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Bolts 1/2-13 X 3 Carriage Blt St-zn (Jar 25)
Manufacturer Resources
Product Specs
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Department:
- Electrical
- Product Subgroup:
- Bolts
Metallics JCB35 – Frequently Asked Questions
1) What thread size and nut do I need for the Metallics JCB35 carriage bolt?
The JCB35 is a 1/2-13 carriage bolt, so it takes a 1/2 inch coarse-thread (UNC) nut. 13 threads per inch is the standard coarse pitch for 1/2 inch, so any standard 1/2-13 hex nut, flange nut or nylon-insert lock nut threads on. Pair it with a 1/2 inch flat washer under the nut; carriage bolts have a domed head with no washer face on the head side.
2) What size hole do I drill for a 1/2 inch carriage bolt, and why does the head matter?
Drill 1/2 inch for the JCB35. A carriage bolt has a square shoulder beneath its domed head that pulls into wood as you tighten the nut, which locks the bolt against rotation so you can tension it from the nut side only, with no wrench or driver on the head. That is why these are used for wood-to-steel brackets, strut and equipment mounts: one-sided tightening. In steel the shoulder cannot bite, so for steel-to-steel use a hex bolt instead.
3) Are Metallics JCB35 carriage bolts OK for outdoor or damp locations?
They are zinc plated steel, which handles damp interior work, unheated spaces and sheltered exterior runs. Zinc plating is a sacrificial coating, not stainless, so for direct weather exposure, coastal air, or contact with pressure-treated lumber (the copper chemistry eats plain zinc), step up to hot-dip galvanized or stainless.
4) Do carriage bolts include nuts and washers?
No. The JCB35 jar is bolts only, 25 of them. You order 1/2-13 nuts and 1/2 inch washers separately. Budget one nut and at least one washer per bolt, and a second washer if you are clamping anything soft enough for the nut to crush.
5) How many carriage bolts come in a Metallics JCB35 jar?
25 bolts per jar, packed in a jar rather than a loose box, which is why these show up on service trucks and in MRO cribs. One jar covers a 1/2 inch bolt crib position for most shops; order multiples if you are bolting a full equipment run.
6) What is the Metallics part number for a 1/2-13 x 3 zinc carriage bolt?
JCB35 is the Metallics part number for the 1/2-13 x 3 inch zinc plated steel carriage bolt, sold 25 per jar. Use that number when matching a reorder so you get the same diameter, length and plating.
How fast can I get the Metallics JCB35 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 JCB35 come with a warranty?
Absolutely. The Metallics JCB35 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 JCB35?
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installation tips, and troubleshooting. Contact Us
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