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Screw 1/4-20 x 1/2 Truss PH MS St-Zn (Jar 100)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Screws
Metallics JTMP99 – Frequently Asked Questions
1) What size and thread is the Metallics JTMP99 truss head machine screw?
The JTMP99 is a 1/4-20 x 1/2 inch machine screw, so it's 1/4 inch diameter with 20 threads per inch and a 1/2 inch length under the head. Machine thread, not sheet metal thread, so it needs a tapped hole or a 1/4-20 nut.
2) Is the Metallics JTMP99 screw a Phillips drive, and what head style is it?
Phillips drive with a truss head. The truss head is wide and low profile, so it covers oversized or slotted holes and sits closer to flush than a pan or round head, which is why it gets used on enclosure covers, strut fittings and plate work.
3) Are these zinc plated steel screws OK to use outdoors?
The JTMP99 is zinc plated steel (St-Zn). Zinc plating is a mild corrosion coating meant for dry indoor or protected use. For wet, coastal or washdown locations, step up to stainless steel fasteners instead.
4) Will a 1/4-20 x 1/2 truss head machine screw work for mounting device boxes and strut fittings?
That's the common use. 1/4-20 is the standard thread for strut nuts, channel fittings and many enclosure and box mounting holes, and the 1/2 inch length gives enough engagement for a nut or tapped channel without bottoming out in shallow work. If you're going through thicker stacked material you'll want a longer screw than 1/2 inch.
5) What part number do I order for the Metallics 1/4-20 x 1/2 truss head Phillips machine screw?
Order Metallics MPN JTMP99. One part number covers the item as supplied, a jar of 100 zinc plated steel screws, so there are no finish or length options to specify.
How fast can I get the Metallics JTMP99 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 JTMP99 come with a warranty?
Absolutely. The Metallics JTMP99 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 JTMP99?
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 JTMP99 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.