S-90152A320 1/4"-20 x 1/2" ASME B18.3, ASTM F837 Stainless Steel Wire-Lockable Socket Head Screws

Stainless Steel Wire-Lockable Socket Head Screws

0039FA00040 Stainless Steel Wire-Lockable Socket Head Screws
0039FA00040 Stainless Steel Wire-Lockable Socket Head Screws

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

Part No.
Part No. 0039FA00040
Equivalent to mcmaster :
90152A320

Basic Information

System of Measurement Inch

Head Parameters

Head Type Socket
Head Diameter 3/8"
Head Height 1/4"
Socket Head Profile Standard

Dimensions

Length 1/2"
Hole Diameter 0.063"

Thread Parameters

Thread Type UNC
Thread Size 1/4"-20
Thread Diameter 0.25"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 3A
Threading Fully Threaded
Locking Type Wire

Tip & Drive Parameters

Drive Style Hex
Drive Size 3/16"

Material & Strength

Material 18-8 Stainless Steel
Hardness Rockwell B70
Tensile Strength 80000 psi

Temperature & Environment

RoHS Compliant
Specifications Met ASME B18.3, ASTM F837
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.
  • High-strength performance with 80,000 psi tensile strength, ensuring reliable load-bearing in demanding applications.
  • Precise, secure fastening from Class 3A thread fit, minimizing the risk of loosening under vibration.
  • Efficient installation and removal with a 3/16" hex drive, allowing for high torque application in confined spaces.
  • Excellent durability and wear resistance due to Rockwell B70 hardness, extending the screw's service life.
  • Broad compatibility with 1/4"-20 UNC coarse threads, facilitating quick assembly and disassembly.
  • Full regulatory compliance with ASME B18.3 and RoHS 3, ensuring quality and environmental safety for industrial use.

Professional Applications & Engineering Value

Engineered for precision and reliability, these socket head cap screws are crafted from 18-8 stainless steel to combat corrosion in demanding settings like machinery, automotive, and aerospace assemblies. The 1/4"-20 UNC coarse thread and Class 3A fit provide a tight, secure connection that resists vibration-induced loosening, a common industrial challenge. With an 80,000 psi tensile strength and Rockwell B70 hardness, they offer exceptional durability under high-stress conditions. The 3/16" hex drive enables efficient torque application in tight spaces, reducing assembly time and improving productivity for B2B clients seeking robust precision fasteners.

Specification Summary & Compliance

This product adheres to precise dimensional standards, including a Class 3A thread fit for superior accuracy and a 1/4"-20 UNC coarse thread in the inch system. It meets ASME B18.3 specifications (referencing ASTM F837) and is RoHS 3 (2015/863/EU) Compliant, ensuring environmental and safety regulations are fulfilled for industrial applications.

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