Minerallac Grade 2 Steel Hex H...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$50.31
$31.43
Minerallac Grade 2 Steel Hex Head Bolt 1/4"-20 x 1-1/2" Zinc Plated Partial Thread, 100 Pack

Minerallac Grade 2 Steel Hex Head Bolt 1/4"-20 x 1-1/2" Zinc Plated Partial Thread, 100 Pack

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Model: 55024J

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

$50.31
$31.43
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Minerallac Grade 2 Steel Hex Head Bolt 1/4"-20 x 1-1/2" Zinc Plated Partial Thread

Professional Grade Fastening Solution with Corrosion Protection

The Minerallac Grade 2 Steel Hex Head Bolt delivers reliable fastening performance for professional applications. Constructed from medium carbon steel that is quenched and tempered for enhanced strength, this 1/4"-20 x 1-1/2" bolt features zinc plating for corrosion resistance and partial threading for versatile installation requirements. The hex head design provides secure grip and efficient installation with standard tools.

Professional Features & Benefits

  • Grade 2 Steel Construction: Medium carbon steel material quenched and tempered provides superior strength and durability for demanding applications
  • 1/4"-20 x 1-1/2" Dimensions: Standard sizing ensures compatibility with common hardware and provides optimal length for various fastening needs
  • Zinc Plated Finish: Protective coating resists corrosion and extends service life in indoor and outdoor environments
  • Hex Head Design: Six-sided head configuration allows for secure tool engagement and efficient installation with standard wrenches
  • Partial Threading: Strategic thread placement optimizes clamping force distribution and reduces installation time
  • Coarse Thread Pattern: 20 threads per inch provide strong holding power and reliable engagement in standard applications

Technical Specifications

  • Country Of Origin: China
  • Head Color: Silver
  • Head Height: May-32
  • Head Type: Hex Head
  • Head Width: 16-Jul
  • Product Finish: Zinc Plated
  • Product Length: 1-1/2 in
  • Product Material: Grade 2 Steel
  • Product Size: 1/4"-20 x 1-1/2
  • Product Type: Hex Cap Bolt
  • Thread Size: 20
  • Thread Type: Coarse

Professional Applications

  • Structural Steel Assembly and Connection
  • Mechanical Equipment Mounting and Securing
  • Industrial Machinery Installation and Maintenance
  • Construction and Building Framework Applications
  • Automotive and Transportation Equipment Fastening
  • General Purpose Professional Fastening Requirements

Why Choose Minerallac Quality?

Minerallac delivers consistent performance through precision manufacturing and quality materials. The Grade 2 steel construction with zinc plated finish ensures reliable service life, while the hex head design and coarse threading provide professional-grade fastening capability for demanding applications.

Manufacturer Resources

Product Specs

Head Color:
Silver
Head Height:
May-32
Head Type:
Hex Head
Head Width:
16-Jul
Product Finish:
Zinc Plated
Product Length:
1-1/2 in
Product Material:
Grade 2 Steel
Product Size:
1/4"-20 x 1-1/2
Product Type:
Hex Bolt
Thread Size:
20
Thread Type:
Coarse
Department:
Electrical
Product Subgroup:
Hex Bolts & Nuts
Product Group:
Hangers, Supports & Fasteners

Minerallac 55024J – Frequently Asked Questions

1) What nut and wrench size do I need for a Minerallac 1/4-20 hex bolt?
It takes a standard 1/4-20 coarse-thread nut. The thread is 20 threads per inch on a 1/4 inch diameter shank, so any UNC 1/4-20 hex nut, flange nut, or tapped 1/4-20 hole will take it. Pair it with a zinc plated nut and washer if you want the corrosion protection to match the bolt's zinc plated finish.
2) Is a Grade 2 bolt strong enough, or do I need Grade 5 or Grade 8?
Grade 2 is the general-purpose strength class. It is fine for equipment mounting, strut and framework assembly, enclosure and bracket work, and the kind of light mechanical fastening this 1/4-20 size is normally used for. If the drawing calls out a torque spec or a structural connection carrying real load, specify Grade 5 or Grade 8 instead, since those are higher tensile classes and a Grade 2 will not substitute for them.
3) Can zinc plated hex bolts be used outdoors?
Zinc plating gives sacrificial corrosion protection and handles exterior exposure, covered rooftop work, and damp interiors. It is not stainless. In coastal salt air, chemical exposure, or anything continuously wet or submerged, go to a stainless or hot dip galvanized fastener instead, since plated zinc will eventually surface rust in those conditions.
4) How many bolts come in the Minerallac 55024J?
Model 55024J ships as a 100 piece jar of 1/4-20 x 1-1/2 inch hex head bolts. The jar packaging is handy for a van or a shop bin where loose bolts in a bag get lost. Nuts and washers are not part of it, so order those separately.
5) What is the difference between a partially threaded and fully threaded 1/4-20 bolt?
On this one, threads run only part of the 1-1/2 inch length and the rest is a smooth shank. That shank bears against the hole in a joint loaded sideways, which is why partial thread is the usual pick for machinery and structural bracket mounting. A fully threaded bolt is the better choice when you are threading into a tapped blind hole or when the material stack is thin and you need engagement all the way to the head.
6) Will this hex bolt work in strut channel and electrical equipment mounting?
1/4-20 is one of the standard sizes for channel nuts, device mounting, enclosure feet, and light hanger work, and this is a 1/4-20 coarse hex cap bolt with a zinc plated finish suited to that. The hex head takes a standard wrench or socket rather than a driver bit, so it tightens down without cam-out on overhead work.
How fast can I get the Minerallac 55024J 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 55024J come with a warranty?
Absolutely. The Minerallac 55024J 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 55024J?
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 55024J 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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