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Screws 1/4-20 x 1-1/4 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 TP321SPC – Frequently Asked Questions
1) Does the TP321SPC need a special driver, or will a Phillips bit work?
A Phillips will not touch it. The TP321SPC is a spanner (snake-eye) tamper-resistant head, which takes a two-pin spanner bit sized to the head. Order the matching spanner driver bit along with the screws if you don't already carry one.
2) Will a 1/4-20 spanner screw thread into a tapped hole, or does it need a nut?
The TP321SPC is a machine screw with a straight 1/4-20 machine thread, so it threads into an existing 1/4-20 tapped hole or takes a 1/4-20 nut on the back side. It is not a self-tapping or sheet metal screw and will not cut its own thread in unprepared metal.
3) What is the Metallics part number and MPN for the 1/4-20 x 1-1/4 spanner machine screw?
Order it as Metallics TP321SPC. That is both the catalogue model and the manufacturer part number for the 1/4-20 x 1-1/4 inch spanner tamper-resistant machine screw, 100 per pack.
4) Why use a spanner head screw instead of a standard slotted or Phillips screw on an electrical enclosure?
Spanner (snake-eye) heads are chosen where you want to keep the public out of a box but still allow routine service. Nobody opens it with a screwdriver, coin or keyring, and the dedicated two-pin bit stays with the maintenance crew. That makes the TP321SPC a fit for enclosure covers, device plates and panel work in schools, transit areas, lobbies and other high-traffic or vandal-prone spaces, where a plain Phillips invites tampering.
5) How many screws come in a pack of Metallics TP321SPC?
They are packed 100 pieces to the box, so a single order covers a sizeable run of covers or plates rather than a one-off repair.
6) Is the TP321SPC screw made in the USA?
Yes, the 1/4-20 x 1-1/4 inch spanner tamper-resistant machine screw from Metallics is a USA-made fastener, which matters on government and institutional jobs with domestic-sourcing language in the spec.
How fast can I get the Metallics TP321SPC 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 TP321SPC come with a warranty?
Absolutely. The Metallics TP321SPC 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 TP321SPC?
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 TP321SPC from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.