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Washers 5/16 Int Tooth Lock St-zn (Jar 100)
Manufacturer Resources
Product Specs
- Ansi:
- ANSI
- Country Of Origin:
- MUL
- 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:
- Internal Tooth Lock Washer
- Department:
- Electrical
- Product Subgroup:
- Washers
- Product Length:
- 3 in
- Product Height:
- 2.15 in
- Product Material:
- Steel Zinc
- Product Weight:
- 0.17 lbs
- Product Width:
- 3 in
Metallics JLWI7 – Frequently Asked Questions
1) Should I use an internal tooth lock washer or an external tooth one for a grounding connection?
Internal tooth washers like the JLWI7 hide the teeth under the bolt head, so they bite the mating surface inside the bearing circle and leave a cleaner look with less chance of snagging. External tooth versions put the teeth out at a larger diameter for more holding torque on soft or slotted material. For panel grounding lugs and enclosure hardware where the bolt head covers the washer, internal tooth is the usual pick.
2) Are these Metallics washers plated for corrosion resistance?
Yes, zinc plated steel. That handles dry indoor and typical panel or raceway work. For sustained wet, coastal, or corrosive exposure, spec stainless instead, since zinc plating is a sacrificial coating, not a stainless base.
3) What trades and applications are these 5/16 lock washers intended for?
Metallics lists them for the electrical, plumbing, heating and air conditioning industries. In practice that's strut and hanger hardware, panel and enclosure fastening, equipment mounting, and anywhere a 5/16 bolted joint sees vibration and needs to stay tight.
4) Do I still need a flat washer if I use an internal tooth lock washer?
On soft materials, sheet metal, or oversized holes, yes. The teeth on the JLWI7 are meant to dig in, which is fine on steel but can chew up aluminum or thin sheet. Put a flat washer under the tooth washer when you need load spread; on solid steel structure the tooth washer alone is what most electrical bolted joints use.
How fast can I get the Metallics JLWI7 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 JLWI7 come with a warranty?
Absolutely. The Metallics JLWI7 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 JLWI7?
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 JLWI7 from ZenSupply?
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and
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Our team is always ready to help you choose the right product for your project.