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Washers 6 Int Tooth Lock St-zn (Box 5000)
Manufacturer Resources
Product Specs
- Ansi:
- ANSI
- Division:
- Electrical H1
- Pack Type:
- Box
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Washers
- Product Material:
- Steel Zinc
Metallics LWI3-5M – Frequently Asked Questions
1) What size screw does the Metallics LWI3-5M internal tooth lock washer fit?
The LWI3-5M is a #6 internal tooth lock washer, so it pairs with #6 machine screws and sheet metal screws. That is the common size for device mounting screws, ground screws in boxes, and small panel hardware.
2) What is the difference between an internal tooth lock washer and an external tooth or split ring washer?
Internal tooth washers like the LWI3-5M carry their teeth on the inner bore, so the teeth bite under the screw head and the outer edge stays smooth. That hides the gripping edges and leaves a cleaner look on exposed plates and covers. External tooth versions put the teeth on the outside diameter for a wider bite under a larger head or flange, and a split ring relies on a single spring gap instead of multiple teeth. For #6 hardware under a small screw head, the internal tooth style is the usual pick.
3) Are these #6 lock washers plated for corrosion resistance?
They are steel with a zinc plating, which gives basic corrosion protection for indoor and dry-location electrical work. For wet, outdoor, or corrosive environments, specify a stainless washer instead.
4) How many Metallics LWI3-5M washers come in a box?
They ship as a box of 5,000 pieces, a bulk pack aimed at shops and MRO stockrooms that go through #6 fasteners constantly. If you only need a handful for one device, this is far more than a single job calls for.
5) Will a #6 internal tooth lock washer keep a device screw from backing out from vibration?
That is what it is for. The teeth on the inner bore deform against the screw head and the mating surface, resisting rotation so the screw holds under vibration. It is a serrated locking washer, not a flat washer, so it does not spread load over a wide area. If you need both load spreading and locking, stack a flat washer under it.
6) Is the Metallics LWI3-5M washer made to an ANSI dimensional standard?
Yes, it is built to ANSI dimensioning, so the bore and outside diameter follow the standard #6 internal tooth lock washer geometry and it interchanges with other ANSI-dimensioned #6 lock washers already in your bins.
7) Can I use these zinc plated steel lock washers on an aluminum enclosure or ground lug?
Zinc plated steel against bare aluminum creates a dissimilar metal couple that can corrode in damp conditions, so it is not the right choice for an outdoor aluminum enclosure or an exposed aluminum grounding connection. Indoors and dry, zinc plated steel is standard practice. For aluminum in wet locations, use hardware rated for that contact.
How fast can I get the Metallics LWI3-5M 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 LWI3-5M come with a warranty?
Absolutely. The Metallics LWI3-5M 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 LWI3-5M?
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product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the Metallics LWI3-5M from ZenSupply?
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every order.
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