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Washer 3/8 Split Lockwshr BO (Jar 100)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Washers
Metallics JLW174BLK – Frequently Asked Questions
1) What size bolt does the Metallics JLW174BLK split lock washer fit?
It's a 3/8 inch split lock washer, so it goes on 3/8 inch bolts, screws, and threaded rod. Ordered as Metallics part JLW174BLK.
2) How many split lock washers come in a jar of Metallics JLW174BLK?
100 pieces per jar. The jar pack is the sell unit, which is how most electrical shops stock loose fasteners on the truck or at the bench.
3) What does the BO finish on the Metallics JLW174BLK washer mean?
BO is black oxide. It's a dark conversion coating rather than a plating, so it adds no measurable thickness and the washer still seats flat under a nut. Black oxide gives mild corrosion resistance in dry interior work and matches black hardware visually; for damp or outdoor runs a zinc or stainless washer is the better pick.
4) Why use a split lock washer instead of a flat washer on an electrical strut or panel bolt?
Different jobs. A split lock washer like the 3/8 JLW174BLK bites into the nut and the mating surface with spring tension so the joint resists loosening from vibration, which is why it shows up on strut hardware, transformer mounts, and panel bolting. A flat washer only spreads load and protects the surface; it does nothing about back-off. Many assemblies use both, flat washer against the material and the split lock under the nut.
5) Can I use a 3/8 split lock washer as the grounding connection washer?
No. The JLW174BLK is a mechanical split lock washer for keeping a 3/8 bolted joint tight. Bonding and grounding to a strut or enclosure calls for a listed grounding or bonding washer intended for that purpose. Use this one for fastening, not as the bonding means.
6) Will the 3/8 Metallics split lock washer work with 3/8-16 strut channel nuts?
Yes, as long as the thread is 3/8. Split lock washers are sized by bolt diameter, not by thread pitch, so a 3/8 washer fits 3/8-16 and 3/8-24 alike. The one thing to watch is clearance: on channel nuts and spring nuts the washer has to sit on a flat bearing surface to load properly, not on the curved lip of the strut.
How fast can I get the Metallics JLW174BLK 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 JLW174BLK come with a warranty?
Absolutely. The Metallics JLW174BLK 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 JLW174BLK?
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product
selection,
installation tips, and troubleshooting. Contact Us
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