S-91223A331 10-32 x 1/4" 316 Stainless Steel Ultra-Low-Profile Socket Head Screws

316 Stainless Steel Ultra-Low-Profile Socket Head Screws

0031FA00044 316 Stainless Steel Ultra-Low-Profile Socket Head Screws
0031FA00044 316 Stainless Steel Ultra-Low-Profile Socket Head Screws

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

Part No.
Part No. 0031FA00044
Equivalent to mcmaster :
91223A331

Basic Information

System of Measurement Inch

Head Parameters

Head Type Socket
Head Diameter 13/32"
Head Diameter Tolerance -0.005" to 0.005"
Head Height 1/16"
Socket Head Profile Ultra-Low

Dimensions

Length 1/4"
Shoulder Diameter 1/4"
Shoulder Length 1/16"

Thread Parameters

Thread Type UNC
Thread Size 10-32
Thread Diameter 0.19"
Thread Spacing Fine
Thread Direction Right Hand
Thread Fit Class 2A
Threading Fully Threaded

Tip & Drive Parameters

Drive Style Hex
Drive Size 3/32"

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 extended service life.
  • High-strength performance offering 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing in demanding applications.
  • Precise thread engagement with a Class 2A fit and 10-32 UNC fine threading, ensuring secure fastening and vibration resistance.
  • Space-saving ultra-low profile head for use in confined areas, providing a flush finish without compromising on drive stability.
  • Easy installation and removal using a standard 3/32" hex key, facilitating efficient assembly and maintenance.
  • Strict dimensional control with head diameter tolerance of -0.005" to 0.005" for consistent quality and fit.
  • Compliance with environmental regulations, being RoHS 3 and REACH compliant for safe and sustainable industrial use.

Professional Applications & Engineering Value

This 316 Stainless Steel socket head cap screw is engineered to address critical challenges in precision assembly and corrosive environments. The ultra-low profile head minimizes protrusion, making it perfect for compact machinery, electronics enclosures, and automotive components where space is limited. Its 10-32 UNC fine thread with a Class 2A fit provides excellent vibration resistance and thread integrity, reducing the risk of loosening under dynamic loads. The corrosion-resistant material ensures durability in marine, chemical, and outdoor applications, while the hex drive design allows for high-torque installation without stripping. Ideal for OEMs and maintenance teams requiring reliable, high-performance industrial fasteners that meet stringent quality and regulatory standards.

Specification Summary & Compliance

This socket head cap screw adheres to UNC thread standards with a Class 2A thread fit for precise dimensional accuracy. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances. The screw features a fully threaded design with a 1/4" length, 13/32" head diameter, and 1/16" head height, providing consistent performance in accordance with industrial fastener specifications.

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