You may also like
Screws 1/4-20 x 1 RH CD MS St-Zn (1000 pcs)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Screws
Metallics RM101-1M – Frequently Asked Questions
1) Are the Metallics RM101-1M screws corrosion protected for damp locations?
The screws are steel with a zinc plating (St-Zn), which gives light corrosion resistance for indoor and dry or normally damp locations. Zinc plated steel is not a stainless or hot dip galvanized fastener, so for wet exterior, coastal, or wash down areas specify a stainless steel machine screw instead.
2) Is this a machine screw or a self tapping sheet metal screw?
The RM101-1M is a machine screw (MS), fully threaded with a blunt end and a uniform 1/4-20 machine thread. It does not drill or tap its own hole. You need a pre tapped hole or a nut on the back side. For attaching into unthreaded sheet metal, a self tapping or sheet metal screw is the right part instead.
3) What head and drive style do the RM101-1M machine screws have?
Round head with a combination drive (RH CD), meaning the head is slotted and Phillips so it can be driven with either bit. The round head sits proud of the surface with a domed profile, so it is not a flush or countersunk screw. If the application needs the head flat with the material, you need a flat head machine screw.
4) How many screws come in the Metallics RM101-1M box?
One thousand pieces per box. That is a bulk contractor pack rather than a small hardware card, which is how these are typically bought for panel, fixture, and strut work where a crew burns through 1/4-20 hardware on a single job. Nuts and washers are separate items and are not part of the pack.
5) What do I order to go with 1/4-20 x 1 machine screws if I am not screwing into a tapped hole?
You need a mating 1/4-20 nut, and usually a flat washer plus a lock washer or a 1/4-20 nylon insert lock nut if vibration is a factor. The RM101-1M pack is screws only. With a 1 inch length, plan your stack up so the screw passes through the material and still engages the full nut thickness.
6) Is the Metallics part number for this 1/4-20 x 1 zinc machine screw RM101-1M?
Yes. Metallics lists it as RM101-1M, a 1/4-20 x 1 inch round head combination drive machine screw in zinc plated steel, 1000 per box. Quote that number to get the same head style, plating, and pack quantity rather than a loose count equivalent.
How fast can I get the Metallics RM101-1M 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 RM101-1M come with a warranty?
Absolutely. The Metallics RM101-1M 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 RM101-1M?
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 RM101-1M 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.