You may also like
Washers 12 Ext Tooth Lock St-zn (Jar 100)
Manufacturer Resources
Product Specs
- Ansi:
- ANSI
- Division:
- Electrical H1
- Field Application:
- Electrical, Plumbing, Heating and Air Conditioning Industries
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Washer Type:
- External Tooth Lock Washer
- Department:
- Electrical
- Product Subgroup:
- Washers
- Product Length:
- 3 in
- Product Height:
- 2.15 in
- Product Material:
- Steel Zinc
- Product Weight:
- 0.12 lbs
- Product Width:
- 3 in
Metallics JLWX12 – Frequently Asked Questions
1) What size screw does the Metallics JLWX12 external tooth lock washer fit?
The JLWX12 is a #12 external tooth lock washer, so it is sized for a #12 machine screw or sheet metal screw. The "12" in the model number is the screw size, not a dimension.
2) What is the difference between an external tooth lock washer and an internal tooth or split ring washer?
An external tooth washer like the JLWX12 puts its teeth around the outer edge, so the gripping bite happens out at the largest diameter under the screw head or nut. That gives more resistance to loosening from vibration than an internal tooth washer, and it also bites through paint or zinc coating, which is why electricians use them to get a bonding path through a painted enclosure. Internal tooth washers hide the teeth under the fastener head for a cleaner look on finished surfaces. A split ring washer relies on a single spring gap instead of multiple teeth.
3) Will the Metallics JLWX12 washers hold up in a damp or outdoor electrical enclosure?
These are zinc plated steel. The zinc gives ordinary indoor and protected-outdoor corrosion resistance, which covers most enclosure, strut and panel work. For continuous wet, coastal or chemical exposure, specify stainless rather than zinc plated steel.
4) How many Metallics JLWX12 lock washers come in a jar?
One hundred #12 external tooth lock washers per jar. The jar packaging is meant for a van shelf or MRO crib bin, where you need to grab a handful without a bag tearing open.
5) Are Metallics JLWX12 external tooth lock washers only for electrical work?
No. Metallics lists them for the electrical, plumbing, heating and air conditioning trades, so the same jar covers panel and enclosure fastening, hanger and strut assemblies, and mechanical equipment mounting.
6) Do the Metallics JLWX12 washers meet a dimensional standard for #12 hardware?
Metallics lists the JLWX12 as ANSI dimensioned, so the tooth washer follows the standard #12 external tooth pattern and will seat under a standard #12 screw head or nut without overhanging the hole.
7) How much does a jar of Metallics JLWX12 lock washers weigh and how big is the jar?
The jar of 100 weighs 0.12 lbs and measures 3 x 2.15 x 3 inches, small enough to sit in a standard parts bin or service truck drawer.
How fast can I get the Metallics JLWX12 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 JLWX12 come with a warranty?
Absolutely. The Metallics JLWX12 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 JLWX12?
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 JLWX12 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.