Minerallac #14 x 1-1/2" Sheet ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$51.43
Minerallac #14 x 1-1/2" Sheet Metal Screws with Hex Washer Head, Slotted Drive, Zinc Plated Steel, 100 Pack

Minerallac #14 x 1-1/2" Sheet Metal Screws with Hex Washer Head, Slotted Drive, Zinc Plated Steel, 100 Pack

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Model: 77424J

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

$51.43
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Minerallac #14 x 1-1/2" Sheet Metal Screws with Hex Washer Head, Slotted Drive, Zinc Plated Steel

Professional Fastening Solutions for Sheet Metal Applications

Minerallac delivers reliable fastening performance with these #14 x 1-1/2" sheet metal screws featuring hex washer head design and slotted drive configuration. Constructed from durable steel with zinc plated finish for corrosion resistance, these Type-A thread screws provide secure attachment for sheet metal applications with professional-grade reliability.

Professional Features & Benefits

  • #14 x 1-1/2" Size: Optimal dimensions for secure fastening in sheet metal applications with proper thread engagement and holding power.
  • Hex Washer Head Design: Provides increased bearing surface and torque distribution while preventing pull-through in thin materials.
  • Slotted Drive System: Compatible with standard slotted drivers for versatile installation using common tools and equipment.
  • Zinc Plated Steel Construction: Combines steel strength with zinc coating for enhanced corrosion resistance and extended service life.
  • Type-A Thread Configuration: Self-tapping thread design creates secure engagement in sheet metal without pre-drilling requirements.
  • Silver Head Color: Professional appearance that blends with galvanized and zinc-coated materials for clean installations.

Technical Specifications

  • Country Of Origin: China
  • Drive Type: Slotted
  • Driver Size: 8-Mar
  • Head Color: Silver
  • Head Height: 0.409
  • Head Type: Hex Washer Head
  • Head Width: 0.375
  • Product Finish: Zinc Plated
  • Product Length: 1-1/2 in
  • Product Material: Steel
  • Product Size: 14 x 1-1/2
  • Product Type: Sheet Metal Screw
  • Thread Size: 10
  • Thread Type: Type-A

Professional Applications

  • HVAC Ductwork Assembly and Repair
  • Electrical Enclosure and Panel Installation
  • Metal Roofing and Siding Applications
  • Industrial Equipment Housing Assembly
  • Commercial Building Maintenance
  • Automotive and Transportation Industries
  • General Sheet Metal Fabrication

Why Choose Minerallac Quality?

Minerallac sheet metal screws deliver consistent performance with precision-manufactured steel construction and protective zinc plating. The hex washer head design and Type-A threading provide reliable fastening solutions for professional applications requiring durable, corrosion-resistant hardware.

Manufacturer Resources

Product Specs

Drive Type:
Slotted
Driver Size:
8-Mar
Head Color:
Silver
Head Height:
0.409
Head Type:
Hex Washer Head
Head Width:
0.375
Product Finish:
Zinc Plated
Product Length:
1-1/2 in
Product Material:
Steel
Product Size:
14 x 1-1/2
Product Type:
Sheet Metal Screw
Thread Size:
10
Thread Type:
Type-A
Department:
Electrical
Product Subgroup:
Self-Tapping Screws
Product Group:
Hangers, Supports & Fasteners

Minerallac 77424J – Frequently Asked Questions

1) Do I need to pre-drill before driving a #14 x 1-1/2 inch Minerallac sheet metal screw into duct or a metal enclosure?
No pilot hole is needed in sheet metal. The Minerallac 77424J uses a Type-A thread, which is the self-tapping sharp-point thread that cuts its own hole in thin gauge steel as you drive it. For thicker stock or heavily galvanized material a pilot hole still helps start it straight, but on standard duct and enclosure sheet it drives direct.
2) Will a hex washer head screw pull through thin gauge duct?
That is exactly what the washer head is there to prevent. The flange under the hex gives a wider bearing surface against the sheet, so the head seats on the metal instead of dishing through it, and the torque spreads out rather than concentrating at the hole. For thin gauge duct, siding, or panel skins that is the head style you want over a flat or pan head.
3) Are zinc plated steel screws OK for outdoor metal roofing and siding?
Zinc plated steel gives moderate corrosion resistance, fine for dry interior duct, enclosures, and equipment housings, and for protected exterior work. For permanently exposed roofing in a wet or coastal environment, or anywhere in contact with treated lumber, step up to hot dip galvanized or stainless instead. Zinc plating is a thin electroplated coating, not a hot dip barrier.
4) How much material can a 1-1/2 inch sheet metal screw actually hold together?
Overall length is 1-1/2 inches, measured from under the washer head to the point, so the usable grip is that 1-1/2 inches minus whatever you need engaged in the back material. In practice it handles stacked sheet, a strap or clip over duct, or fastening through a layer of insulation or trim into metal behind. If you only have thin sheet on thin sheet, a shorter screw leaves less point sticking out the back.
5) Is the Minerallac 77424J screw sold loose or in a jar, and how many come in it?
Model 77424J is the 100 piece jar of #14 x 1-1/2 inch hex washer head sheet metal screws. The jar packaging suits a service van or a shop bench where you are pulling a handful at a time rather than ordering bulk boxes for a single large install.
6) Can I use these screws to mount electrical enclosures and panels, or are they only for HVAC duct?
Both are listed uses. The #14 x 1-1/2 inch zinc plated screws are used for electrical enclosure and panel mounting, HVAC ductwork assembly and repair, metal roofing and siding, equipment housings, and general sheet metal fabrication. The silver zinc head also blends with galvanized strut, duct, and panel surfaces, which matters on visible MRO repairs.
How fast can I get the Minerallac 77424J 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 77424J come with a warranty?
Absolutely. The Minerallac 77424J 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 77424J?
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 77424J 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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