Metallics QK10M 8 x 3/4 in. 1/...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$50.09
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Metallics QK10M 8 x 3/4 in. 1/4 Hex Head Slotted Sharp Point Self-Piercing & Tapping Screws - Steel Zinc - 1000qty

Metallics QK10M 8 x 3/4 in. 1/4 Hex Head Slotted Sharp Point Self-Piercing & Tapping Screws - Steel Zinc - Each

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Model: QK10M
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$50.09
$0.09
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8 x 3/4 in. 1/4 Hex Head Slotted Sharp Point Self-Piercing & Tapping Screws - Steel Zinc - 1000qty

  • Features

    • Undercut area beneath the head allows greater length of thread engagement.
    • 8 Diameter, 3/4" Length
    • Hex 1/4 Head with Slotted Drive
    • Twin lead threads help to reduce driving torque.
    • 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:
1000 units
Arra Compliant:
N
Buy American Compliant:
No
Division:
Electrical H1
Drive Type:
Slotted
Driver Size:
#8
Fastener Head Height:
0.096 - 0.11 in.
Fastener Head Type:
Hex
Fastener Head Width:
0.244 - 0.25 in.
Fastener Length:
4-Mar
Field Application:
Electrical, Plumbing, Heating and Air Conditioning Industries
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:
1000
Order Minimum Uom Imperial:
TH
Pack Type:
Jar
Product Group:
Fasteners
Product Height:
5.75 in
Product Length:
3.5 in
Product Weight:
3.86 lbs
Product Width:
3.5 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 QK10M – Frequently Asked Questions

1) Do I need to pre-drill for the Metallics QK10M #8 x 3/4 in. screws?
No pilot hole needed in thin material. The QK10M is a sharp point self-piercing and tapping screw, so the point pierces the sheet and the thread forms its own mating thread as you drive. Twin lead threads cut the driving torque, and the undercut beneath the head gives more usable thread engagement.
2) Can I use the Metallics QK10M on a federally funded job with domestic content requirements?
No. The QK10M is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. For a job carrying domestic sourcing language you need a fastener specifically certified to it.
3) What drives a Metallics QK10M screw, a nut driver or a screwdriver?
Either. The head is a 1/4 inch hex with a slotted drive cut into it, so a 1/4 in. nut driver or hex socket works, and a flat blade fits the slot when you cannot get a socket in. Head width measures 0.244 to 0.25 in., slot width 0.045 to 0.054 in. and slot depth 0.052 to 0.074 in. Driver size is listed as #8.
4) Does the QK10M screw have a built-in washer face, and how big is it?
It does. The integral washer under the hex head has an outside diameter of 0.322 to 0.348 in. and a thickness of 0.019 to 0.031 in., which spreads bearing load on sheet metal and on knockout and bracket holes larger than the shank.
5) How many Metallics QK10M screws come in a jar, and can I buy fewer?
They ship in a jar of 1,000. Order minimum is 1,000 pieces, so a jar is the smallest buy. Metallics lists other sizes and quantities in this family by request.
6) Will a zinc plated self-piercing screw hold up outdoors or in a damp mechanical room?
The QK10M is zinc plated carbon steel, which suits dry interior electrical, plumbing and HVAC work. Zinc plating is a mild corrosion coating, not a marine or sustained-wet finish, so for exterior or washdown locations spec a stainless or coated exterior fastener instead.
7) Are these screws hard enough to pierce sheet metal duct and enclosure steel?
Case hardness runs Rockwell C28-38 on AISI 1018-1022 steel, which is what lets the sharp point pierce and tap light gauge sheet without a pilot. That is a thin-sheet fastener, not a screw for structural steel or thick plate.
8) Will the head of this self-piercing screw sit as low as a standard tapping screw head?
Not necessarily. Head height on the QK10M runs 0.096 to 0.11 in., and Metallics notes that self-piercing screw head dimensions differ from standard tapping screws, with no single industry standard governing them. Treat the published figures as a guide and check clearance where a cover or plate has to seat flush over the head.
9) What thread count do the Metallics #8 x 3/4 in. self-piercing screws have?
15 threads per inch, in a twin lead form. The coarse twin lead pitch pulls the screw through sheet faster and with less driving torque than a single lead thread of the same diameter.
10) How much does a jar of 1,000 Metallics QK10M screws weigh for shipping or stocking a van?
A jar runs 3.86 lbs, measuring 3.5 x 3.5 x 5.75 in. Easy to carry on a cart or keep on a shelf in a service van.
How fast can I get the Metallics QK10M 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 QK10M come with a warranty?
Absolutely. The Metallics QK10M 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 QK10M?
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 QK10M from ZenSupply?
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