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Bolts 10-32 x 1/2 Hx MS 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:
- ASME B18.6.3-2002
- Division:
- Electrical H1
- Drive Type:
- Slotted
- Fastener Head Type:
- Hex
- Fastener Head Width:
- 0.305 - 0.312 in.
- Fastener Height:
- 0.105 - 0.120
- Fastener Length:
- 2-Jan
- Fastener Width:
- 0.34
- 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:
- 263 g
- Product Width:
- 76.2 MM
- Sub Division:
- Electrical-E H2
- Thread Per Inch:
- 32
- Thread Pitch:
- 0.19
- Thread Standard:
- ANSI/ASME B1.1
- Thread Type:
- UNF
- Washer Od:
- 0.384 - 0.414 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 JHHMS33 – Frequently Asked Questions
1) Do these screws meet Buy American or ARRA requirements for a government or public job?
The JHHMS33 is flagged compliant for both ARRA and Buy American in the product record. Country of origin is China. If your specification demands domestic melt and manufacture rather than the compliance flag, verify against your contract language before you submit.
2) Can I drive these hex head machine screws with a screwdriver, or do I need a wrench?
Both work. The head is hex but it is also slotted, so an electrician can run it with a flat blade screwdriver in a panel or reach it with a 5/16 wrench or driver where the slot is hard to get at. Head width measures 0.305 to 0.312 inch, which is a 5/16 nominal hex.
3) Are these zinc plated steel screws OK for damp or outdoor electrical work?
Material is steel with a zinc finish. Zinc plating handles indoor and protected damp locations fine, but it is not a stainless or hot dip coating, so for direct weather exposure, coastal air, or wet locations a stainless 10-32 is the better call.
4) How many Metallics JHHMS33 screws come in a jar, and is there a minimum order?
They ship 100 to the jar, and 100 count is the order minimum. Jar packaging keeps them from scattering in a van drawer or on a service cart. Other sizes and quantities are available by request.
5) Is the 10-32 thread on this Metallics screw coarse or fine?
Fine. The thread type is UNF at 32 threads per inch with a 0.19 pitch value listed. That matters if you are matching to a nut or tapped strap already on the job, since a coarse UNC nut will not run on it.
6) What dimensional standard do these hex machine screws follow, and will the head clear a tight device opening?
Dimensions follow ASME B18.6.3-2002 for slotted and recessed head machine screws. Head width runs 0.305 to 0.312 inch with a head height of 0.105 to 0.120 inch, so the profile sits low enough to clear most plaster rings and device yokes. Washer face OD is 0.384 to 0.414 inch if you are checking bearing area against a slotted hole.
7) How much does a 100 count jar of these 10-32 screws weigh for shipping or a stocking cart?
A jar runs about 263 grams, roughly 9.3 ounces, for the full 100 count. Light enough to keep several thread lengths on a service truck without adding meaningful load.
How fast can I get the Metallics JHHMS33 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 JHHMS33 come with a warranty?
Absolutely. The Metallics JHHMS33 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 JHHMS33?
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 JHHMS33 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.