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SKU: HNA563A-38

Conquest 3/8"-16 Heavy Hex Nut, A563 Grade A - Plain Finish

Conquest 3/8"-16 Heavy Hex Nut, A563 Grade A - Plain Finish!

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SKU: HNA563A-38

Conquest 3/8"-16 Heavy Hex Nut, A563 Grade A - Plain Finish

$0.11
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Ships Jun 22 when you order now

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Specifications

Diameter: 3/8"
Thickness: Basic: 23/64" Max: 0.377" Min: 0.341"
Thread Type: Coarse
Threads Per Inch: 16
Wrench Size: 11/16"
Material: Carbon Steel
Finish: Plain
Type: A563 Grade A
Manufacturer Name: Conquest Fasteners
Quantity: 1
Description

3/8"-16 Conquest Heavy Hex Nut, A563 Grade A – Plain Finish

The 3/8"-16 Conquest Heavy Hex Nut is a rugged, medium carbon steel fastener designed for non-critical, general-purpose fastening. Built to ASTM A563 Grade A specifications and featuring a plain finish, this heavy hex nut is a cost-effective option for utility hardware, fabrication, and construction projects that require added strength and load distribution.

Reliable Heavy Hex Nut for Framing, Utility, and Fabrication Work

With a 3/8" diameter and coarse 16 TPI thread, this nut provides secure fastening and enhanced torque grip. Its oversized hex body delivers more surface contact, making it ideal for bolting applications with A307 or Grade 55 threaded rod, anchor bolts, or hex bolts. Commonly used in utility framing, machinery mounting, or light-structural connections, this uncoated nut is easy to weld and ideal for indoor or controlled-use environments.

Key Features

  • Material: Made from carbon steel with a plain (uncoated) finish.
  • Thread Type/TPI: Coarse thread with 16 TPI for strong grip and compatibility.
  • Heavy Hex Design: Larger dimensions improve clamping force and distribute stress.
  • Finish: Plain finish supports welding and use in interior environments.
  • Standard Compliance: Manufactured to ASTM A563 Grade A standards.

Applications

  • General framing and bracing in construction
  • Utility hardware and bolt-up assemblies
  • Fabrication and steel erection
  • Weldable fastener systems
  • DIY and repair projects requiring heavy-duty nuts

Installation Tips

  • Pair with 3/8"-16 bolts or threaded rods for proper thread engagement.
  • Use a heavy-duty wrench or impact socket to ensure secure torque.
  • Clean threads before installation, especially for welding or rework.

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California Residents: WARNING

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× WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects and other reproductive harm. For more information visit: www.P65Warnings.ca.gov.

Customer Reviews

Based on 16 reviews
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A
Anthony Rizzo
Quality, delivery, prices excellent

I recently ordered some nuts, bolts, washers, screws, and ties for a pergola build. Their selection was great, product descriptions thorough, and delivery, and price excellent compared to other online stores and big-box stores. Will be buying from them in the future.

R
Rick Ugale
Nuts

Exactly as described, no problems

C
Customer
Great Service!

Great selection of fastners and great information about them and which one to choose for your application. Fast shipping as well.