Metallics QK15GR8M 8 x 1 in. 1...
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Metallics QK15GR8M 8 x 1 in. 1/4 Hex Head Slotted Sharp Point Self-Piercing & Tapping Screws - Gray - Steel Zinc - Each

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Model: QK15GR8M

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

$50.27
$0.27
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8 x 1 in. 1/4 Hex Head Slotted Sharp Point Self-Piercing & Tapping Screws - Gray - Steel Zinc - 8000qty

  • Features

    • 1/4 Hex Sharp Point Tap with Slotted Drive
    • Twin lead threads help to reduce driving torque.
    • 8 Diameter, 1" Length
    • Undercut area beneath the head allows greater length of thread engagement.
    • Steel Zinc Material

  • Additional Notes

    • Other sizes and quantities available by request.| Head dimensions of self-piercing screws differ firom those of standard tapping screws. | There is no single standard for self·piercing screw dimensions. These values are offered as a guide; deviations from these specifications may occur.

Manufacturer Resources

Product Specs

Minimum Purchase:
8000 units
Arra Compliant:
C
Buy American Compliant:
C
Division:
Electrical H1
Drive Type:
Slotted
Fastener Head Color:
Gray
Fastener Head Height:
0.096 - 0.11 in.
Fastener Head Type:
Hex
Fastener Head Width:
0.244 - 0.25 in.
Fastener Length:
1
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
Order Minimum Imperial:
8000
Order Minimum Uom Imperial:
TH
Pack Type:
Box
Product Group:
Fasteners
Product Height:
10.75 in
Product Length:
11.5 in
Product Weight:
43.2 lbs
Product Width:
11.5 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 & Tapping Screw
Type2:
Self-Piercing & Tapping Screw
Series:
JQK
Product Finish:
Zinc
Product Details:
Self-Piercing & Tapping Screw
Product Material:
Steel Zinc

Metallics QK15GR8M – Frequently Asked Questions

1) How many Metallics QK15GR8M screws do I have to buy at once?
The QK15GR8M ships as a box of 8,000 pieces, which is the order minimum. Figure roughly 43.2 lbs for the carton. It's a bulk-quantity item, so it suits standing stock for electrical rough-in crews rather than a one-off repair.
2) Will a 1/4 inch hex driver fit the head on these Metallics self-piercing screws?
Yes. The hex head measures 0.244 to 0.250 in. across, so a 1/4 in. hex driver or magnetic nutsetter seats on it. The head is also slotted (slot width 0.045 to 0.054 in., depth 0.052 to 0.074 in.), so a flat blade works when you can't get a driver in square.
3) Do I need to pre-drill for a self-piercing screw, or does it start its own hole?
No pilot hole. The QK15GR8M has a sharp point that pierces thin sheet metal and taps its own thread as it drives. Twin lead threads cut the driving torque, which matters when you're running thousands of them with a screwgun.
4) What size and thread count is the Metallics QK15GR8M screw?
It's a #8 diameter, 1 in. long screw at 15 threads per inch. The coarse 15 TPI thread is what lets it tap into sheet steel; the 1 in. length gives you room for stacked sheet plus thread engagement, helped by the undercut under the head.
5) Is there a built-in washer on this hex head screw, and how wide does it bear?
The head carries an integral washer section with a 0.322 to 0.348 in. outside diameter and 0.019 to 0.031 in. thickness, plus a head height of 0.096 to 0.11 in. That bearing surface spreads load on thin sheet so the head doesn't pull through. No separate washer needed.
6) Are these screws hard enough to tap into steel studs or sheet metal?
The screw is made from AISI 1018 to 1022 steel case hardened to Rockwell C28-38, which is what lets the sharp point form its own thread in sheet steel instead of stripping. Zinc plated finish on a steel body.
7) Does the Metallics QK15GR8M meet Buy American and ARRA requirements for a public project?
Both the ARRA and Buy American fields on the QK15GR8M are flagged compliant. Country of origin is listed as multiple, so if your spec requires a single documented origin, request the mill paperwork for the lot you receive.
8) Will the gray head on these screws match a standard zinc fastener?
Head color is specified gray over a zinc plated steel body, so it reads as a plain bright-to-dull zinc fastener rather than a painted or colored head. For exposed work where color has to match existing trim screws, it won't blend with a painted head.
9) Can I rely on the published head dimensions for these self-piercing screws when checking a spec?
Treat them as a guide. Self-piercing screw heads are dimensioned differently from standard tapping screws, and there is no single industry standard for self-piercing dimensions, so the published ranges (head 0.244 to 0.250 in. wide, 0.096 to 0.11 in. tall) can deviate lot to lot.
How fast can I get the Metallics QK15GR8M 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 QK15GR8M come with a warranty?
Absolutely. The Metallics QK15GR8M 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 QK15GR8M?
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
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