Minerallac 55416-1000 Grade 2 ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$371.43
Minerallac 55416-1000 Grade 2 Zinc-Plated 3/8-16 x 1" Hex Head Bolt, 1000-Pack

Minerallac 55416-1000 Grade 2 Zinc-Plated 3/8-16 x 1" Hex Head Bolt, 1000-Pack

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Model: 55416-1000

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

$371.43
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Minerallac 55416-1000 Grade 2 Zinc-Plated 3/8-16 x 1" Hex Head Bolt, 1000-Pack

The Minerallac 55416-1000 is a 3/8-16 x 1" hex head bolt, fully threaded and manufactured from Grade 2 medium carbon steel for dependable mechanical fastening in electrical and industrial installations. Each bolt is quenched and tempered and finished with a zinc-plated coating for corrosion resistance during storage and use. This bolt ships in a bulk box of 1000 pieces, making it well suited for contractors and facilities that need a consistent, ready supply of standard hex bolts on hand for panel, enclosure, and equipment mounting tasks. With a coarse 3/8-16 thread and a full 1" threaded shank, this hex head bolt delivers a versatile fastening solution wherever a Grade 2 mechanical bolt is specified, and its defined proof, tensile, and yield ratings make it suitable for professional installation work where consistent holding performance matters. Whether you are securing conduit supports, mounting electrical enclosures, or assembling general industrial hardware, the 55416-1000 provides a dependable, code-appropriate fastening solution backed by clear mechanical specifications.

Key Features

  • Trade Size: 3/8-16 thread size with a 1" product length for standard hex bolt applications.
  • Fully Threaded Shank: Coarse 3/8-16 threading runs the full length of the bolt for maximum engagement in tapped holes and nuts.
  • Durable Construction: Grade 2 medium carbon steel, quenched and tempered, provides reliable mechanical strength for electrical and industrial fastening.
  • Finish: Zinc-plated with a silver head color for added corrosion resistance in typical indoor and job-site environments.
  • Head Dimensions: Hex head with a head height of 15/64" and head width of 9/16" for standard wrench and socket compatibility.
  • Mechanical Ratings: Proof load of 55,000 PSI, tensile load of 74,000 PSI MIN, and yield load of 57,000 PSI MIN for dependable holding performance.
  • Bulk Packaging: Supplied in a box of 1000 pieces for job-site efficiency and inventory stocking, reducing the need for frequent reordering.

Technical Specifications

  • Country Of Origin: China
  • Head Color: Silver
  • Head Height: 15/64"
  • Head Width: 9/16"
  • Product Length: 1 in
  • Product Material: Grade 2 Steel
  • Product Type: Hex Cap Bolt
  • Product Finish: Zinc Plated
  • Proof Load: 55,000 PSI
  • Tensile Load: 74,000 PSI MIN
  • Thread Size: 3/8-16
  • Thread Type: Coarse
  • Yield Load: 57,000 PSI MIN

Typical Applications

  • Electrical Panel and Enclosure Mounting
  • Support Bracket and Hardware Assembly
  • General Industrial and Commercial Fastening
  • Equipment and Conduit Support Installations
  • New Construction and Maintenance Repair Work

Why Minerallac?

Minerallac's 55416-1000 hex head bolt is built from quenched and tempered Grade 2 medium carbon steel with a zinc-plated finish, giving installers a fastener that holds up to demanding electrical and industrial applications. Backed by defined proof, tensile, and yield load ratings, this bolt delivers consistent, code-appropriate performance for professional fastening needs, and the 1000-pack format keeps crews stocked without frequent reordering on panel, enclosure, and equipment mounting projects.

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Manufacturer Resources

Product Specs

Head Color:
Silver
Head Height:
15/64
Head Type:
Hex Head
Head Width:
16-Sep
Product Finish:
Zinc Plated
Product Length:
1 in
Product Material:
Grade 2 Steel
Product Size:
3/8-16 x 1
Product Type:
Hex Bolt
Proof Load:
55,000 PSI
Shear Strength:
Not available for "Low Carbon
Tensile Load:
74,000 PSI MIN
Thread Size:
16
Thread Type:
Coarse
Yield Load:
57,000 PSI MIN
Department:
Electrical
Product Subgroup:
Hex Bolts & Nuts
Product Group:
Hangers, Supports & Fasteners

Minerallac 55416-1000 – Frequently Asked Questions

1) Is the Minerallac 55416-1000 bolt threaded all the way to the head?
Yes, the 3/8-16 x 1 inch bolt is fully threaded, with coarse thread running the full 1 inch length. That gives you full engagement in a tapped hole or nut at any grip thickness up to the usable length, which is what you want on thin sheet steel enclosures and strut fittings where there is no room for an unthreaded shank.
2) Will a 3/8-16 hex bolt thread into standard strut channel nuts and 3/8 inch tapped electrical hardware?
3/8-16 is the standard UNC coarse pitch for 3/8 inch fasteners, so this bolt mates with any 3/8-16 coarse nut, channel nut, or tapped 3/8 inch hole. If the hardware on your job is 3/8-24 fine thread, this is the wrong bolt.
3) How much load will a Grade 2 zinc-plated 3/8-16 bolt hold?
Rated at 55,000 PSI proof load, 74,000 PSI minimum tensile, and 57,000 PSI minimum yield. That covers enclosure mounting, bracket assembly, and conduit support hangers. For structural connections or anything called out as Grade 5 or Grade 8 on the drawing, Grade 2 does not substitute.
4) What size wrench or socket do I need for the Minerallac 55416-1000 hex bolt?
The hex head measures 9/16 inch across the flats, so a standard 9/16 inch wrench or socket drives it. Head height is 15/64 inch, which matters if you are working in a shallow counterbore or under a tight bracket flange.
5) Is a zinc-plated hex bolt OK for outdoor or wet-location electrical work?
Zinc plating on these Grade 2 bolts is a corrosion-resistant coating for storage and typical indoor and job-site use. For sustained outdoor exposure, wet locations, or coastal and corrosive atmospheres, specify hot-dip galvanized or stainless instead.
6) How many bolts come in the Minerallac 55416-1000 box?
It is a bulk box of 1,000 pieces, all one size at 3/8-16 x 1 inch. That is a stocking quantity for a shop crib or a truck, not a small job pack, so order it where you are consistently pulling 3/8 inch hex bolts for panel and equipment mounting.
How fast can I get the Minerallac 55416-1000 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 55416-1000 come with a warranty?
Absolutely. The Minerallac 55416-1000 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 55416-1000?
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 55416-1000 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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