Minerallac Self-Tapping Sheet Metal Screws 8 x 1/2" Hex Washer Head Slotted Zinc Plated
Professional Fastening Solutions for Sheet Metal Applications
Minerallac delivers reliable fastening performance with these professional-grade self-tapping sheet metal screws. Featuring 8 x 1/2" sizing with hex washer head design and slotted drive configuration, these zinc plated steel screws provide secure attachment for sheet metal applications. The hex washer head offers enhanced bearing surface and professional appearance while the zinc plated finish ensures corrosion resistance.
Professional Features & Benefits
- 8 x 1/2" Size: Optimal dimensions for standard sheet metal thickness applications with reliable penetration depth
- Hex Washer Head Design: Provides larger bearing surface area to distribute load and prevent pull-through
- Self-Tapping Type-A Thread: Cuts its own threads for efficient installation in sheet metal without pre-drilling
- Slotted Drive System: Compatible with standard slotted screwdrivers for versatile installation options
- Zinc Plated Finish: Corrosion-resistant coating extends service life in various environmental conditions
- Steel Construction: Durable material provides strength and reliability for demanding fastening applications
Technical Specifications
- Country Of Origin: China
- Drive Type: Slotted
- Driver Size: 4-Jan
- Head Color: Silver
- Head Height: 0.272
- Head Type: Hex Washer Head
- Head Width: 0.25
- Product Finish: Zinc Plated
- Product Length: 1/2 in
- Product Material: Steel
- Product Size: 8 x 1/2
- Product Type: Sheet Metal Screw
- Thread Size: 15
- Thread Type: Type-A
Professional Applications
- HVAC Ductwork Assembly
- Electrical Enclosure Mounting
- Metal Building Construction
- Industrial Equipment Assembly
- Commercial Ventilation Systems
- Roofing and Siding Installation
- Maintenance and Repair Operations
Why Choose Minerallac Quality?
Minerallac fasteners deliver consistent performance and reliability for professional applications. The zinc plated finish and steel construction ensure long-lasting durability, while the hex washer head design provides superior holding power and professional installation results.
Manufacturer Resources
Product Specs
- Drive Type:
- Slotted
- Driver Size:
- 4-Jan
- Head Color:
- Silver
- Head Height:
- 0.272
- Head Type:
- Hex Washer Head
- Head Width:
- 0.25
- Product Finish:
- Zinc Plated
- Product Length:
- 1/2 in
- Product Material:
- Steel
- Product Size:
- 8 x 1/2
- Product Type:
- Sheet Metal Screw
- Thread Size:
- 15
- Thread Type:
- Type-A
- Department:
- Electrical
- Product Subgroup:
- Self-Tapping Screws
- Product Group:
- Hangers, Supports & Fasteners
Minerallac 76808J – Frequently Asked Questions
1) Do I need to pre-drill for Minerallac 8 x 1/2 inch self-tapping sheet metal screws?
No pre-drilling needed in sheet metal. The 76808J uses a Type-A thread, which is the coarse, sharp-point sheet metal thread that cuts its own threads as it drives. That is what makes it the standard screw for duct seams and enclosure work where you are driving into thin gauge steel by hand or with a drill.
2) Will a 1/2 inch long sheet metal screw be long enough for HVAC duct seams?
For typical duct and enclosure sheet metal, yes. At 1/2 inch of overall length the 76808J is sized to pass through thin sheet and still get full thread engagement without the point protruding far into the airstream or behind a panel. If you are fastening through insulation, a standoff, or stacked framing members, you want a longer screw instead; 1/2 inch only covers sheet-to-sheet.
3) Can I run a hex driver on these slotted hex washer head sheet metal screws?
Yes, and that is the usual way to install them. The 8 x 1/2 inch Minerallac screw has a hex washer head with a slot cut in it, so you can seat a 1/4 inch hex driver on the head or fall back on a flat blade screwdriver in tight spots where a socket will not fit. The head measures 0.25 inch across with a 0.272 inch height.
4) Are these zinc plated screws OK for outdoor or damp locations?
They are zinc plated steel, which handles indoor humidity, mechanical rooms, and general damp exposure. Zinc plating is a corrosion-resistant coating, not stainless, so for constant weather exposure, coastal air, or roofing left open to the elements, a stainless or coated exterior fastener is the better call. Interior duct runs, panel and enclosure mounting, and equipment assembly are where this one belongs.
5) Can I use a #8 self-tapping sheet metal screw to mount an electrical enclosure or strut accessory?
Yes for mounting into sheet metal boxes, panels, and enclosure flanges, which is one of the intended uses for the #8 x 1/2 inch Minerallac screw. What it is not is a concrete, masonry, or wood fastener, and the Type-A thread is cut for thin sheet rather than thick plate or structural steel. For thicker steel you want a self-drilling Type-B or a tapped machine screw instead.
6) What part number do I order for Minerallac 8 x 1/2 inch hex washer head sheet metal screws?
Order Minerallac 76808J. That is the 8 x 1/2 inch self-tapping sheet metal screw, hex washer head, slotted drive, zinc plated steel, Type-A thread. Country of origin is China.
How fast can I get the Minerallac 76808J delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 76808J come with a warranty?
Absolutely. The Minerallac 76808J 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 76808J?
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