Blackburn 37030SW-C 3/8 SIL. B...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$54.26
$5.87

Blackburn 37030SW-C 3/8 SIL. BRONZE SPLIT LOCKWASHER

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Model: 37030SW-C
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$54.26
$5.87
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3/8 SIL. BRONZE SPLIT LOCKWASHER

Manufacturer Resources

Product Specs

Country Of Origin:
Taiwan, Province Of China (TW)
Product Group:
Components & Hardware
Product Type:
Split Lock Washer
Selling Unit Of Measure:
each
Suitable For:
3/8 Inch
Type2:
Split washer
Department:
Electrical
Product Subgroup:
Washers
Product Material:
Silicon Bronze

Blackburn 37030SW-C – Frequently Asked Questions

1) Is the 37030SW-C washer bronze or plated steel?
Solid silicon bronze, not plated. That matters on grounding and bonding connections, where a plated steel washer can corrode out and loosen the joint over time.
2) Can I use a silicon bronze lock washer with bronze grounding clamps and copper conductors?
Yes. Silicon bronze is the usual companion metal for bronze grounding connectors and copper, which is why Blackburn supplies this 3/8 inch split washer as an electrical department item rather than a general fastener. Pairing bronze with bronze avoids the dissimilar metal corrosion you get when steel hardware is dropped into a copper or bronze ground connection.
3) What is the difference between a split lock washer and a flat washer on a ground connection?
A split washer like the 37030SW-C is a spring: the gap lets it compress under the nut and push back, keeping tension on the joint through vibration and thermal cycling. A flat washer only spreads load and does nothing to resist loosening. On bolted bonding connections that see vibration, crews typically use a flat washer for bearing plus the split washer under the nut.
4) What is the exact part number and manufacturer for this 3/8 bronze split lockwasher?
Blackburn, part number 37030SW-C. That's the number to quote for a 3/8 inch silicon bronze split lockwasher when matching an existing bill of material.
5) Is the Blackburn 37030SW-C sold individually or in a box?
It's sold each, so the quantity you enter is the number of washers you get. Order a count that covers every bolted connection on the job plus spares.
6) Where is the Blackburn 37030SW-C lock washer manufactured?
Country of origin is Taiwan. Worth having on hand if your project submittals or procurement paperwork require an origin declaration.
How fast can I get the Blackburn 37030SW-C 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 Blackburn 37030SW-C come with a warranty?
Absolutely. The Blackburn 37030SW-C 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 Blackburn 37030SW-C?
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 Blackburn 37030SW-C 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.