Minerallac Grade 2 Steel Hex H...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$50.23
$30.00
Minerallac Grade 2 Steel Hex Head Bolt 3/8-16 x 3/4" Zinc Plated Fully Threaded, 100 Pack

Minerallac Grade 2 Steel Hex Head Bolt 3/8-16 x 3/4" Zinc Plated Fully Threaded, 100 Pack

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Model: 55412

In Stock (leaves warehouse same day if ordered before 3pm ET)

$50.23
$30.00
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Minerallac Grade 2 Steel Hex Head Bolt 3/8-16 x 3/4" Zinc Plated Fully Threaded

Professional Grade Fastening Solution for Industrial & Commercial Applications

The Minerallac Grade 2 Steel Hex Head Bolt delivers reliable fastening performance with 3/8-16 threading and 3/4" length construction. Made of medium carbon steel that is quenched and tempered, this fully threaded hex head bolt features zinc plated finish for enhanced corrosion resistance and professional durability in demanding applications.

Professional Features & Benefits

  • Grade 2 Steel Construction: Medium carbon steel material provides optimal strength-to-cost ratio for general purpose fastening applications
  • Quenched & Tempered Process: Heat treatment enhances mechanical properties and ensures consistent performance under load
  • Zinc Plated Finish: Protective coating delivers corrosion resistance and extends service life in various environmental conditions
  • Fully Threaded Design: Complete threading maximizes engagement length and provides secure fastening throughout the bolt length
  • Hex Head Configuration: Standard hex head design enables efficient installation and removal with common tools
  • Precision Threading: 3/8-16 coarse thread specification ensures reliable mating with compatible nuts and threaded components

Technical Specifications

  • Country Of Origin: China
  • Head Color: Silver
  • Head Height: 15/64
  • Head Type: Hex Head
  • Head Width: 16-Sep
  • Product Finish: Zinc Plated
  • Product Length: 3/4 in
  • Product Material: Grade 2 Steel
  • Product Size: 3/8-16 x 3/4
  • Product Type: Hex Cap Bolt
  • Thread Size: 16
  • Thread Type: Coarse

Professional Applications

  • Industrial Equipment Assembly
  • Commercial Construction Projects
  • Machinery Installation & Maintenance
  • Structural Fastening Applications
  • General Purpose Mechanical Connections
  • Equipment Mounting & Securing

Why Choose Minerallac Quality?

Minerallac hex head bolts combine proven Grade 2 steel construction with professional zinc plated finish to deliver dependable fastening performance. The quenched and tempered manufacturing process ensures consistent mechanical properties, while the fully threaded design maximizes versatility across diverse professional applications.

Manufacturer Resources

Product Specs

Country Of Origin:
China
Head Color:
Silver
Head Height:
15/64
Head Type:
Hex Head
Head Width:
16-Sep
Product Finish:
Zinc Plated
Product Length:
3/4 in
Product Material:
Grade 2 Steel
Product Size:
3/8-16 x 3/4
Product Type:
Hex Cap Bolt
Thread Size:
16
Thread Type:
Coarse
Department:
Electrical
Product Subgroup:
Hex Bolts & Nuts

Minerallac 55412 – Frequently Asked Questions

1) What size and thread does the Minerallac 55412 hex bolt have?
The Minerallac 55412 is a 3/8-16 x 3/4 inch hex cap bolt: 3/8 inch diameter with 16 threads per inch coarse thread, and a 3/4 inch length under the head. Coarse thread means it mates with standard 3/8-16 hex nuts and 3/8-16 tapped holes. Anything tapped fine thread (3/8-24) will not accept it.
2) Is a Grade 2 zinc plated bolt strong enough for structural connections?
Grade 2 is a general purpose strength class, and this bolt is Grade 2 steel with a zinc plated finish. It handles equipment mounting, machinery installation, panel and bracket work, and general mechanical connections. If your drawing calls out Grade 5 or Grade 8 for a load bearing or high torque joint, Grade 2 does not substitute for it.
3) Is the 55412 bolt fully threaded or does it have a shoulder?
Fully threaded, right up to the head. At 3/4 inch long there is no unthreaded shank, so you get thread engagement through the entire grip. That is what you want for thin bracket stacks, strut clamps, and equipment mounting where the total material thickness is well under the bolt length. If your application needs a smooth shank bearing surface through a clearance hole, a partially threaded bolt is the right call instead.
4) Can I use these zinc plated hex bolts outdoors or in a damp location?
The zinc plating on the 55412 gives corrosion resistance for general indoor and sheltered use, and it is what keeps the bolt from surface rusting in a mechanical room or on covered exterior equipment. It is a plating, not stainless, so for continuous wet exposure, coastal air, or direct weather, a hot dip galvanized or stainless fastener is the better choice.
5) Does the 55412 come with nuts and washers?
No. The 55412 is bolts only, sold as a 100 piece box of 3/8-16 x 3/4 inch hex cap bolts. Order 3/8-16 coarse hex nuts and 3/8 flat or lock washers separately if the joint needs them. On a tapped hole or a strut channel nut, no additional nut is required.
6) What wrench or socket do I need for this Minerallac hex bolt?
It is a standard hex head in silver zinc, with a head height of 15/64 inch. A standard 3/8-16 hex cap screw takes a 9/16 inch wrench or socket, so one common SAE socket covers every bolt in the box. No special driver or security bit involved.
How fast can I get the Minerallac 55412 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Minerallac 55412 come with a warranty?
Absolutely. The Minerallac 55412 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Minerallac 55412?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Minerallac 55412 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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