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Bolts M8 x 20 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:
- 20mm
- 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:
- 1220 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 JMBHC80 – Frequently Asked Questions
1) What thread size and length is the Metallics JMBHC80 hex bolt?
The JMBHC80 is an M8 metric hex head bolt with a 20mm length, made to DIN 931. DIN 931 is the partially threaded hex bolt standard, so plan on a plain shank under the head rather than thread running all the way up.
2) Will the Metallics M8 bolts work on a Buy American or ARRA funded job?
Metallics flags the JMBHC80 as both ARRA compliant and Buy American compliant, though the bolts are made in China. On federally funded work, hand those compliance codes and the country of origin to your specifier before you submit, since the two requirements are judged differently by project.
3) Are these metric bolts a drop-in for a 5/16 inch fastener?
No. M8 is a metric thread and won't engage a 5/16-18 or 5/16-24 nut or tapped hole, even though the diameters are close. If your equipment is tapped in inch threads, order an inch hex bolt instead; use the JMBHC80 only where the mating thread is metric M8.
4) Is the M8 x 20 Metallics bolt plated for corrosion resistance?
It's zinc plated steel. That's suitable for dry indoor electrical and general MRO work (strut, enclosures, equipment mounting). For wet or exterior exposure, zinc plating is a light-duty coating and stainless or hot-dip galvanized hardware is the usual call.
5) How strong is the JMBHC80 bolt - what tensile and yield numbers does it carry?
Minimum tensile strength is 120,350 psi and minimum yield is 95,700 psi, with a core hardness of Rockwell C23-34. Those are structural-grade numbers for an M8 fastener, enough for equipment anchoring and bracket work rather than just panel assembly.
6) How many bolts come in a jar of the Metallics JMBHC80?
They ship 100 to a jar, and 100 count is the order minimum. The jar weighs 1220 g, so a single jar is easy to keep on a service truck.
7) What wrench or socket do I need for an M8 DIN 931 hex bolt?
A 13mm socket or wrench. The head width across flats on the JMBHC80 measures just under 13, which is the standard DIN 931 M8 head. Head height runs about 5.15 to 5.45mm, so it clears most shallow counterbores but check tight recesses.
How fast can I get the Metallics JMBHC80 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 JMBHC80 come with a warranty?
Absolutely. The Metallics JMBHC80 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 JMBHC80?
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 Metallics JMBHC80 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.