You may also like
Screw 1/4-20 x 1 Thumb Screw 18-8 (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 JTMS1SS – Frequently Asked Questions
1) Will a 1/4-20 stainless thumb screw work in a standard 1/4-20 tapped enclosure boss or with a 1/4-20 nut?
Yes. The JTMS1SS runs a standard 1/4-20 UNC thread, so it threads into any 1/4-20 tapped hole, boss, or weld nut, and takes a standard 1/4-20 hex or wing nut on the back side. Depth is the only thing to check: at 1 inch overall you need the tapped hole plus the clamped material to fall inside that length.
2) Is the JTMS1SS thumb screw stainless, and will it hold up outdoors or in a damp enclosure?
It's 18-8 stainless steel, the austenitic 300 series grade (roughly 18 percent chromium, 8 percent nickel) used for general corrosion resistance. That makes it a reasonable choice for damp interiors, outdoor enclosures, and washdown areas where a plated carbon steel thumb screw would rust at the head. For chloride-heavy exposure such as coastal or pool chemical environments, 316 stainless is the harder-duty step up.
3) Can I tighten these thumb screws without a screwdriver?
That's the point of a thumb screw. The JTMS1SS has a knurled or winged head meant to be turned by hand, so panels, covers, and guards that get opened repeatedly can be removed without a tool. For MRO and electrical panel work that is the usual reason to spec one over a hex or slotted machine screw. Note that hand tightening gives you less clamp load than a driven screw, so it is not the fastener for a joint that has to stay torqued.
4) Should I use a stainless thumb screw or a plated steel machine screw for an electrical panel cover?
Pick by how often the cover comes off and where it lives. A thumb screw like the 1/4-20 x 1 JTMS1SS is for covers pulled by hand on a regular basis, and the 18-8 stainless keeps the head from rusting solid in a damp or outdoor enclosure. If the cover is opened rarely, or the joint needs real torque or has to resist casual tampering, a driven machine screw in the same 1/4-20 thread is the better fastener.
5) How are Metallics JTMS1SS thumb screws packaged, and how many come in a pack?
They ship 100 screws in a jar. The jar pack is the standard shop and service-truck format for Metallics small fasteners, so one order covers a run of panel covers or a stocked bin rather than a single repair.
How fast can I get the Metallics JTMS1SS 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 JTMS1SS come with a warranty?
Absolutely. The Metallics JTMS1SS 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 JTMS1SS?
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 JTMS1SS 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.