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Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Screws
Metallics TP122SBC – Frequently Asked Questions
1) What driver do I need for the Metallics TP122SBC tamper-resistant screw?
The TP122SBC takes a pin-in-star (pin-in-Torx) bit, not a standard Torx. The head has a post in the center of the star recess, so a solid T-bit won't seat. You need the matching pin-in-star bit sized for a 4-40 head, which is why these get used where you don't want the public backing fasteners out.
2) Will a 4-40 x 1/4 inch machine screw thread into a tapped hole or do I need a nut?
This is a 4-40 machine screw, so it needs a mating thread: a 4-40 tapped hole or a 4-40 nut. It is not a self-tapping or sheet metal screw and will not cut its own thread. With only 1/4 inch of length, usable grip is short, so the plate or cover being fastened has to be thin enough to leave thread engagement in the tapped part.
3) Are these Metallics screws stainless, and will they hold up outdoors or in a damp electrical enclosure?
They're 18-8 stainless steel, the common 300-series austenitic grade, so they resist rust in wet and outdoor-exposed locations far better than plated carbon steel. 18-8 is not hardened, so don't over-torque a 4-40 head; the small star recess will strip before the threads do.
4) What does a button head do differently than a flat head on a tamper-resistant screw?
A button head sits proud of the surface with a low domed crown and bears on a flat face, so it does not need a countersunk hole. If the part you are fastening is countersunk for a flat head, the TP122SBC is the wrong profile; you'd want a flat head pin-in-star in the same 4-40 x 1/4 size instead.
5) How many screws come in a pack of Metallics TP122SBC?
Each pack is 100 pieces of the 4-40 x 1/4 inch button head pin-in-star screw, all one size. That quantity suits MRO stock for cover plates, trim rings, and small enclosure doors where a single size repeats across a building.
6) What is the part number to order for the 4-40 x 1/4 button pin-in-star stainless screw from Metallics?
Order Metallics TP122SBC. That number covers the 4-40 x 1/4 inch button head pin-in-star tamper-resistant machine screw in 18-8 stainless, packed 100 to a box.
How fast can I get the Metallics TP122SBC delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
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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 TP122SBC come with a warranty?
Absolutely. The Metallics TP122SBC 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 TP122SBC?
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