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Bolts M8 x 25 HXBT St-zn (Jar 100)
Additional Notes
- Other sizes and quantities available by request
Manufacturer Resources
Product Specs
- Arra Compliant:
- C
- Buy American Compliant:
- C
- Dimensional Standard:
- DIN 931
- Division:
- Electrical H1
- Fastener Head Type:
- Hex
- Fastener Head Width:
- 12.73 - 13 in.
- Fastener Height:
- 5.15 - 5.45
- Fastener Length:
- 25mm
- Hardness:
- Rockwell C23-34
- Language Code:
- EN
- Neurspe:
- https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Hex_Hd_Metric_Bolt_St-Zn.pdf
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- CT
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 3.6 in
- Product Length:
- 3 in
- Product Weight:
- 1361 g
- Product Width:
- 76.2 MM
- Sub Division:
- Electrical-E H2
- Tensile Strength:
- 120350 psi minimum
- Yield Strength:
- 95700 psi minimum
- Department:
- Electrical
- Product Subgroup:
- Bolts
- Product Type:
- Hexagonal Bolt
- Type2:
- Hexagonal Bolt
- Series:
- MBHC and JMBHC
- Product Finish:
- Zinc
- Product Details:
- Hexagonal Bolt
- Product Material:
- Steel
Metallics JMBHC82 – Frequently Asked Questions
1) What size is the JMBHC82 bolt and how long is the grip?
It's an M8 bolt with a 25 mm overall length under the head, hex head. At 25 mm total you're working with a short fastener, so for a through-bolted joint keep combined material plus washers and nut engagement inside that length.
2) Will zinc plated steel bolts hold up outdoors or in a damp mechanical room?
The JMBHC82 is steel with a zinc finish. Zinc plating handles indoor and sheltered conditions, damp mechanical rooms and the like, but it's a sacrificial coating, not stainless. For direct weather exposure, coastal sites, or anywhere in contact with standing water or treated lumber, specify stainless or hot dip galvanized instead.
3) How strong are these bolts, and can I use them in a structural connection?
Tensile strength is 120,350 psi minimum with 95,700 psi minimum yield, and hardness is Rockwell C23-34. That puts it in medium carbon heat treated territory, fine for general equipment mounting, strut, panel, and machine work. For a structural steel connection, follow the engineer's called out bolt spec on the drawing rather than substituting a general purpose hex bolt.
4) Do these M8 bolts come with nuts and washers?
No. The jar contains 100 hex bolts only, no nuts, no flat or lock washers. Order M8 hex nuts and M8 washers separately to complete a through-bolted joint.
5) Are these M8 bolts metric thread, or will a standard inch nut fit?
Metric only. The JMBHC82 is an M8 bolt to DIN 931, so it takes M8 x 1.25 coarse metric nuts. Inch series nuts, including 5/16-18, will not thread on. If your existing hardware is inch, order an imperial hex bolt instead.
6) What wrench or socket do I need for these M8 hex bolts?
Head height runs 5.15 to 5.45, and the head is a standard metric hex. DIN 931 M8 takes a 13 mm socket or wrench, so stock 13 mm drivers for crews installing these. The 5.15 to 5.45 head height matters if you're socketing down into a counterbore or a tight channel.
7) How many bolts come in a jar of Metallics JMBHC82, and can I buy fewer?
It ships as a jar of 100 pieces, and 100 count is the order minimum, so the jar is the smallest unit. The jar pack is useful on a service van because it keeps the loose M8 hardware sorted instead of rolling around a bin. Other sizes and quantities are available by request.
8) Are Metallics JMBHC82 bolts Buy American or ARRA compliant for a government job?
Both the ARRA and Buy American fields on the JMBHC82 carry a C, and country of origin is China. On a federally funded project with a domestic sourcing requirement, verify the flag against your contract's specific clause, because origin and compliance flag need to agree before the submittal goes in.
How fast can I get the Metallics JMBHC82 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 JMBHC82 come with a warranty?
Absolutely. The Metallics JMBHC82 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 JMBHC82?
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