S-92185A309 1/4"-20 x 3 1/4" Super-Corrosion-Resistant 316 Stainless Steel Socket Head Screws

Super-Corrosion-Resistant 316 Stainless Steel Socket Head Screws

0018FA00155 Super-Corrosion-Resistant 316 Stainless Steel Socket Head Screws
0018FA00155 Super-Corrosion-Resistant 316 Stainless Steel Socket Head Screws

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

Part No.
Part No. 0018FA00155
Equivalent to mcmaster :
92185A309

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 3 1/4"

Thread Parameters

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

Tip & Drive Parameters

Drive Style Hex
Drive Size 3/16"

Material & Strength

Material 316 Stainless Steel
Finish Passivated
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 from 316 stainless steel construction, ideal for harsh industrial and marine environments
  • Precise Class 3A thread fit ensures reliable engagement and vibration resistance in critical assemblies
  • High tensile strength of 70,000 psi provides exceptional load-bearing capacity for demanding applications
  • Rockwell B70 hardness rating delivers excellent durability and resistance to wear over time
  • Passivated finish enhances surface protection against chemical attack and extends service life
  • Compliance with RoHS 3 and REACH regulations guarantees environmental safety and global market acceptance
  • Hex socket drive design allows for secure installation in confined spaces with standard tools

Professional Applications & Engineering Value

Engineered to address the challenges of corrosive and high-stress environments, this 316 stainless steel socket head cap screw combines material excellence with precision manufacturing. The UNC coarse threads with Class 3A fit provide rapid assembly and superior clamping force in machinery, marine equipment, and chemical processing systems. Its partially threaded design concentrates strength where needed, while the passivated finish significantly reduces the risk of galvanic corrosion. This fastener is particularly valuable in applications requiring repeated disassembly, maintaining thread integrity thanks to its Rockwell B70 hardness and controlled tensile strength of 70,000 psi.

Specification Summary & Compliance

This socket head cap screw meets UNC thread standards with precise Class 3A thread fit for consistent performance. It is manufactured to comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances. The fastener features a 3/16" hex drive, right-hand thread direction, and a minimum thread length of 1" on a 3 1/4" overall length, providing reliable dimensional accuracy for industrial fastening requirements.

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