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Grade 8 Carbon Steel M45 Hex Nut, Black Oxide, 1.772 in, Pkg Qty 12

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Industrial · SKU: AA0220352

Grade 8 Carbon Steel M45 Hex Nut, Black Oxide, 1.772 in, Pkg Qty 12

This Grade 8 carbon steel hex nut is designed for high-strength structural and machinery applications. The black oxide finish provides a durable layer of corrosion resistance.

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$79.99
$6.67/each(12 pcs/pkg)

Volume Pricing - Buy More, Save More

QuantityDiscountUnit Price
1 - 10-$79.99
11 - 50-5%$75.99
51+-10%$71.99
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Quick Answer

How Buyers Should Evaluate Grade 8 Carbon Steel M45 Hex Nut, Black Oxide, 1.772 in, Pkg Qty 12

This Grade 8 carbon steel hex nut is designed for high-strength structural and machinery applications. The black oxide finish provides a durable layer of corrosion resistance. 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: Metric
  • Material Grade/Class: Grade 8
  • Material: Carbon Steel

Purchase Details

  • Online price starts at $79.99.
  • Minimum order quantity: 1 unit.
  • Pack quantity: 12 / 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 MeasurementMetric
Material Grade/ClassGrade 8
MaterialCarbon Steel
Thread SizeM45
FinishBlack Oxide
Width Across Flats1.772 in
Product Details

Full Description

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

Overview

This Grade 8 carbon steel hex nut is engineered for critical, high-strength bolted connections in structural and heavy machinery applications. Manufactured to the GB6170 standard, it provides a reliable and standardized solution for demanding industrial and construction projects. The black oxide finish offers a durable, cost-effective layer of protection against corrosion, extending the component's service life in various environments. Each unit is precision-formed to ensure consistent thread engagement and clamping force.

Key Features

Manufactured from high-strength Grade 8 carbon steel Black oxide finish for enhanced corrosion resistance Conforms to the dimensional specifications of the GB6170 standard Precision-cut threads for secure, reliable fastening Designed for use with matching Grade 8 bolts and studs

Specifications

System of Measurement: Metric Material Grade/Class: Grade 8

Material

Carbon Steel Thread Size: M45 Finish: Black Oxide Width Across Flats: 1.772 inches Package Quantity: 12 units

Applications

Heavy structural steel framing and construction Industrial machinery assembly and maintenance Infrastructure projects including bridges and heavy equipment Manufacturing of agricultural and mining equipment Any application requiring a high-strength, metric-threaded fastener

Frequently Asked Questions

What are the key specifications for this hex nut, and what does 'Grade 8' mean?
This is a metric (M45) hex nut made from carbon steel with a black oxide finish. 'Grade 8' indicates a high tensile strength of approximately 150,000 PSI, making it suitable for demanding structural and machinery applications. The nut's width across the flats is 1.772 inches.
What are the typical applications for a Grade 8, M45 hex nut?
This high-strength nut is designed for heavy-duty fastening in construction, industrial machinery, and large-scale structural assemblies. Its M45 thread size and Grade 8 rating make it ideal for critical connections requiring high clamp loads and vibration resistance, such as in large presses, heavy equipment frames, or structural steelwork.
How is this product packaged and sold?
This hex nut is sold in a convenient package quantity of 12 units. The black oxide finish provides a degree of corrosion resistance for indoor use or in controlled environments, and the packaging is designed to protect the parts during shipping and storage.
Grade 8 Carbon Steel M45 Hex Nut, Black Oxide, 1.772 in, Pkg Qty 12 | Machrio