You may also like
Screws 5/16-18 x 1/2 FH Hx Pin TR MS (100 pcs)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Screws
Metallics TP133SFC – Frequently Asked Questions
1) What driver do I need for a hex pin tamper-resistant screw like the TP133SFC?
It takes a pin-in-hex (hex pin) security bit, not a standard Allen key. The recess is a hex socket with a solid pin in the center, so a plain hex wrench won't seat. Order the matching pin-in-hex bit for 5/16-18 head size before the install, or the crew will be on site with fasteners they can't drive.
2) Is the TP133SFC a sheet metal screw or does it need a tapped hole?
It needs a tapped hole or a nut. This is a machine screw with a 5/16-18 straight machine thread, so it does not form its own thread in sheet metal the way a self-tapping or sheet metal screw does. If you're fastening into bare unthreaded sheet, you'll need a 5/16-18 nut, a tapped boss, or a threaded insert behind it.
3) Will a flat head screw like this sit flush in my panel?
Yes, if the hole is countersunk. The TP133SFC is a flat head, which is designed to seat into a chamfered or countersunk hole and finish flush with the surface. Drilled-through sheet metal with no countersink will leave the head proud. For a flush tamper-resistant finish on an enclosure cover or trim plate, prep the countersink first.
4) Why use a tamper-resistant machine screw instead of a standard Phillips on electrical covers?
The point is to keep untrained hands out. A pin-in-hex screw can't be backed out with a screwdriver or a common hex key, so covers, trim plates, and device enclosures in public corridors, schools, transit areas, and multi-family common spaces stay closed until someone with the right security bit opens them. The TP133SFC gives that in a 5/16-18 machine thread, so it threads into existing tapped holes rather than requiring new prep.
5) How many screws come in a box of Metallics TP133SFC?
Each box holds 100 pieces. That's a bulk pack sized for MRO stock or a multi-device job, not a single repair, so a maintenance shop standardizing on pin-in-hex security fasteners can keep one box on the shelf and cover a run of covers or plates.
How fast can I get the Metallics TP133SFC 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 TP133SFC come with a warranty?
Absolutely. The Metallics TP133SFC 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 TP133SFC?
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 TP133SFC 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.