Metallics JFM78 3/8-16 x 1-1/2...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$192.86
Metallics JFM78 3/8-16 x 1-1/2 in. Flat Head Slotted Machine Screws - Steel Zinc - 100qty

Metallics JFM78 3/8-16 x 1-1/2 in. Flat Head Slotted Machine Screws - Steel Zinc - Each

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Model: JFM78
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$192.86
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3/8-16 x 1-1/2 in. Flat Head Slotted Machine Screws - Steel Zinc - 100qty

  • Additional Notes

    • Other sizes and quantities available by request | Hardness and tensile strength standards are offered as guides only for stainless machine screws. There is currently no national standard for these performance requirements for stainless machine screws.

  • Features

    • Flat head with slotted Drive
    • Zinc yellow screws are popular in electronics applications.
    • 3/8-16 Diameter, 1-1/2" Length
    • Steel Zinc Material

Manufacturer Resources

Product Specs

Minimum Purchase:
100 units
Arra Compliant:
N
Buy American Compliant:
No
Dimensional Standard:
ASME B18.6.3-1998
Division:
Electrical H1
Drive Type:
Slotted
Fastener Head Height:
0.2 - 0.23 in.
Fastener Head Type:
Flat
Fastener Head Width:
0.67 - 0.717 in.
Fastener Length:
1/1/02
Field Application:
Electrical, Plumbing, Heating and Air Conditioning Industries
Hardness:
Rockwell B70-B100
Language Code:
EN
Material Standard:
AISI 1006 - 1022
Neurspe:
https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Flat_Head_Mach_Screw.pdf
Order Minimum Imperial:
100
Order Minimum Uom Imperial:
JR
Pack Type:
Jar
Product Group:
Fasteners
Product Height:
5.75 in
Product Length:
3.5 in
Product Weight:
5.41 lbs
Product Width:
3.5 in
Slot Depth:
0.07 - 0.106
Slot Width:
0.081 - 0.094
Sub Division:
Electrical-E H2
Tensile Strength:
4650 lb minimum
Thread Per Inch:
16
Thread Standard:
ANSI/ASME B1.1
Thread Type:
UNC
Department:
Electrical
Product Subgroup:
Screws
Product Type:
Machine Screw
Type2:
Machine Screw
Series:
FM and FMP
Product Finish:
Zinc
Product Details:
Machine Screw
Product Material:
Steel Zinc

Metallics JFM78 – Frequently Asked Questions

1) Will a 3/8-16 machine screw thread into a standard 3/8 inch coarse tapped hole or nut?
Yes. The Metallics JFM78 machine screw is a 3/8-16 UNC thread cut to ANSI/ASME B1.1, 16 threads per inch, so it mates with any standard 3/8-16 coarse tapped hole, nut, or strut channel nut. It will not run into a 3/8-24 fine thread.
2) How big is the head on the JFM78 flat head screw, and will it sit flush?
The flat head measures 0.67 to 0.717 inches across and 0.2 to 0.23 inches in head height. Flat head means it is countersunk, so it sits flush only in a hole with an 82 degree countersink matched to that head diameter. Drop it into a plain drilled hole and the head will stand proud.
3) Can I use the JFM78 machine screw on a federally funded or Buy American job?
No. The JFM78 is marked not Buy American compliant and not ARRA compliant, with country of origin listed as multiple. If your contract carries a domestic sourcing clause, this screw will not satisfy it and you need a domestically produced 3/8-16 machine screw instead.
4) Are these flat head machine screws OK outdoors or in a damp location?
Material is zinc plated steel with a zinc finish, which is a dry-location corrosion coating. It handles indoor electrical, plumbing and HVAC work fine, but zinc plating will rust in standing moisture, washdown, or coastal exposure. For wet or corrosive locations use a stainless machine screw of the same 3/8-16 x 1-1/2 in. size instead.
5) Do these machine screws come loose or in a pack, and what is the minimum order?
The JFM78 ships in a jar, with a minimum order of 100 per jar. These are not sold as individual loose pieces, so plan on the full jar for the job.
6) Do these screws meet a recognized dimensional spec for submittals?
Head, slot and thread dimensions follow ASME B18.6.3-1998 for slotted flat head machine screws, with threads to ANSI/ASME B1.1 and steel to AISI 1006 to 1022. That is the set of standards to cite on a submittal for the Metallics FM and FMP series.
7) What kind of work are these 3/8-16 x 1-1/2 in. flat head screws meant for?
Metallics lists the field application as the electrical, plumbing, heating and air conditioning trades. Typical use is fastening boxes, covers, enclosures, channel and bracketry where a countersunk head has to finish flush and a slotted driver is what is on the belt. At 1-1/2 inches of length under the head, there is room to pass through a plate plus a spacer and still pick up several threads.
How fast can I get the Metallics JFM78 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 JFM78 come with a warranty?
Absolutely. The Metallics JFM78 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 JFM78?
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 JFM78 from ZenSupply?
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