S-94302A109 5/16"-18 x 1 1/2" Super-Corrosion-Resistant 316 Stainless Steel Serrated-Flange Hex Head Screws

Super-Corrosion-Resistant 316 Stainless Steel Serrated-Flange Hex Head Screws

0280FA00010 Super-Corrosion-Resistant 316 Stainless Steel Serrated-Flange Hex Head Screws
0280FA00010 Super-Corrosion-Resistant 316 Stainless Steel Serrated-Flange Hex Head Screws

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

Part No.
Part No. 0280FA00010
Equivalent to mcmaster :
94302A109

Basic Information

Screw Features Flanged
System of Measurement Inch

Head Parameters

Head Type Hex
Head Width 1/2"
Head Height 21/64"

Dimensions

Length 1 1/2"
Flange Diameter 11/16"

Thread Parameters

Thread Type UNC
Thread Size 5/16"-18
Thread Diameter 0.3125"
Thread Spacing Coarse
Min Thread Length 7/8"
Thread Direction Right Hand
Thread Fit Class 2A
Threading Partially Threaded
Locking Type Serrations

Tip & Drive Parameters

Drive Style External Hex

Material & Strength

Material 316 Stainless Steel
Hardness Rockwell B100
Tensile Strength 100000 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 in harsh environments thanks to premium 316 Stainless Steel construction.
  • Exceptional mechanical strength with a 100,000 psi tensile strength and Rockwell B100 hardness for reliable, heavy-duty applications.
  • Enhanced locking and vibration resistance provided by the flange with serrations, preventing loosening under dynamic loads.
  • Efficient installation and removal enabled by the external hex drive and coarse UNC thread, reducing assembly time.
  • Optimized load distribution and material savings from the partially threaded design and integrated flange.
  • Guaranteed dimensional consistency and reliable thread engagement with Class 2A thread fit.
  • Compliance with strict environmental regulations including RoHS 3 and REACH, ensuring safety and sustainability.

Professional Applications & Engineering Value

This 5/16"-18 UNC hex head screw is engineered to solve critical challenges in demanding industrial settings. The 316 Stainless Steel material offers outstanding resistance to corrosion, making it ideal for chemical processing, marine, and food-grade equipment where exposure to moisture and aggressive agents is common. The combination of a flanged head with serrations and partial threading provides superior vibration resistance and clamping force, preventing joint failure in machinery, structural frames, and heavy equipment assemblies. Its coarse thread and external hex drive ensure quick, secure fastening even in high-vibration environments, reducing maintenance downtime and enhancing the longevity of your installations.

Specification Summary & Compliance

This fastener adheres to UNC coarse thread standards with a Class 2A thread fit for consistent dimensional accuracy and reliable performance. Manufacturing and material specifications ensure compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the product is free from hazardous substances and suitable for global industrial use.

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