S-91223A312 6-32 x 3/8" 316 Stainless Steel Ultra-Low-Profile Socket Head Screws

316 Stainless Steel Ultra-Low-Profile Socket Head Screws

0031FA00027 316 Stainless Steel Ultra-Low-Profile Socket Head Screws
0031FA00027 316 Stainless Steel Ultra-Low-Profile Socket Head Screws

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Part No.
Part No. 0031FA00027
Equivalent to mcmaster :
91223A312

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 3/8"
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 industrial and marine environments
  • High-strength performance delivering 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing applications
  • Precise Class 2A thread fit ensuring consistent engagement and reduced risk of cross-threading during assembly
  • Ultra-low socket head profile for space-constrained applications while maintaining full hex drive functionality
  • Environmental compliance with RoHS 3 and REACH regulations, meeting strict international substance restrictions
  • Coarse UNC threading providing faster installation and better debris resistance in demanding conditions
  • Full threading along entire 3/8" length for maximum adjustment flexibility and secure fastening depth

Professional Applications & Engineering Value

This 316 stainless steel socket head cap screw with 6-32 UNC coarse threads addresses critical challenges in precision machinery, marine equipment, and chemical processing applications. The ultra-low profile head design enables installation in confined spaces where standard fasteners cannot fit, while maintaining the torque capacity of the 1/16" hex drive. The Class 2A thread fit provides consistent engagement without binding, reducing assembly time and preventing damage to mating components. Engineered for environments requiring both corrosion resistance and mechanical strength, this fastener's fully threaded design ensures maximum grip length adjustment while the right-hand threading follows industry standard installation practices.

Specification Summary & Compliance

Manufactured to inch system standards with Class 2A thread fit tolerance for UNC coarse threading. Features include: 6-32 thread size, 3/8" length, 1/16" hex drive, and ultra-low socket head profile. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and restricted substance adherence. Mechanical properties include 70,000 psi tensile strength and Rockwell B70 hardness for consistent performance in industrial applications.

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