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Screws 1/4-20 x 3/4 FH Span TR MS USA (100 pcs)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Screws
Metallics TP319SFC – Frequently Asked Questions
1) What thread size and length is the Metallics TP319SFC screw?
The TP319SFC is a 1/4-20 x 3/4 inch machine screw, sold 100 pieces to the box. 1/4-20 means a quarter inch nominal diameter with 20 threads per inch, so it mates with 1/4-20 tapped holes and nuts. The 3/4 inch length is measured on a flat head screw, so it is the overall length including the head, and usable grip is 3/4 inch minus the material the head seats into.
2) What kind of driver do I need for Metallics spanner head screws?
Spanner tamper-resistant head, so a standard Phillips or slotted bit will not turn it. The TP319SFC takes a two-hole spanner (snake eye) bit sized to the head, which you need to buy separately. That is the point of the head style: it stays put unless someone has the matching bit.
3) Is the TP319SFC a machine screw or a self-tapping screw?
It is a machine screw (MS), not self-tapping. The 1/4-20 thread needs a pre-tapped 1/4-20 hole or a nut behind the work. If you are fastening into sheet metal with no tapped hole, you want a self-drilling or sheet metal screw instead, or you need to tap the hole first.
4) Will a flat head spanner screw sit flush on a cover plate?
Yes, if the hole is countersunk. Flat head means an 82 degree conical head that seats into a countersink and finishes flush with the surface, which is what you want on enclosure covers, device plates and panels where nothing should snag. On a plain drilled hole with no countersink the head will stand proud.
5) Why use tamper-resistant screws on electrical covers in public buildings?
In schools, transit areas, detention, housing common areas and anywhere exposed to the public, a spanner head keeps covers and plates from being opened with a screwdriver out of a pocket. The TP319SFC gives you that in a standard 1/4-20 x 3/4 flat head size, so you can swap it in wherever the existing hardware is already 1/4-20 tapped and countersunk, with no change to the prep. It comes 100 to a box, which covers a floor's worth of plates in one order.
6) What is the Metallics part number to order for a 1/4-20 x 3/4 flat head spanner screw?
Order Metallics TP319SFC. That one part number covers the 1/4-20 x 3/4 inch flat head spanner tamper-resistant machine screw, USA made, in a 100 piece box. There are no finish or size options to specify under it.
How fast can I get the Metallics TP319SFC 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 TP319SFC come with a warranty?
Absolutely. The Metallics TP319SFC 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 TP319SFC?
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selection,
installation tips, and troubleshooting. Contact Us
Why buy the Metallics TP319SFC from ZenSupply?
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and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.