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Washers M4 Flat St-zn (Jar 100)
Manufacturer Resources
Product Specs
- Ansi:
- ANSI
- Division:
- Electrical H1
- Field Application:
- Electrical, Plumbing, Heating and Air Conditioning Industries
- Fits Bolt Size:
- M4 IN
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Washer Type:
- Metric Flat Washer
- Department:
- Electrical
- Product Subgroup:
- Washers
- Product Finish:
- Zinc
- Product Length:
- 3 in
- Product Height:
- 2.15 in
- Product Material:
- Steel
- Product Weight:
- 0.12 lbs
- Product Width:
- 3 in
Metallics JMSW04 – Frequently Asked Questions
1) What bolt or screw size do the Metallics JMSW04 flat washers fit?
The JMSW04 is a metric flat washer sized for M4 fasteners, so it pairs with M4 machine screws, bolts and threaded rod. It will not seat correctly on inch-series hardware like a #8 or 1/4-20 screw, so if your fasteners are imperial you need an inch-series flat washer instead.
2) Are the Metallics M4 washers zinc plated steel or stainless?
Steel with a zinc finish. Zinc plated steel handles dry indoor work like panel builds, device mounting and strut assembly, but it is not stainless, so for wet, coastal or chemically exposed locations you should specify a stainless flat washer instead.
3) How are the Metallics JMSW04 M4 washers packaged, and how many come in one?
They ship in a jar of 100 pieces, which is the pack an electrician or maintenance tech keeps on the van or on the shop shelf rather than a bulk box. The jar weighs 0.12 lbs and measures 3 in by 3 in by 2.15 in, so it drops into a parts bin or tool bag easily.
4) Is this a flat washer or a lock washer for M4 screws?
It is a plain metric flat washer, not a split-ring or tooth lock washer. It spreads clamp load and protects the surface under the fastener but does nothing to resist loosening from vibration. On equipment that vibrates you would add an M4 lock washer or a nylon-insert lock nut along with it.
5) Can I use these M4 flat washers in electrical panel and HVAC work?
Yes, that is the intended use. Metallics lists the JMSW04 for the electrical, plumbing, heating and air conditioning trades, which covers spreading load under screw heads and nuts on enclosures, device plates, duct hangers and equipment mounting where M4 hardware is used.
How fast can I get the Metallics JMSW04 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 JMSW04 come with a warranty?
Absolutely. The Metallics JMSW04 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 JMSW04?
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 JMSW04 from ZenSupply?
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and
rewards on
every order.
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