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Screws 1/4-20 x 3/4 Btn Star Pin TR MS 18 (100 pcs)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Screws
Metallics TP217SBC – Frequently Asked Questions
1) What thread size and length are the Metallics TP217SBC screws?
They're 1/4-20 by 3/4 inch. That's a 1/4 inch diameter machine screw thread at 20 threads per inch, so it mates with a 1/4-20 tapped hole or nut, with 3/4 inch of screw length to work with. Supplied 100 pieces to the box.
2) What driver do I need for a pin-in-star tamper resistant screw like the TP217SBC?
A pin-in-Torx (star with a center hole) bit, not a standard Torx. The TP217SBC has a post in the middle of the star recess, which blocks a solid Torx driver from seating. You need the matching pin-in-star bit on hand before you set these, otherwise nothing on the truck will turn them.
3) Why would I use a tamper resistant screw instead of a standard machine screw on an electrical enclosure or cover plate?
The point is deterrence in public or unsecured areas. The TP217SBC is a 1/4-20 machine screw with a pin-in-star head, so a passerby with a common screwdriver or Torx bit can't back it out. Typical use is covers, panels, guards, and plates in corridors, transit spaces, schools, and multi-family common areas where a standard Phillips or slotted screw gets removed. For a mechanical room nobody but staff enters, a standard machine screw does the same clamping job for less trouble.
4) Will the button head on these 1/4-20 screws sit flush with the surface?
No. Button head is a low, rounded head that sits on top of the material, so it stands proud of the surface rather than sinking into it. If you need a flush face, a flat (countersunk) head screw into a chamfered hole is the right choice instead. The button profile does keep the protrusion low and gives a wide bearing surface against sheet metal, which is why it's common on enclosure covers.
5) Do the Metallics TP217SBC screws come with nuts, or do I need a tapped hole?
Screws only, 100 to the pack. A machine screw thread like 1/4-20 needs either a tapped 1/4-20 hole in the part or a separate 1/4-20 nut, so order nuts separately if the material isn't threaded. These won't cut their own thread into sheet metal the way a self-tapping screw does.
6) What is the Metallics part number for the 1/4-20 x 3/4 button head pin-in-star tamper resistant screw?
Metallics calls it TP217SBC, and that's the number to quote for reorders. One model, sold in 100 piece packs of 1/4-20 x 3/4 button head star pin tamper resistant machine screws.
How fast can I get the Metallics TP217SBC delivered?
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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 TP217SBC come with a warranty?
Absolutely. The Metallics TP217SBC 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 TP217SBC?
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