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Bolt 5/8-11 x 3 Grade 9 Hx Cap Scre (Jar 25)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Bolts
Metallics JG9HC29 – Frequently Asked Questions
1) Is a Grade 9 bolt stronger than a Grade 8, and when do I need it?
Grade 9 sits above Grade 8 in tensile strength and is specified where a joint sees high clamp load, shock, or vibration and a Grade 5 or Grade 8 fastener has been failing or loosening. The JG9HC29 is a Grade 9 hex cap screw in 5/8-11 x 3 inch. If your drawing or equipment manual calls out Grade 8 or lower, a Grade 9 meets or exceeds it in strength, but always match the grade the engineer specified rather than substituting downward.
2) How many bolts come in a jar of Metallics JG9HC29?
Each jar holds 25 of the 5/8-11 x 3 inch Grade 9 hex cap screws. The jar is the pack unit, so order in multiples of 25 if you need a larger count for a run of connections.
3) Do nuts and washers come with the JG9HC29 bolts?
No. The jar contains the 5/8-11 x 3 inch hex cap screws only. Order 5/8-11 coarse thread nuts and 5/8 inch washers separately, and size hardened washers to the Grade 9 bolt so the washer does not crush under full clamp load.
4) What grip length will a 3 inch long 5/8-11 cap screw handle?
Overall length under the head is 3 inches on the JG9HC29, so your total stack of material plus washers and nut has to fit inside that. As a practical rule, leave enough thread engaged in the nut to show one or two threads past it. For thicker assemblies you need a longer 5/8-11 screw, not this one.
5) Are these hex cap screws suitable for electrical equipment and strut mounting work?
Metallics stocks the JG9HC29 as part of its electrical fastener line, so it is the bolt an electrical contractor would pull for heavy equipment anchoring, switchgear and transformer pads, and structural attachments on an electrical job. At 5/8-11 it is on the heavy end, well above the 1/4-20 and 3/8-16 hardware used for routine strut and channel work.
6) What wrench or socket size do I need for a 5/8-11 hex cap screw?
A 5/8-11 hex cap screw takes a 15/16 inch socket or wrench across the flats under standard inch hex dimensions. Plan on a breaker bar or a torque wrench with range to spare, since a Grade 9 bolt in this diameter is torqued well past what a short ratchet will deliver comfortably.
How fast can I get the Metallics JG9HC29 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 JG9HC29 come with a warranty?
Absolutely. The Metallics JG9HC29 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 JG9HC29?
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