1/4-20 x 1-1/4 in. Flat Head Phillips 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
- 1/4-20 Diameter, 1-1/4" Length
- Zinc yellow screws are popular in electronics applications.
- Steel Zinc Material
- Flat head with Phillips Drive
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:
- 1/1/04
- Gaging Diameter:
- 0.424
- Hardness:
- Rockwell B70-B100
- Language Code:
- EN
- Material Standard:
- AISI 1006 - 1022
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- CT
- Pack Type:
- Jar
- Phillips Recess Depth:
- 0.16
- Phillips Recess Diameter:
- 0.276
- Phillips Recess Width:
- 0.036
- Product Group:
- Fasteners
- 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 JFMP102 – Frequently Asked Questions
1) What thread does the Metallics JFMP102 machine screw use, and will it thread into a standard 1/4-20 tapped box or strut nut?
It's a 1/4-20 UNC thread, 20 threads per inch, made to ANSI/ASME B1.1. That's the standard coarse 1/4 inch machine screw thread, so it threads into any 1/4-20 tapped hole, 1/4-20 strut nut, or 1/4-20 nut without an adapter. Length is 1-1/4 inches.
2) Can I use these screws on a federally funded or Buy American job?
No. The JFMP102 machine screws are not Buy American compliant and are not ARRA compliant, with country of origin listed as multiple. If your contract carries a domestic sourcing clause, you'll need a domestically produced fastener instead.
3) What size Phillips driver do I need for these 1/4-20 flat head screws?
A #3 Phillips. The recess is 0.276 inches in diameter and 0.16 inches deep, so a #2 bit will bottom out and cam out under torque. Keep #3 bits on the cart if you're running these by drill.
4) Is the zinc finish on these screws okay for outdoor or wet locations?
The finish is zinc plating over low carbon steel, which is a dry indoor or protected finish. For wet locations, damp exterior boxes or corrosive environments, go with a stainless machine screw in the same 1/4-20 x 1-1/4 size instead, zinc plating will eventually rust through in standing moisture.
5) What's the difference between a machine screw like this and a self-tapping sheet metal screw?
A 1/4-20 UNC machine screw has a straight, uniform machine thread and needs a tapped hole or a nut on the back side, it will not cut its own thread in sheet metal. If you're fastening into a pre-tapped box, strut nut, or threaded insert, this is the right part. If you're driving into untapped sheet metal or a punched hole with no nut behind it, use a self-tapping or thread cutting screw instead.
6) How are the Metallics JFMP102 screws packaged and what's the minimum order?
They come in a jar of 100, and 100 count is the order minimum. Good quantity for a service van or a shop bin rather than a one off repair.
7) Do these 1/4-20 Phillips flat head screws meet a dimensional spec I can submit?
Yes. Head and drive geometry follow ASME B18.6.3-1998 and the thread follows ANSI/ASME B1.1, with a gaging diameter of 0.424 and protrusion gaging of 0.029 to 0.050 above. Those are the figures to cite if a submittal or QA check asks for conformance on the fastener.
8) Can I get this 1/4-20 flat head Phillips screw in other lengths or pack sizes?
The JFMP102 is the 1/4-20 x 1-1/4 inch size in a 100 count jar, and it's part of the Metallics FM and FMP machine screw series. Other sizes and quantities in that series are available by request.
How fast can I get the Metallics JFMP102 delivered?
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Does the Metallics JFMP102 come with a warranty?
Absolutely. The Metallics JFMP102 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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