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5/16-18 Grade 5 Alloy Steel Hex Nut, Black Oxide, 1" Flats, Pkg Qty 1000

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Industrial · SKU: AA0431616

5/16-18 Grade 5 Alloy Steel Hex Nut, Black Oxide, 1" Flats, Pkg Qty 1000

This 5/16-18 hex nut is manufactured from Grade 5 alloy steel, providing high tensile strength and reliable performance for demanding industrial fastening applications.

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$59.99
$0.06/each(1000 pcs/pkg)

Volume Pricing - Buy More, Save More

QuantityDiscountUnit Price
1 - 10-$59.99
11 - 50-5%$56.99
51+-10%$53.99
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Quick Answer

How Buyers Should Evaluate 5/16-18 Grade 5 Alloy Steel Hex Nut, Black Oxide, 1" Flats, Pkg Qty 1000

This 5/16-18 hex nut is manufactured from Grade 5 alloy steel, providing high tensile strength and reliable performance for demanding industrial fastening applications. Use the quick checks below to decide whether direct checkout is enough or whether an RFQ will reduce sourcing risk.

Quick Spec Check

  • System of Measurement: Imperial
  • Material Grade/Class: Grade 5
  • Material: Alloy Steel

Purchase Details

  • Online price starts at $59.99.
  • Minimum order quantity: 1 unit.
  • Pack quantity: 1000 / Each.
  • Lead time: 2-3 weeks.

Use RFQ When

  • Use RFQ when you need bulk pricing, alternate pack sizes, or multi-SKU comparison.
  • Request support when fit, material, or substitute selection needs confirmation before order.
  • Escalate to sourcing when timeline, freight, or stocking strategy matters more than one-off checkout speed.

Technical Specifications

System of MeasurementImperial
Material Grade/ClassGrade 5
MaterialAlloy Steel
Thread Size5
FinishBlack Oxide
Width Across Flats1
Product Details

Full Description

Application context, construction notes, and selection details for evaluating fit before purchase or repeat ordering.

Overview

This 5/16-18 hex nut is engineered for high-strength fastening in demanding industrial and construction environments. Manufactured from Grade 5 alloy steel, it provides superior tensile strength and reliable clamping force for critical assemblies. The nut features a black oxide finish that delivers a durable, corrosion-resistant layer for extended service life in various conditions. Its dimensions strictly adhere to the ASME B18.2.2 standard, guaranteeing consistent quality, precise fit, and full interchangeability with other standard components. Packaged in a bulk quantity of 1000 units, this nut is an efficient solution for high-volume production lines, maintenance kits, and large-scale projects.

Key Features

Manufactured from high-strength Grade 5 alloy steel Black oxide finish for corrosion resistance and a professional appearance Conforms to ASME B18.2.2 dimensional standards for guaranteed compatibility 1-inch width across flats for secure, standard wrench engagement Bulk packaging of 1000 units supports project efficiency and reduces downtime

Specifications

System of Measurement: Imperial Material Grade/Class: Grade 5

Material

Alloy Steel Thread Size: 5/16-18 UNC Finish: Black Oxide Width Across Flats: 1 inch Package Quantity: 1000

Applications

General manufacturing and heavy equipment assembly Structural steel fabrication and construction Automotive and transportation component repair Machinery maintenance and repair operations Infrastructure and utility projects

Frequently Asked Questions

What are the key specifications and strength rating of this hex nut?
This is a 5/16-18 thread size hex nut made from Grade 5 alloy steel, providing a minimum proof load of approximately 85,000 PSI and a tensile strength of 120,000 PSI. It features a black oxide finish for corrosion resistance and has a standard 1-inch width across flats.
What are the typical applications for a Grade 5, black oxide hex nut?
Grade 5 nuts are suitable for general industrial use, machinery, and structural applications where high strength and moderate corrosion resistance are required. The black oxide finish offers a protective layer against rust in non-severe environments, making these nuts ideal for automotive, construction, and equipment assembly.
How are these nuts packaged, and what is the minimum order quantity?
These hex nuts are packaged in bulk boxes with a standard quantity of 1000 pieces per box. We ship full boxes only to ensure packaging integrity and accurate count, and pricing is typically offered per box or in pallet quantities for larger volume orders.
5/16-18 Grade 5 Alloy Steel Hex Nut, Black Oxide, 1" Flats, Pkg Qty 1000 | Machrio