Metallics JFM38 5-40 x 5/8 in....
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
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Metallics JFM38 5-40 x 5/8 in. Flat Head Slotted Machine Screws - Steel Zinc - 100qty

Metallics JFM38 5-40 x 5/8 in. Flat Head Slotted Machine Screws - Steel Zinc - Each

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Model: JFM38
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$50.16
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5-40 x 5/8 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

    • Zinc yellow screws are popular in electronics applications.
    • Steel Zinc Material
    • Flat head with slotted Drive
    • 5-40 Diameter, 5/8" Length

Manufacturer Resources

Product Specs

Minimum Purchase:
100 units
Arra Compliant:
C
Buy American Compliant:
C
Dimensional Standard:
ASME B18.6.3-1998
Division:
Electrical H1
Drive Type:
Slotted
Fastener Head Height:
0.062 - 0.075 in.
Fastener Head Type:
Flat
Fastener Head Width:
0.215 - 0.237 in.
Fastener Length:
8-May
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:
CT
Pack Type:
Jar
Product Group:
Fasteners
Product Height:
2.15 in
Product Length:
3 in
Product Weight:
0.23 lbs
Product Width:
3 in
Slot Depth:
0.022 - 0.034
Slot Width:
0.035 - 0.043
Sub Division:
Electrical-E H2
Tensile Strength:
470 lb minimum
Thread Per Inch:
40
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 JFM38 – Frequently Asked Questions

1) What thread does the Metallics JFM38 machine screw take, and will it run into a 5-40 tapped hole?
The JFM38 is a 5-40 UNC machine screw, 40 threads per inch, made to the ANSI/ASME B1.1 thread standard. It threads into any clean 5-40 tapped hole or 5-40 nut. It is a machine screw, not a self-tapping screw, so the hole has to be tapped or threaded already.
2) Are these zinc plated steel screws suitable for outdoor or wet locations?
The JFM38 is AISI 1006-1022 carbon steel with a zinc finish. Zinc plating is a mild indoor corrosion coating, so it holds up fine in panels, device boxes and dry interior work but will eventually rust in weather, washdown or coastal exposure. For wet or exterior locations go to a stainless machine screw in the same 5-40 x 5/8 in. size.
3) Will the JFM38 interchange with another manufacturer's 5-40 x 5/8 flat head slotted screw?
Dimensionally yes. These are built to ASME B18.6.3-1998, the inch machine screw dimensional standard, with B1.1 threads, so head diameter, head height, slot and thread all fall in the same tolerance band as any other B18.6.3 5-40 x 5/8 in. flat head slotted screw. Hardness runs Rockwell B70-B100 with 470 lb minimum tensile.
4) Do I have to buy a full jar of the JFM38, or can I get just a few?
These ship in a jar with a 100-count minimum, so the smallest order is one jar of 100. Metallics does offer other sizes and quantities by request.
5) Do these Metallics machine screws meet Buy American and ARRA requirements for a public project?
The JFM38 is flagged compliant for both ARRA and Buy American in the manufacturer's data. Country of origin is listed as China, so if your specification requires domestic melt and manufacture rather than the ARRA/Buy American compliance flag, verify against the project's exact clause.
6) What is a 5-40 x 5/8 flat head slotted screw typically used for in electrical work?
Number 5 screws are small-gauge fasteners, and the zinc yellow version of this family is common in electronics work. Typical use is securing small plates, brackets, terminal strips and device components where the head must sit flush in a countersunk hole and the tapped thread is 5-40. For standard device and cover plate work the usual sizes are 6-32 and 8-32, so confirm the tapped hole is really 5-40 before ordering.
7) How much does a jar of the Metallics JFM38 screws weigh for shipping?
Listed product weight is 0.23 lbs for the jar, with jar dimensions of 3 in. by 3 in. by 2.15 in. Light enough that shipping a handful of jars for a multi-site MRO stock order is trivial.
How fast can I get the Metallics JFM38 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 JFM38 come with a warranty?
Absolutely. The Metallics JFM38 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 JFM38?
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 JFM38 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.
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