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1/4″-20 x 1″ Galvanized Hex Bolt | ASTM A307 Grade A

Price range: $4.00 through $96.80

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Description


Great for Wood or Metal Fastening Applications

This 1/4″-20 x 1” Hex Head Bolt (Grade A307, Galvanized) is a durable, fully threaded fastener ideal for both residential and commercial construction applications. Designed with a coarse 20 TPI thread and a strong zinc-plated steel body, it offers excellent grip strength and corrosion resistance. Whether you’re securing wood, metal, or machinery parts, this bolt delivers reliable performance and easy installation using a 7/16″ wrench. Perfect for general-purpose use, it ensures quick disassembly for repairs and long-term durability.


Specs

  • Material: Steel
  • Finish: Zinc Plated (Electro Galvanized)
  • Grade: A307
  • Fastener Size: 1/4″
  • Fastener Length: 1″
  • Total Length: 1-11/64″
  • Head Dimensions: 7/16″ Dia x 11/64″ H
  • Threads Per Inch (TPI): 20
  • Thread Style: Coarse
  • Thread Coverage: Fully Threaded
  • Weight: 0.02 lbs
  • Packaging: 100 pcs/bag, 2000 pcs/box

Features

  • Reliable Strength: Made from Grade A307 steel for consistent, general-purpose performance
  • Maximum Holding Power: Fully threaded design provides superior grip in a variety of materials
  • Secure Fit: Coarse 20 TPI threading ensures strong, vibration-resistant connections
  • Corrosion Resistance: Zinc plated (electro-galvanized) coating protects against rust and wear (not compatible with ACQ pressure treated wood)
  • Easy Installation: Hex head design works with a standard 7/16″ wrench or socket
  • Versatile Use: Ideal for fastening metal or wood in construction, repairs, and machinery setups

FAQ

Is this bolt fully threaded?

Yes, it is fully threaded for maximum grip and holding strength.

What wrench size is needed to install this bolt?

A 7/16″ wrench or socket fits the hex head perfectly.

Can this bolt be used outdoors?

While generally recommended for indoor use, the zinc plating does provide protection against rust and corrosion making it suitable for outdoor applications. Please note, that these bolts are not suitable for use with pressure treated lumber.

Are these hex bolts zinc plated or galvanized?

These hex bolts are zinc plated which is also known as electro galvanized, which is not to be confused with hot dipped galvanized.

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Additional information

Quantity (click drop-down for price breaks)

Sample – $6, 100 pcs – $0.27 each, 200 pcs – $0.17 each, 400 pcs – $0.11 each, 1000 pcs – $0.08 each, 2500 pcs – $0.07 each, 3500 pcs – $0.07 each, 7000 pcs – $0.07 each, 35,000 pcs – $0.07 each

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