S-90580A815 7/8"-9 ASTM A563 Hex Nuts

Hex Nuts

0955FA00018 Hex Nuts
0955FA00018 Hex Nuts

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

Part No.
Part No. 0955FA00018
Equivalent to mcmaster :
90580A815

Basic Information

System of Measurement Inch
Nut Type Hex
Specifications Met ASTM A563

Dimension Parameters

Width 1 7/16"
Height 55/64"

Thread Parameters

Thread Type UNC
Thread Size 7/8"-9
Thread Direction Right Hand
Thread Spacing Coarse
Thread Fit Class 2B

Head Parameters

Drive Style External Hex
Hex Nut Profile Extra Wide

Material & Strength Parameters

Material Hot-Dipped Galvanized Steel
Fastener Strength Grade/Class ASTM Grade C

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) 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 protection with hot-dipped galvanized steel construction for extended service life in harsh environments
  • Enhanced durability through ASTM Grade C certification, ensuring reliable performance in heavy-duty applications
  • Easy installation and removal with extra wide external hex profile providing superior tool grip and torque transmission
  • Secure fastening with Class 2B thread fit maintaining consistent clamping force and vibration resistance
  • Broad compatibility with 7/8"-9 UNC coarse threads matching standard industrial components and equipment
  • Environmental compliance meeting RoHS 3 standards for safe use in regulated industries
  • Optimized strength-to-weight ratio through precise 1-7/16" width and 55/64" height dimensions

Professional Applications & Engineering Value

This heavy-duty hex nut delivers exceptional engineering value through its hot-dipped galvanized steel construction and ASTM A563 Grade C certification. The extra wide hex profile enables higher torque application without stripping, while the 7/8"-9 UNC coarse thread configuration ensures rapid assembly in structural steel, heavy machinery, and construction applications. The Class 2B thread fit provides optimal clearance for easy installation while maintaining vibration resistance in dynamic load conditions. The zinc coating from the hot-dip galvanizing process creates a sacrificial barrier that significantly extends service life in corrosive environments, making it ideal for outdoor infrastructure, marine applications, and industrial equipment exposed to moisture and chemicals.

Specification Summary & Compliance

Manufactured to ASTM A563 Grade C specifications with Class 2B thread fit tolerance and UNC coarse thread standards. Dimensions include 1-7/16" width and 55/64" height with external hex drive configuration. Compliant with RoHS 3 (2015/863/EU) environmental regulations and manufactured using right-hand thread direction for standard industrial applications.

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