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Screw 1/4-20 x 1-1/4 Truss PH MS St- (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 JTMP102 – Frequently Asked Questions
1) Is the JTMP102 a machine screw or a self-tapping sheet metal screw?
It is a machine screw (MS). The threads run the full 1/4-20 machine thread form and it does not cut its own hole, so it needs a tapped 1/4-20 hole, a pre-threaded box or strap, or a nut on the back side. If you are fastening into bare sheet metal with no thread, you want a self-drilling or sheet metal screw instead.
2) Why pick a truss head screw instead of a pan head for electrical box and strap mounting?
A truss head is wider and lower in profile than a pan head, so it spreads the clamp load over a larger area and sits closer to the surface. That is why it gets used on sheet metal, box covers, straps and brackets where the hole is oversized or the material is thin and a pan head would pull through or stand too proud. If you need a flush surface in a countersunk hole, a flat head is the right choice instead, not this truss head.
3) How many Metallics JTMP102 screws come in a jar?
Each jar holds 100 of the 1/4-20 x 1-1/4 inch truss head screws. The jar pack is the standard MRO and service-truck quantity, so it suits a van stock or a shop bin rather than a single-job buy.
4) What is the JTMP102 screw made of?
Steel. The Metallics JTMP102 is a steel truss head machine screw, which suits dry interior electrical work such as boxes, covers, straps and brackets. For wet, outdoor, or corrosive locations, specify a stainless machine screw in the same 1/4-20 x 1-1/4 size instead.
5) Will a 1-1/4 inch long screw be too long for mounting a strap or cover?
At 1-1/4 inches of length under the truss head, there is enough thread for stacked material plus a nut, but on a thin cover against a tapped boss the excess will protrude behind the work. Measure your grip, the combined thickness of the parts being joined, and leave a few threads of engagement past it. If the screw bottoms out before it clamps, step down in length rather than forcing it.
6) What is the Metallics part number to order for a 1/4-20 x 1-1/4 truss head Phillips screw?
Order Metallics JTMP102. That is the manufacturer part number for the 1/4-20 x 1-1/4 inch steel truss head Phillips machine screw supplied in a 100-piece jar.
7) What driver do I need for these screws?
A Phillips driver. The JTMP102 truss head takes a Phillips bit, so no slotted or hex driver is needed on the job.
How fast can I get the Metallics JTMP102 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 JTMP102 come with a warranty?
Absolutely. The Metallics JTMP102 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 JTMP102?
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