S-92314A407 1/4"-20 x 4 3/4" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

18-8 Stainless Steel Hex Head Screws

0244FA00947 18-8 Stainless Steel Hex Head Screws
0244FA00947 18-8 Stainless Steel Hex Head Screws

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

Part No.
Part No. 0244FA00947
Equivalent to mcmaster :
92314A407

Basic Information

System of Measurement Inch

Head Parameters

Head Type Hex
Head Width 7/16"
Head Height 5/32"

Dimensions

Length 4 3/4"

Thread Parameters

Thread Type UNC
Thread Size 1/4"-20
Thread Diameter 0.25"
Thread Spacing Coarse
Min Thread Length 3/4"
Thread Direction Right Hand
Thread Fit Class 2A
Threading Partially Threaded

Tip & Drive Parameters

Drive Style External Hex

Material & Strength

Material 18-8 Stainless Steel
Hardness Rockwell B70
Tensile Strength 70000 psi

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.2.1
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
  • Exceptional tensile strength rated at 70,000 psi for reliable performance in demanding applications
  • Precise Class 2A thread fit ensures smooth installation and secure fastening with UNC coarse threads
  • Optimized partial threading provides maximum grip strength while reducing material usage
  • External hex drive design allows for high-torque installation with standard tools
  • Comprehensive compliance with ASME B18.2.1 standards and environmental regulations including RoHS 3 and REACH
  • Rockwell B70 hardness maintains structural integrity under repeated stress and vibration

Professional Applications & Engineering Value

These 18-8 stainless steel hex head screws deliver exceptional engineering value in industrial settings where corrosion resistance and mechanical strength are critical. The 1/4"-20 UNC coarse thread configuration with partial threading provides optimal clamping force while minimizing thread damage during installation. The external hex drive accommodates high-torque applications, making these industrial hex screws ideal for machinery assembly, structural frameworks, and equipment maintenance. The combination of 70,000 psi tensile strength and Rockwell B70 hardness ensures reliable performance in vibrating environments, while the corrosion-resistant properties of 18-8 stainless steel prevent degradation in humid or chemical-exposed applications, significantly extending service life and reducing maintenance frequency.

Specification Summary & Compliance

This 1/4"-20 x 4 3/4" hex head screw features Class 2A thread fit tolerance with UNC coarse threads and minimum 3/4" thread length. Manufactured to ASME B18.2.1 specifications with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The partially threaded design maintains dimensional accuracy while the external hex drive and right-hand thread direction ensure compatibility with standard installation tools and procedures.

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