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Bolts 1/4-20 X 3/4 Hx Sl 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
- Driver Size:
- 3
- Fastener Head Color:
- Silver
- Fastener Head Height:
- 0.190-0.172 in.
- Fastener Head Type:
- Hex
- Fastener Head Width:
- 0.367 - 0.375 in.
- Fastener Height:
- 0.172 - 0.190
- Fastener Length:
- 4-Mar
- Fastener Width:
- 0.409
- Language Code:
- EN
- Neurspe:
- https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Hex_Head_Slotted_Machine_Screw_St-Zn.pdf
- Order Minimum Imperial:
- 1000
- Order Minimum Uom Imperial:
- TH
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 6 in
- Product Length:
- 7.25 in
- Product Weight:
- 5788 g
- Product Width:
- 158.75 MM
- Sub Division:
- Electrical-E H2
- Thread Per Inch:
- 20
- Thread Pitch:
- 0.25
- Thread Standard:
- ANSI/ASME B1.1
- Thread Type:
- UNC
- Washer Od:
- 0.480 - 0.520 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 JHHMS89 – Frequently Asked Questions
1) What wrench or driver do I need for these 1/4-20 hex slotted machine screws?
The hex head measures 0.367 to 0.375 inch across the flats, so a 3/8 inch wrench or socket fits. It is also slotted on top, taking a No. 3 slotted driver, so you can start and seat it with a screwdriver and finish with the wrench where you need torque in a tight enclosure.
2) Do these Metallics machine screws meet Buy American and ARRA requirements for a federal job?
Yes, the JHHMS89 is flagged both Buy American compliant and ARRA compliant, which is what a government or federally funded institutional spec usually asks for on fasteners. Country of origin is listed as multiple, so if your submittal needs a single named origin, confirm it on the lot you receive.
3) Are these zinc plated steel, and can I use them outdoors?
Steel with a zinc finish. Zinc plating is a general-purpose indoor and dry-location coating; it resists handling corrosion and damp interior air, but for wet, coastal or continuously exposed outdoor use you want stainless or hot-dip galvanized fasteners instead.
4) How do these come packaged, and can I get them in bulk or other sizes?
They ship in a jar of 100, which is the handy count for a service van or a shop bin. Other sizes and quantities are available by request, and the bulk order minimum on this series is 1,000 pieces.
5) Is this a bolt or a machine screw, and what standard is it built to?
Despite being catalogued with bolts, the JHHMS89 is a hex head slotted machine screw, dimensioned to ASME B18.6.3-2002. That is the machine screw standard, so head and slot dimensions match what an electrical or panel spec calling out a B18.6.3 hex machine screw expects, not the heavier B18.2.1 hex bolt dimensions.
6) What washer should I pair with these screws?
A flat washer with a 0.480 to 0.520 inch outside diameter is the matched size for this 1/4-20 screw. Anything much larger will overhang a small cover ear or interfere with an adjacent device; anything smaller gives up bearing area on sheet metal.
How fast can I get the Metallics JHHMS89 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 JHHMS89 come with a warranty?
Absolutely. The Metallics JHHMS89 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 JHHMS89?
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 JHHMS89 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.