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Bolts M8 (1.25) X 50Mm Hxbt 10.9 Din (Jar 100)
Additional Notes
- Other sizes and quantities available by request
Manufacturer Resources
Product Specs
- Arra Compliant:
- N
- Buy American Compliant:
- No
- 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:
- 50mm
- Hardness:
- Rockwell C23-34
- Language Code:
- EN
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- CT
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Tensile Strength:
- 120350 psi minimum
- Thread Pitch:
- 1.25
- 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 JMBHC881 – Frequently Asked Questions
1) How strong is a class 10.9 M8 bolt like the Metallics JMBHC881, and can I use it in a structural bracket?
Property class 10.9 steel, rated at 120,350 psi minimum tensile and 95,700 psi minimum yield, with a hardness of Rockwell C23-34. That puts it well above a general purpose class 8.8 or an SAE Grade 5 bolt, so it suits high load bracket, machine frame, and equipment mounting work where the engineer has called out 10.9. Match the nut to it: a class 10.9 bolt needs a class 10 nut to develop its rating.
2) Will the Metallics JMBHC881 bolt meet a Buy American or ARRA requirement on a federal job?
No. The JMBHC881 is not Buy American compliant and is not ARRA compliant, and country of origin is listed as multiple. If your contract carries a domestic sourcing clause, this bolt will not satisfy it and you need a domestically produced fastener instead.
3) Can I use a standard SAE or imperial nut on these M8 bolts?
No. The thread is metric M8 with a 1.25mm pitch, so it takes an M8 metric nut only. Imperial 5/16-18 hardware is close in diameter but the pitch does not match and it will cross thread. For full strength, pair it with a class 10 metric nut and a hardened washer.
4) What size wrench or socket fits the head of the Metallics JMBHC881 M8 hex bolt?
Hex head, with the across flats head width specified at 12.73 to 13, so a 13 mm socket or wrench is what you want on it. Head height is given as 5.15 to 5.45. Useful to know if you are driving these in a counterbore or a tight bracket pocket.
5) Are these zinc plated M8 bolts okay for outdoor or damp locations?
The JMBHC881 is zinc plated carbon steel. Zinc plating handles indoor, dry, and lightly damp service, and it is the usual finish for electrical and mechanical rough-in inside a building. For sustained exposure, washdown areas, coastal sites, or anything in contact with treated lumber, specify hot dip galvanized or stainless instead. Note that class 10.9 strength is not available in standard A2 or A4 stainless, so if you need both corrosion resistance and 10.9 strength, that is a conversation about a different fastener.
6) How many bolts come in a jar of Metallics JMBHC881, and is there an order minimum?
They ship in a jar of 100, and 100 count is the order minimum, so one jar is the smallest buy. The jar packaging keeps the count together on a service truck or in a parts bin rather than loose in a bag. Metallics notes other sizes and quantities in the MBHC and JMBHC series are available by request if 50mm is not the length you need.
How fast can I get the Metallics JMBHC881 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 JMBHC881 come with a warranty?
Absolutely. The Metallics JMBHC881 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 JMBHC881?
You can call, text, or email our expert support team for fast answers. We’re here to help with
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selection,
installation tips, and troubleshooting. Contact Us
Why buy the Metallics JMBHC881 from ZenSupply?
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