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Black Oxide Grade 8.8 Carbon Steel Square Head Bolt & Nut Kit, 1.77 in, Pkg Qty 24

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Industrial · SKU: AE9044014

Black Oxide Grade 8.8 Carbon Steel Square Head Bolt & Nut Kit, 1.77 in, Pkg Qty 24

This industrial-grade square head bolt and nut kit is manufactured from Grade 8. 8 carbon steel for high tensile strength and durability.

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$179.99
$7.50/each(24 pcs/pkg)

Volume Pricing - Buy More, Save More

QuantityDiscountUnit Price
1 - 10-$179.99
11 - 50-5%$170.99
51+-10%$161.99
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Quick Answer

How Buyers Should Evaluate Black Oxide Grade 8.8 Carbon Steel Square Head Bolt & Nut Kit, 1.77 in, Pkg Qty 24

This industrial-grade square head bolt and nut kit is manufactured from Grade 8. 8 carbon steel for high tensile strength and durability. 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: 8.8
  • Material: Carbon Steel

Purchase Details

  • Online price starts at $179.99.
  • Minimum order quantity: 1 unit.
  • Pack quantity: 24 / 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/Class8.8
MaterialCarbon Steel
Thread SizeM30
FinishBlack Oxide
Width Across Flats1.77 in
Product Details

Full Description

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

Overview

This industrial-grade square head bolt and nut kit is engineered for demanding fastening applications where high tensile strength and reliable torque application are critical. Manufactured from Grade 8.8 carbon steel, each component is built to withstand significant stress and load. The black oxide finish offers a foundational layer of corrosion resistance for general industrial environments. The distinctive square head design provides a positive grip for wrenches, making it ideal for situations where a flush or low-clearance fit is required, or where traditional hex heads are not suitable.

Key Features

Constructed from high-strength Grade 8.8 carbon steel Protective black oxide finish for corrosion resistance 1.77-inch square head design for secure wrenching and low-clearance applications Includes one matching nut per bolt for immediate assembly Pre-packaged for convenience in a 24-piece kit

Specifications

Material: Carbon Steel Material Grade: 8.8 Thread Size: M30 Bolt Length: 7.09 inches Head Dimensions: 1.77 inches by 1.77 inches Head Height: 0.79 inches Finish: Black Oxide Package Quantity: 24 kits (each kit includes one bolt and one nut)

Applications

Heavy-duty machinery assembly and repair Structural steel framing and construction Jig and fixture manufacturing Agricultural equipment maintenance Industrial conveyor system fabrication General fabrication in welding and machine shops

Frequently Asked Questions

What are the exact dimensions and specifications of the bolt and nut in this kit?
Each kit contains one M30 bolt with a length of 7.09 inches (180mm) and a square head measuring 1.77 x 1.77 x 0.79 inches (45x45x20mm), paired with one nut. The fasteners are made from Grade 8.8 carbon steel with a black oxide finish for corrosion resistance.
What are the typical applications for these heavy-duty square head bolts?
These bolts are designed for heavy machinery, structural framing, and industrial equipment assembly where a high-strength, non-slip connection is required. The square head provides a secure grip for wrenches in tight spaces and high-torque applications.
How are these bolt kits packaged and what is the minimum order quantity?
The product is sold in a bulk package containing 24 individual bolt-and-nut kits. This packaging is designed for industrial users and project-based procurement, ensuring you have a sufficient quantity for production or maintenance tasks.