S-90152A329 1/4"-20 x 1 1/4" ASME B18.3, ASTM F837 Stainless Steel Wire-Lockable Socket Head Screws

Stainless Steel Wire-Lockable Socket Head Screws

0039FA00043 Stainless Steel Wire-Lockable Socket Head Screws
0039FA00043 Stainless Steel Wire-Lockable Socket Head Screws

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

Part No.
Part No. 0039FA00043
Equivalent to mcmaster :
90152A329

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 1/4"
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

  • Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and reducing replacement costs
  • Superior tensile strength of 80,000 psi ensures reliable, high-load fastening for demanding industrial applications
  • Precise Class 3A thread fit provides consistent engagement and vibration resistance, minimizing the risk of loosening
  • Hex socket drive (3/16") allows for high-torque installation and removal in confined spaces
  • Full threading and coarse UNC thread enables faster assembly and a stronger grip across the entire fastener length
  • Compliance with ASME B18.3 and ASTM F837 standards guarantees dimensional accuracy and material quality for engineering consistency
  • RoHS 3 compliance ensures environmental safety and meets international regulatory requirements for hazardous substances

Professional Applications & Engineering Value

This 18-8 Stainless Steel Socket Head Cap Screw is engineered to solve critical fastening challenges in machinery, automotive, and aerospace assemblies. The 1/4"-20 UNC Class 3A thread and coarse thread spacing provide excellent resistance to vibrational loosening, a common failure point in dynamic equipment. The hex drive design facilitates secure tool engagement, allowing for precise torque application even in hard-to-reach areas. Manufactured from corrosion-resistant stainless steel, these screws maintain integrity in moist or chemically aggressive environments, extending service life and reducing maintenance downtime. Their high tensile strength and fully threaded profile make them ideal for creating robust, permanent connections in structural and heavy-duty industrial applications.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC thread with a Class 3A fit for high precision, a 3/16" hex drive, and is fully threaded. It is manufactured in compliance with ASME B18.3 and ASTM F837 specifications, ensuring dimensional consistency and mechanical performance. The product is also RoHS 3 (2015/863/EU) Compliant, confirming it is free from restricted hazardous substances.

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