtime.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with an 8-32 thread size and Class 2A thread fit for consistent dimensional accuracy. The shoulder features precise tolerances: diameter of 3/16" (-0.001" to 0") and length of 1/2" (0" to 0.002"). It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met for industrial use.

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