Metallics JMHTB48 Bolts M4 x 8...
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Metallics JMHTB48 Bolts M4 x 8 C8.8 Hx Tap Blt St-zn (Jar 100)

Metallics JMHTB48 Bolts M4 x 8 C8.8 Hx Tap Blt St-zn (Jar 100)

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Model: JMHTB48
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$50.61
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Bolts M4 x 8 C8.8 Hx Tap Blt St-zn (Jar 100)

  • Additional Notes

    • Other sizes and quantities available by request

  • Features

    • A Hex headed extrnally threaded fastener with washer-face beneath the head, a metric thread pitch, made from medium carbon steel and heat-treated. The threads on the shank extended all of the way to directly beneath the head.
    • Used to mount motor to machinery. Also popular in automotive and truck repair

Manufacturer Resources

Product Specs

Arra Compliant:
N
Buy American Compliant:
No
Division:
Electrical H1
Fastener Head Type:
Hex
Fastener Head Width:
6.78 - 7 in.
Fastener Height:
2.68 - 2.92
Fastener Length:
8mm
Fastener Width:
7.74
Field Application:
Electrical, Plumbing, Heating, Air Conditioning Industries
Grade:
8.8
Hardness:
Rockwell C22-32
Language Code:
EN
Neurspe:
https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Hex_Hd_Metric_Tap_Bolt_St-Zn.pdf
Order Minimum Imperial:
100
Order Minimum Uom Imperial:
JR
Outside Diameter:
3.82 - 4 IN
Pack Type:
Jar
Product Group:
Fasteners
Product Height:
2.15 in
Product Length:
3 in
Product Weight:
245 g
Product Width:
76.2 MM
Sub Division:
Electrical-E H2
Tensile Strength:
11600 psi minimum
Thread Direction:
Right Hand
Thread Pitch:
0.7
Thread Type:
UNC
Yield Strength:
92800 psi minimum
Department:
Electrical
Product Subgroup:
Bolts
Product Type:
Hexagonal Bolt
Type2:
Hexagonal Bolt
Series:
MHTB and JMHTB
Product Finish:
Zinc
Product Details:
Hexagonal Bolt
Product Material:
Steel

Metallics JMHTB48 – Frequently Asked Questions

1) What thread size and pitch is the Metallics JMHTB48 hex tap bolt?
It's an M4 bolt with a 0.7 mm thread pitch, right-hand thread, which is the standard coarse metric pitch for M4. Length is 8 mm. So it threads into any M4 x 0.7 tapped hole or nut.
2) Is the JMHTB48 fully threaded all the way to the head?
Yes. On this hex tap bolt the threads run the full length of the 8 mm shank, right up under the head, so there is no unthreaded grip section. That matters when you need thread engagement at the very top of a shallow tapped hole or when clamping thin material.
3) Is the Metallics JMHTB48 Buy American or ARRA compliant for a government job?
No. The JMHTB48 is not Buy American compliant and is not ARRA compliant; country of origin is listed as multiple. If your project carries domestic sourcing requirements, this bolt will not satisfy them.
4) How strong is a Class 8.8 M4 hex tap bolt, and is it strong enough to mount a motor?
Grade (property class) 8.8, medium carbon steel, heat treated, hardness Rockwell C22-32. Yield is rated 92,800 psi minimum. Mounting motors to machinery is one of its stated uses, along with automotive and truck repair work.
5) Will zinc-plated steel hex tap bolts hold up outdoors or in a damp mechanical room?
The JMHTB48 is steel with a zinc finish. Zinc plating is a mild corrosion barrier suited to dry indoor and protected mechanical work, which is the field application Metallics lists for the series (electrical, plumbing, heating and air conditioning). For wet exterior or washdown duty, specify stainless rather than zinc-plated carbon steel.
6) How are these M4 bolts packaged, and what is the minimum I can order?
They come in a jar of 100. The order minimum is one jar, so 100 pieces is the smallest quantity. The jar weighs 245 g. Metallics lists other sizes and quantities in the MHTB and JMHTB series on request.
7) Does the head of this Metallics hex tap bolt need a separate washer?
The hex head has an integral washer face underneath it, which spreads the bearing load a little and gives a clean seat on a machined surface. It is not a substitute for a flat washer on soft or oversized-hole material, and no washers are supplied with the jar.
8) Is a hex tap bolt the right choice, or should I use a hex cap screw with a plain shank?
Use the tap bolt when you want thread all the way to the head: shallow tapped holes, thin brackets, or stacks where the clamped thickness varies. A partially threaded hex cap screw is the better pick when you want an unthreaded shank bearing in the joint for shear, since threads in the shear plane reduce the effective section. The JMHTB48 is the fully threaded version in M4 x 8, Class 8.8, zinc plated.
How fast can I get the Metallics JMHTB48 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 JMHTB48 come with a warranty?
Absolutely. The Metallics JMHTB48 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 JMHTB48?
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 JMHTB48 from ZenSupply?
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