Minerallac 55416J Grade 2 Zinc...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$50.40
$0.22
Minerallac 55416J Grade 2 Zinc-Plated Hex Head Bolt, 3/8-16 x 1", Fully Threaded

Minerallac 55416J Grade 2 Zinc-Plated Hex Head Bolt, 3/8-16 x 1", Fully Threaded

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Model: 55416J

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

$50.40
$0.22
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Minerallac 55416J Grade 2 Zinc-Plated Hex Head Bolt, 3/8-16 x 1", Fully Threaded

The Minerallac 55416J is a 3/8-16 x 1" hex head bolt machined from Grade 2 medium carbon steel and finished with a zinc-plated coating for added corrosion resistance. Fully threaded along its entire 1" length with a coarse 16-pitch thread, this bolt offers maximum engagement in tapped holes or nuts and serves as a versatile fastener for general electrical and mechanical assembly work. Backed by documented proof load, tensile load, and yield load ratings, the 55416J delivers dependable mechanical performance for electricians, technicians, and maintenance crews who need consistent, code-compliant hardware on hand. It is supplied in a jar for convenient bench-top or truck-stock storage, making inventory management and dispensing simple in the field or in the shop. Whether used for panel assembly, conduit support fastening, or general equipment mounting, this bolt provides the strength and finish quality that professional installers expect from a hardware component that will see repeated handling and long-term service life in both indoor and light industrial settings.

Key Features

  • Trade Size: 3/8-16 thread with a 1" overall product length for standard fastening applications.
  • Durable Construction: Made of medium carbon steel that is quenched and tempered, then classified as Grade 2 Steel for reliable mechanical strength.
  • Fully Threaded: Coarse thread type runs the full 1" length of the bolt for maximum engagement in tapped holes or nuts.
  • Zinc-Plated Finish: Silver head color with a zinc-plated coating to help resist surface corrosion in everyday use.
  • Head Dimensions: Hex head measures 15/64" in height with a 9/16" head width for standard wrench and socket compatibility.
  • Mechanical Ratings: Rated to a 55,000 PSI proof load, 74,000 PSI MIN tensile load, and 57,000 PSI MIN yield load for demanding fastening applications.
  • Jar Packaging: Supplied in a jar for easy storage, dispensing, and inventory management on the job or in the shop.

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
  • Proof Load: 55,000 PSI
  • Tensile Load: 74,000 PSI MIN
  • Thread Size: 16
  • Thread Type: Coarse
  • Yield Load: 57,000 PSI MIN

Typical Applications

  • Electrical Panel and Enclosure Assembly
  • Conduit and Support Hardware Fastening
  • General Mechanical and Structural Assembly
  • Equipment Mounting and Bracket Fastening
  • Maintenance, Repair, and Stock Replenishment

Why Minerallac?

Minerallac fasteners are manufactured from quenched and tempered medium carbon steel and classified to Grade 2 standards, giving installers a fastener with documented proof load, tensile load, and yield load ratings. The zinc-plated finish provides added corrosion resistance for long-term performance in electrical and mechanical assemblies. Packaged in a jar for easy handling, the 55416J is a practical choice for electricians and technicians who need a dependable, consistently sized hex head bolt for everyday assembly, mounting, and maintenance tasks across panels, conduit supports, and general equipment mounting.

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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 55416J – Frequently Asked Questions

1) What thread and size is the Minerallac 55416J hex bolt, and will it take a standard 3/8-16 nut?
The 55416J is a 3/8-16 x 1 inch hex head bolt with coarse thread, 16 threads per inch. That is the standard UNC coarse pitch for 3/8 inch diameter, so it mates with any standard 3/8-16 nut, coupling nut, or tapped 3/8-16 hole. Shank length is 1 inch under the head.
2) Is a Grade 2 bolt strong enough for hanging strut, conduit and electrical supports?
For routine electrical support work, yes. The 55416J is Grade 2 medium carbon steel, quenched and tempered, rated 55,000 PSI proof load, 57,000 PSI minimum yield and 74,000 PSI minimum tensile. That covers typical strut channel, conduit hanger and box mounting duty. If your drawing calls out a Grade 5 or Grade 8 fastener for a structural or seismic connection, this is not a substitute; order the higher grade instead.
3) Is the 3/8-16 x 1 inch bolt fully threaded all the way to the head?
Yes, it is threaded the full 1 inch of its length with no unthreaded shoulder. That matters when you are clamping through strut, a channel nut, or stacked washers and need thread engagement right up under the head. If you want a smooth shank bearing surface at a pivot or shear joint, a partially threaded cap screw is the better choice.
4) Can I use a zinc plated hex bolt outdoors or in a damp location?
The 55416J carries a zinc plated finish, silver in appearance. Zinc plating is a mild corrosion barrier meant for dry indoor and protected service. For exterior, wet, or corrosive locations, step up to hot dip galvanized or stainless hardware instead of relying on zinc plating.
5) Does the Minerallac hex bolt come with nuts and washers?
No. Model 55416J is the bolt only, supplied in a jar. Order 3/8-16 hex nuts, flat washers and lock washers separately, along with channel nuts if you are mounting into strut.
How fast can I get the Minerallac 55416J 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 55416J come with a warranty?
Absolutely. The Minerallac 55416J 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 55416J?
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 55416J 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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