Metallics Self-Piercing Sheet ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$117.06
$60.63
Metallics QKK1 Screws 8 Hx Sl S-Pt TS Kit St-zn (Trey 1)

Metallics Self-Piercing Sheet Metal Screw Kit #8 Hex/Slotted Sharp Point 500-Piece Steel Zinc Plated

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Model: QKK1
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$117.06
$60.63
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Metallics Self-Piercing Sheet Metal Screw Kit #8 Hex/Slotted Sharp Point 500-Piece Steel Zinc Plated

Professional Self-Piercing Fastener Solution for Thin Metal Applications

The Metallics Self-Piercing Sheet Metal Screw Kit delivers reliable fastening performance for electrical, HVAC, and plumbing contractors working with thin metal applications. This comprehensive 500-piece kit features #8 hex/slotted head screws with sharp point design, manufactured from AISI 1018-1022 steel with zinc plating for corrosion resistance. The kit includes multiple lengths: 200 pieces of 1/2", 50 pieces of 3/4", 100 pieces of 1", and 50 pieces of 1-1/2" screws, providing versatility for various project requirements.

Professional Features & Benefits

  • Self-Piercing Design: Eliminates need for pre-drilled or pre-punched holes, reducing installation time and labor costs.
  • Twin Lead Thread Technology: Reduces driving torque for easier installation and prevents material damage during fastening.
  • Hex/Slotted Drive: Dual drive options provide flexibility for different tools and installation scenarios.
  • Sharp Point Configuration: Extra sharp point with undercut area beneath head allows greater thread engagement for secure connections.
  • Steel Construction with Zinc Plating: AISI 1018-1022 steel provides strength while zinc finish offers corrosion protection.
  • Rockwell C28-38 Hardness: Optimal hardness rating ensures durability without brittleness for reliable performance.
  • 500-Piece Kit Assortment: Multiple lengths in convenient tray packaging for comprehensive project coverage.

Technical Specifications

  • Arra Compliant: N
  • Buy American Compliant: No
  • Country Of Origin: MUL
  • Department: Electrical
  • Division: Electrical H1
  • Drive Type: Hex/Slotted
  • Fastener Head Height: 0.096 - 0.11 in.
  • Fastener Head Type: Hex
  • Fastener Head Width: 0.244 - 0.25 in.
  • Field Application: Plumbing, HVAC & Electrical Contractor
  • Hardness: Rockwell C28-38
  • Height: 1.25 in
  • Language Code: EN
  • Material: Steel
  • Material Standard: AISI 1018 - 1022
  • Neurspe: https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Hex_Head_Slot_Sharp_Pt_Self_Pierce_TS.pdf
  • Number Of Pieces: 500
  • Order Minimum Imperial: 1
  • Order Minimum Uom Imperial: EA
  • Pack Type: Tray
  • Product Details: Self-Piercing Sheet Metal Screw Kit
  • Product Family: Electrical Supplies
  • Product Finish: Zinc
  • Product Group: Fasteners
  • Product Height: 31.75 MM
  • Product Length: 8 in
  • Product Subgroup: Screws
  • Product Type: Self-Piercing Sheet Metal Screw Kit
  • Product Weight: 1012 g
  • Product Width: 117.348 MM
  • Screw Point Type: Sharp Point
  • Series: JQK
  • Slot Depth: 0.052 - 0.074
  • Slot Width: 0.045 - 0.054
  • Sub Division: Electrical-E H2
  • Thread Per Inch: 15
  • Type2: Self-Piercing Sheet Metal Screw Kit
  • Washer Od: 0.322 - 0.348 in.
  • Washer Thickness: 0.019 - 0.031 IN
  • Weight: 2.23 lbs
  • Width: 4.62 in

Professional Applications

  • Electrical Panel and Enclosure Assembly
  • HVAC Ductwork and Equipment Installation
  • Plumbing System Component Mounting
  • Commercial Building Maintenance
  • Industrial Equipment Fabrication
  • Contractor Service and Repair Work
  • Thin Metal Joining Applications

Why Choose Metallics Quality?

Metallics delivers professional-grade fastening solutions engineered for demanding contractor applications. This self-piercing screw kit combines proven steel construction with zinc corrosion protection, ensuring reliable performance in electrical, HVAC, and plumbing installations. The comprehensive 500-piece assortment and convenient tray packaging provide the versatility and organization professionals demand for efficient project completion.

Manufacturer Resources

Product Specs

Arra Compliant:
N
Buy American Compliant:
No
Division:
Electrical H1
Drive Type:
Hex/Slotted
Fastener Head Height:
0.096 - 0.11 in.
Fastener Head Type:
Hex
Fastener Head Width:
0.244 - 0.25 in.
Field Application:
Plumbing, HVAC & Electrical Contractor
Hardness:
Rockwell C28-38
Language Code:
EN
Material Standard:
AISI 1018 - 1022
Neurspe:
https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Hex_Head_Slot_Sharp_Pt_Self_Pierce_TS.pdf
Number Of Pieces:
500
Order Minimum Imperial:
1
Order Minimum Uom Imperial:
EA
Pack Type:
Tray
Product Group:
Fasteners
Product Height:
1.25 in
Product Length:
8 in
Product Weight:
2.23 lbs
Product Width:
4.62 in
Screw Point Type:
Sharp Point
Slot Depth:
0.052 - 0.074
Slot Width:
0.045 - 0.054
Sub Division:
Electrical-E H2
Thread Per Inch:
15
Washer Od:
0.322 - 0.348 in.
Washer Thickness:
0.019 - 0.031 IN
Department:
Electrical
Product Subgroup:
Screws
Product Type:
Self-Piercing Sheet Metal Screw Kit
Type2:
Self-Piercing Sheet Metal Screw Kit
Series:
JQK
Product Finish:
Zinc
Product Details:
Self-Piercing Sheet Metal Screw Kit
Product Material:
Steel

Metallics QKK1 – Frequently Asked Questions

1) What lengths and quantities come in the Metallics QKK1 500-piece sheet metal screw kit?
The Metallics QKK1 kit holds 500 #8 self-piercing screws split across four lengths: 200 pieces at 1/2 inch, 50 at 3/4 inch, 100 at 1 inch, and 50 at 1-1/2 inch. It ships in a tray, and the order minimum is one kit.
2) Do I need to pre-drill before driving these #8 self-piercing screws into sheet metal?
No pre-drilling or pre-punching. The sharp point pierces thin metal on its own, and the twin lead thread cuts driving torque so the panel is less likely to dimple or tear. That is the point of a self-piercing screw versus a standard sheet metal screw that needs a pilot hole.
3) Does the Metallics QKK1 screw kit meet Buy American or ARRA requirements for a government job?
No. The QKK1 kit is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. If your contract carries a domestic sourcing clause, this kit will not satisfy it.
4) Can I drive the Metallics QKK1 screws with a hex driver, or do I need a screwdriver?
Either. The head is a hex with a slot cut in it, so a nut driver on the hex works for speed and a flat blade works where a driver will not fit. Hex width runs 0.244 to 0.25 inch, which a 1/4 inch nut driver takes. The slot is 0.045 to 0.054 inch wide and 0.052 to 0.074 inch deep.
5) Are these self-piercing screws suitable for electrical enclosures and HVAC duct, or just one trade?
Metallics lists the QKK1 kit for plumbing, HVAC, and electrical contractor work. Typical uses are panel and enclosure assembly, duct and equipment mounting, and mounting plumbing components to thin metal. One tray covers all three trades on a service truck.
6) Will zinc plated steel screws hold up in a damp mechanical room or outdoors?
These are AISI 1018-1022 steel with a zinc plating, which handles indoor and damp interior conditions like mechanical rooms and plenums. Zinc plating is a sacrificial coating, not stainless, so for sustained outdoor exposure, coastal air, or wet process areas a stainless or hot-dip fastener is the better call.
7) What thread pitch are these #8 self-piercing screws, and will they hold in thin gauge metal?
Thread count is 15 per inch on a #8 body. The sharp point with an undercut area below the head gives more thread engagement in the material, which is what develops holding power in thin sheet. In heavier structural steel you want a self-drilling screw rather than a self-piercing point.
8) How hard are the Metallics QKK1 screws, and will the heads snap off when driven with an impact driver?
Hardness is Rockwell C28-38. That range is case-hardened enough to pierce and thread thin gauge steel while keeping some ductility, so the screws are less prone to snapping than a fully hardened fastener. Driving slow and easing off at seating still matters on an impact tool.
9) Do the Metallics QKK1 screws have an integral washer head, and what is the bearing surface?
Yes, there is a washer under the hex head. Washer OD runs 0.322 to 0.348 inch with a thickness of 0.019 to 0.031 inch, so it spreads load over a wider footprint than a plain hex head, useful when fastening into thin panel where a bare head would pull through.
10) How big is the tray the Metallics QKK1 kit comes in, and will it fit a van drawer?
The tray measures 8 inches long by 4.62 inches wide by 1.25 inches high and the kit weighs 2.23 lbs, so it drops flat into a shallow van drawer or tool bag pocket with the lengths kept separated.
11) How do I order a single part number instead of the assortment?
The kit is sold under one model, QKK1, as a complete 500-piece assortment in the Metallics JQK series. There is no single-length option within it, so one line item gets you all four lengths.
How fast can I get the Metallics QKK1 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 Metallics QKK1 come with a warranty?
Absolutely. The Metallics QKK1 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 Metallics QKK1?
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 Metallics QKK1 from ZenSupply?
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