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Additional Notes
- Other sizes and quantities available by request
Manufacturer Resources
Product Specs
- Arra Compliant:
- C
- Buy American Compliant:
- C
- Dimensional Standard:
- ASME B18.6.3-2002
- Division:
- Electrical H1
- Drive Type:
- Slotted
- Fastener Head Type:
- Hex
- Fastener Head Width:
- 0.244 - 0.250 in.
- Fastener Height:
- 0.080 - 0.093
- Fastener Length:
- 1
- Fastener Width:
- 0.272
- Language Code:
- EN
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- CT
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 2.15 in
- Product Length:
- 3 in
- Product Weight:
- 204 g
- Product Width:
- 76.2 MM
- Sub Division:
- Electrical-E H2
- Thread Per Inch:
- 32
- Thread Pitch:
- 0.138
- Thread Standard:
- ANSI/ASME B1.1
- Thread Type:
- UNC
- Washer Od:
- 0.302 - 0.328 in.
- Department:
- Electrical
- Product Subgroup:
- Bolts
- Product Type:
- Hexagonal Bolt
- Type2:
- Hexagonal Bolt
- Series:
- JHHMS
- Product Finish:
- Zinc
- Product Details:
- Hexagonal Bolt
- Product Material:
- Steel
Metallics JHHMS63 – Frequently Asked Questions
1) Will the Metallics JHHMS63 6-32 machine screws thread into standard electrical box and device screw holes?
Yes. The JHHMS63 is a 6-32 UNC thread, 32 threads per inch, which is the standard thread used for device mounting and cover screws in outlet and switch boxes. Thread conforms to ANSI/ASME B1.1, so it mates with any 6-32 tapped hole or nut.
2) Do these screws meet Buy American requirements for a federally funded project?
Metallics flags the JHHMS63 as both ARRA compliant and Buy American compliant. Country of origin on record is China, so if your specification requires domestic melt and manufacture rather than the compliance flag, verify against your contract language before submitting.
3) What head and driver do the JHHMS63 machine screws use?
Hex head with a slot in the top, so you can run them with a 1/4 inch nut driver or a flat blade screwdriver. Across-flats head width is 0.244 to 0.250 inch and head height is 0.080 to 0.093 inch, which is why a 1/4 inch driver seats correctly.
4) Are these Metallics hex machine screws plated for corrosion resistance, and can I use them outdoors?
They are steel with a zinc finish. Zinc plating handles indoor and damp-location service and resists handling corrosion in a jar on the truck. For direct weather exposure or wet locations, stainless is the better choice.
5) How are the JHHMS63 screws packaged and what is the minimum I can buy?
They ship in a jar of 100 pieces, and 100 count is the order minimum. The jar runs 3 inches long by 2.15 inches by 76.2 mm and weighs 204 g, so it drops into a service van bin or a parts organizer without repacking.
6) What dimensional standard do these 6-32 hex machine screws conform to?
Dimensions follow ASME B18.6.3-2002, the standard for machine screws, with threads to ANSI/ASME B1.1. If your drawing calls out B18.6.3 slotted hex head machine screws, the JHHMS63 answers that callout at 6-32 x 1.
7) What size hole do I need to clear the JHHMS63 shank, and will the head cover an oversized hole?
Fastener width across the thread is 0.272 and the washer-face outside diameter under the head is 0.302 to 0.328 inch. A standard No. 6 clearance hole passes the shank; because the bearing surface is only about a third of an inch across, a slotted or enlarged hole in sheet metal needs a separate washer to bridge it.
How fast can I get the Metallics JHHMS63 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 JHHMS63 come with a warranty?
Absolutely. The Metallics JHHMS63 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 JHHMS63?
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selection,
installation tips, and troubleshooting. Contact Us
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