1/4-20 x 1-1/2 in. Flat Head Phillips Machine Screws - Steel Zinc - 100qty
Features
- Steel Zinc Material
- Flat head with Phillips Drive
- 1/4-20 Diameter, 1-1/2" Length
- Zinc yellow screws are popular in electronics applications.
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.
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:
- Phillips
- Driver Size:
- #3
- Fastener Head Height:
- 0.131 - 0.153 in.
- Fastener Head Type:
- Flat
- Fastener Head Width:
- 0.442 - 0.477 in.
- Fastener Length:
- 1/1/02
- Field Application:
- Electrical, Plumbing, Heating and Air Conditioning Industries
- Gaging Diameter:
- 0.424
- 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
- Phillips Recess Depth:
- 0.16
- Phillips Recess Diameter:
- 0.276
- Phillips Recess Width:
- 0.036
- Product Group:
- Fasteners
- Product Height:
- 3.6 in
- Product Length:
- 3 in
- Product Weight:
- 1.77 lbs
- Product Width:
- 3 in
- Protrusion Gaging Diameter:
- 0.029 - 0.050 Above
- 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 JFMP103 – Frequently Asked Questions
1) What driver bit do I need for the Metallics JFMP103 1/4-20 flat head Phillips machine screw?
A #3 Phillips bit. The recess on the JFMP103 is 0.276 inch in diameter, 0.16 inch deep, and 0.036 inch wide, so a #2 bit will cam out and chew the recess under any real torque. Stock #3 tips if you are running a jar of these with a driver.
2) Will a 1/4-20 flat head machine screw sit flush in a countersunk box or enclosure hole?
It will if the countersink is cut for a standard 82 degree flat head. The JFMP103 head measures 0.442 to 0.477 inch across and 0.131 to 0.153 inch high, built to ASME B18.6.3-1998, so it drops flush in any hole countersunk to that dimensional standard. On a plain drilled hole with no countersink the head will stand proud by roughly its head height.
3) Does this 1/4-20 screw thread into a standard strut nut or threaded insert, or does it need a tapped hole?
The JFMP103 is a 1/4-20 UNC machine screw cut to ANSI/ASME B1.1, 20 threads per inch, so it mates with any 1/4-20 UNC nut, strut channel nut, or tapped 1/4-20 hole. It is a machine screw, not a self-tapping or sheet metal screw, so it will not form its own thread in untapped stock.
4) Will these screws pass a Buy American or ARRA requirement on a government job?
No. The JFMP103 is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. If your contract carries a domestic sourcing clause, this fastener will not satisfy it.
5) How much load will a 1/4-20 zinc plated steel machine screw hold?
1900 lb minimum tensile on the JFMP103, with a hardness of Rockwell B70 to B100 and low carbon steel to AISI 1006-1022. That is a general purpose fastener figure, not a structural bolt rating, so use it for enclosure, device, and equipment mounting rather than anything the drawing calls out as a structural connection.
6) Is zinc plated steel okay for outdoor or damp locations, or should I spec stainless?
The JFMP103 is zinc plated low carbon steel, which is a dry indoor finish. Zinc gives light corrosion protection for panel, enclosure, and device work in conditioned space, but in wet locations, exterior boxes, or washdown areas it will rust through the plating. Go stainless for those.
7) How are these Metallics machine screws packaged, and what is the minimum I can buy?
They come in a jar of 100, and the jar is the minimum order unit, so you buy in full 100 piece jars rather than loose counts. Packed weight is 1.77 lbs.
How fast can I get the Metallics JFMP103 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 JFMP103 come with a warranty?
Absolutely. The Metallics JFMP103 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 JFMP103?
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