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Washers 7/8 Split Lock G5+G8 St-YZ (Jar 100)
Manufacturer Resources
Product Specs
- Ansi:
- ANSI
- Division:
- Electrical H1
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Washer Type:
- Lock Washer
- Department:
- Electrical
- Product Subgroup:
- Washers
- Product Length:
- 4.5 in
- Product Height:
- 7.25 in
- Product Material:
- Steel Yellow Zinc
- Product Weight:
- 6.72 lbs
- Product Width:
- 4.5 in
Metallics JLWHA180 – Frequently Asked Questions
1) What bolt size does the Metallics JLWHA180 split lock washer fit?
It's a 7/8 inch split lock washer, so it goes on 7/8 inch diameter bolts, studs, and anchors. Nominal washer sizing follows the bolt diameter, not the nut across-flats, so pair it with 7/8 inch hardware regardless of whether you're running a hex nut or a heavy hex nut.
2) Is this lock washer rated for use with Grade 5 and Grade 8 bolts?
Yes. The JLWHA180 is a G5+G8 split lock washer, meaning it's intended for both Grade 5 and Grade 8 fastener assemblies. That matters on structural and heavy equipment work, where a soft washer under a Grade 8 bolt will flatten and lose its spring action.
3) Will a yellow zinc lock washer hold up outdoors or in a damp mechanical room?
The washer is steel with a yellow zinc finish, which gives better corrosion resistance than plain or clear zinc and is normal for interior, sheltered exterior, and damp mechanical spaces. For sustained weather exposure, coastal air, or chemical contact, specify a hot dip galvanized or stainless split lock washer instead.
4) Should I use a split lock washer or a flat washer under the nut?
They do different jobs. A split lock washer, like the JLWHA180, bites into the nut and the bearing surface to resist loosening under vibration. A flat washer spreads load and protects the surface but does nothing against vibration. On equipment mounts, strut, and machinery anchoring you often want both: flat washer against the material, lock washer under the nut.
5) How many 7/8 split lock washers come in a jar, and what does it weigh?
100 pieces per jar, and the jar ships at 6.72 lbs. Jar dimensions are 7.25 x 4.5 x 4.5 inches, which is worth knowing if you're stocking a service van drawer or a shop bin rather than a shelf.
6) Is this washer only for electrical work, or can I use it on general mechanical fastening?
It's catalogued by Metallics as an electrical supply fastener, but a 7/8 steel split lock washer is a general purpose part. Electricians use them on large strut, transformer pads, switchgear frames, and ground bus hardware, and the same washer works on any mechanical assembly using 7/8 Grade 5 or Grade 8 bolting.
7) What is the exact part number and origin for the Metallics 7/8 split lock washer jar?
Order it as Metallics JLWHA180. It is the 7/8 split lock washer, steel yellow zinc, 100 per jar. Country of origin is China.
How fast can I get the Metallics JLWHA180 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 JLWHA180 come with a warranty?
Absolutely. The Metallics JLWHA180 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 JLWHA180?
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