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1 X 5/16-18 SILICONE HEX BOLT
Manufacturer Resources
Product Specs
- Country Of Origin:
- Taiwan, Province Of China (TW)
- Head Type:
- Hexagonal
- Product Group:
- Components & Hardware
- Product Net Depth Length:
- 1 in
- Product Type:
- Hex Head Bolt
- Selling Unit Of Measure:
- each
- Type2:
- Hexagonal bolts
- Department:
- Electrical
- Product Subgroup:
- Bolts
- Product Diameter:
- 5/16 in
- Product Material:
- Silicon Bronze
Blackburn 31100BB-C – Frequently Asked Questions
1) What thread size and length is the Blackburn 31100BB-C hex bolt?
It's a 5/16-18 thread, 1 inch long, with a hexagonal head. The 18 means 18 threads per inch, the standard coarse (UNC) pitch for a 5/16 inch diameter fastener, so it mates with any 5/16-18 nut or tapped hole.
2) Can I use a stainless or galvanized steel bolt instead of this silicon bronze one on a ground connector?
Not interchangeably. Pairing a steel bolt with copper conductors or a bronze connector body puts two dissimilar metals in contact, which accelerates corrosion at the joint and degrades the ground path over time. The 31100BB-C is silicon bronze specifically so the bolt, the connector and the copper conductor stay galvanically close. If your connector body is bronze, use the bronze bolt.
3) Does the Blackburn 31100BB-C come with a nut, or is it the bolt only?
Bolt only. It is sold each, one piece per unit, so any mating nut or washer has to be ordered separately. Most bronze grounding connectors are tapped to take the bolt directly, in which case no nut is needed.
4) How do I order a replacement bolt for a Blackburn bronze ground clamp, and what part number do I ask for?
Order by manufacturer part number 31100BB-C from Blackburn. It's a 1 inch long, 5/16-18 silicon bronze hex bolt sold one at a time, which is the common replacement size for bronze grounding and bonding connector hardware.
5) Will a 1 inch long bolt be long enough for my clamp and conductor?
The 31100BB-C gives 1 inch of usable length under the head, which covers a typical bronze clamp body plus a conductor seat. Add up your clamp thickness, the conductor diameter and any washer; if that total is over an inch, you need a longer bolt in the same 5/16-18 thread rather than this one.
6) What wrench or socket size do I need for this 5/16-18 hex bolt?
It has a standard hexagonal head on a 5/16 inch diameter body, so a 1/2 inch wrench or socket is the usual fit for an inch-series 5/16 hex cap screw. Bronze is softer than steel, so snug it with a wrench rather than an impact driver to avoid stripping the threads.
How fast can I get the Blackburn 31100BB-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 31100BB-C come with a warranty?
Absolutely. The Blackburn 31100BB-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 31100BB-C?
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installation tips, and troubleshooting. Contact Us
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