S-93190A562 1/4"-20 x 4 1/2" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

0247FA00342 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws
0247FA00342 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

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

Part No.
Part No. 0247FA00342
Equivalent to mcmaster :
93190A562

Basic Information

System of Measurement Inch

Head Parameters

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

Dimensions

Length 4 1/2"

Thread Parameters

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

Tip & Drive Parameters

Drive Style External Hex

Material & Strength

Material 316 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 316 stainless steel construction, ideal for harsh environments including marine and chemical processing.
  • Exceptional tensile strength rated at 70,000 psi, ensuring reliable performance under high-stress industrial loads.
  • Precise Class 2A thread fit for smooth assembly and consistent clamping force, reducing installation time and risk of cross-threading.
  • Full threading along the 4 1/2" length provides maximum grip and adjustability in deep or variable material thicknesses.
  • Durable Rockwell B70 hardness maintains thread integrity and head shape during repeated use and high-torque driving.
  • External hex drive design allows for high torque application with standard tools, facilitating quick and secure fastening.
  • Compliance with ASME B18.2.1, RoHS 3, and REACH ensures product reliability, safety, and environmental responsibility for global supply chains.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this 1/4"-20 UNC hex head screw in 316 stainless steel addresses critical challenges like corrosion-induced failure and mechanical loosening. Its coarse thread and fully threaded design enhance grip in soft materials or assemblies subject to vibration, while the external hex drive supports efficient installation with common wrenches. Ideal for structural frameworks, machinery, and outdoor equipment, the screw’s high tensile strength and corrosion-resistant properties ensure long-term reliability, reducing maintenance costs and downtime in sectors from construction to marine engineering.

Specification Summary & Compliance

This screw adheres to Class 2A thread fit per UNC standards, ensuring dimensional accuracy for consistent assembly. It meets ASME B18.2.1 manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing it is free from hazardous substances and suitable for international industrial applications.

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