S-94288A116 1/4"-20 x 1" Extreme-Strength Stainless Steel Flanged Hex Head Screws

Extreme-Strength Stainless Steel Flanged Hex Head Screws

0273FA00003 Extreme-Strength Stainless Steel Flanged Hex Head Screws
0273FA00003 Extreme-Strength Stainless Steel Flanged Hex Head Screws

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

Part No.
Part No. 0273FA00003
Equivalent to mcmaster :
94288A116

Basic Information

Screw Features Flanged
System of Measurement Inch

Head Parameters

Head Type Hex
Head Width 5/16"
Head Height 1/4"

Dimensions

Length 1"
Flange Diameter 33/64"

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 18-8 Stainless Steel
Hardness Rockwell C38
Tensile Strength 170000 psi
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 18-8 stainless steel material, ideal for harsh industrial environments
  • Enhanced load distribution through the integrated flange design, reducing surface pressure and preventing loosening
  • High mechanical reliability with 170,000 psi tensile strength and Rockwell C38 hardness for demanding applications
  • Quick installation and removal with external hex drive and 5/16" head width for standard tool compatibility
  • Secure coarse thread engagement using UNC Class 2A threads, ensuring consistent fit and vibration resistance
  • Full thread coverage along the 1" length provides maximum grip and holding power in various materials
  • Precise dimensional compliance with standardized inch measurements for reliable interchangeability

Professional Applications & Engineering Value

These 18-8 stainless steel hex head screws deliver exceptional performance in demanding industrial settings where corrosion resistance and mechanical strength are critical. The integrated flange design eliminates the need for separate washers while providing superior load distribution, preventing surface damage and maintaining clamp force under vibration. With UNC coarse threads and Class 2A fit, these fully threaded screws ensure rapid installation and reliable performance in assembly lines, machinery, and structural applications. The combination of 170,000 psi tensile strength and external hex drive makes them ideal for high-stress applications requiring frequent maintenance or disassembly, from manufacturing equipment to marine components exposed to corrosive environments.

Specification Summary & Compliance

Manufactured to precise inch dimensions including 1/4"-20 UNC thread with Class 2A tolerance for consistent fit. Features include 1" length, 5/16" head width, 33/64" flange diameter, and full threading. Complies with standard industrial specifications for stainless steel fasteners and meets material requirements for corrosion resistance applications. The 18-8 stainless steel composition ensures compliance with industry standards for mechanical properties and environmental durability.

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