S-91223A314 6-32 x 5/8" 316 Stainless Steel Ultra-Low-Profile Socket Head Screws

316 Stainless Steel Ultra-Low-Profile Socket Head Screws

0031FA00029 316 Stainless Steel Ultra-Low-Profile Socket Head Screws
0031FA00029 316 Stainless Steel Ultra-Low-Profile Socket Head Screws

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Part No.
Part No. 0031FA00029
Equivalent to mcmaster :
91223A314

Basic Information

System of Measurement Inch

Head Parameters

Head Type Socket
Head Diameter 7/32"
Head Diameter Tolerance -0.005" to 0.005"
Head Height 3/64"
Socket Head Profile Ultra-Low

Dimensions

Length 5/8"
Shoulder Diameter 9/64"
Shoulder Length 3/64"

Thread Parameters

Thread Type UNC
Thread Size 6-32
Thread Diameter 0.138"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 2A
Threading Fully Threaded

Tip & Drive Parameters

Drive Style Hex
Drive Size 1/16"

Material & Strength

Material 316 Stainless Steel
Hardness Rockwell B70
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

  • Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and chemical exposure.
  • High-strength performance offering 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing in demanding applications.
  • Precise, secure fastening ensured by the Class 2A thread fit and 6-32 UNC coarse threads, reducing cross-threading and simplifying installation.
  • Space-saving ultra-low profile head with a 1/16" hex drive, allowing use in confined spaces while providing ample torque transfer.
  • Consistent dimensional accuracy with tight head diameter tolerance (-0.005" to 0.005") for uniform fit and assembly reliability.
  • Full thread engagement along the 5/8" length, providing maximum grip and distribution of clamping force.
  • Compliance with strict environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for regulated industries.

Professional Applications & Engineering Value

This 316 Stainless Steel Socket Head Cap Screw is engineered to address critical challenges in industrial and precision assemblies. Its ultra-low profile socket head and compact 1/16" hex drive enable installation in tight spaces where standard fasteners cannot fit, without compromising on torque application. The 6-32 UNC coarse thread with a Class 2A fit ensures quick, reliable engagement, minimizing the risk of thread damage during high-volume assembly. Made from 316 stainless steel, it offers exceptional resistance to corrosion, acids, and chlorides, making it ideal for marine, chemical processing, and food-grade equipment. With a 70,000 psi tensile strength and Rockwell B70 hardness, it maintains integrity under vibration and heavy loads, providing long-term reliability in machinery, automotive, and aerospace applications.

Specification Summary & Compliance

This socket head cap screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy and ease of assembly. Manufacturing complies with industry standards for inch-system fasteners, ensuring precise head diameter and length tolerances. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial use.

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