Metallics JFM99 1/4-20 x 1/2 i...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
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Metallics JFM99 1/4-20 x 1/2 in. Flat Head Slotted Machine Screws - Steel Zinc - 100qty

Metallics JFM99 1/4-20 x 1/2 in. Flat Head Slotted Machine Screws - Steel Zinc - Each

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Model: JFM99
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$50.17
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1/4-20 x 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

    • Zinc yellow screws are popular in electronics applications.
    • Steel Zinc Material
    • Flat head with slotted Drive
    • 1/4-20 Diameter, 1/2" Length

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:
0.131 - 0.153 in.
Fastener Head Type:
Flat
Fastener Head Width:
0.442 - 0.477 in.
Fastener Length:
2-Jan
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:
2.15 in
Product Length:
3 in
Product Weight:
0.89 lbs
Product Width:
3 in
Slot Depth:
0.046 - 0.07
Slot Width:
0.064 - 0.075
Sub Division:
Electrical-E H2
Tensile Strength:
1900 lb minimum
Thread Per Inch:
20
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 JFM99 – Frequently Asked Questions

1) Will a 1/4-20 x 1/2 in. flat head machine screw thread into a standard 1/4-20 tapped hole or nut?
Yes. The Metallics JFM99 is cut to UNC threads at 20 threads per inch to ANSI/ASME B1.1, so it mates with any standard 1/4-20 coarse tapped hole, nut, or threaded insert. Thread form is the standard Unified coarse series, not metric and not fine pitch.
2) Are these screws Buy American or ARRA compliant for a government job?
No. The JFM99 flat head machine screws are not Buy American compliant and are not ARRA compliant, with multiple countries of origin. If your contract carries a domestic sourcing clause, these will not qualify.
3) Can I use zinc plated steel machine screws outdoors or in a wet location?
These are zinc plated carbon steel, which is a mild corrosion barrier meant for dry indoor use, panel work, and enclosure interiors. In a damp, washdown, coastal, or buried application the plating will eventually sacrifice and the AISI 1006-1022 steel underneath will rust. Specify stainless for those openings instead.
4) Are 1/4-20 flat head slotted machine screws the right choice for electrical device and enclosure work?
Yes, these are intended for electrical, plumbing, and HVAC work, and the flush flat head matters when a cover or faceplate has to seat tight with nothing standing proud. Use a round or pan head instead if the hole is not countersunk, since a flat head in a flat hole only bears on the edge of the head and will not clamp evenly.
5) How are these machine screws packaged and what is the minimum I can order?
They ship in a jar, with an order minimum of one jar of 100 pieces at about 0.89 lb. The jar is a shop or truck-stock pack rather than a bulk box, so if you are standardizing a facility on 1/4-20 flat heads you order in jar multiples.
How fast can I get the Metallics JFM99 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 JFM99 come with a warranty?
Absolutely. The Metallics JFM99 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 JFM99?
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 JFM99 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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