3/8-16 x 3/4 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.
- 3/8-16 Diameter, 3/4" Length
- Flat head with slotted Drive
- 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:
- 4-Mar
- 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:
- 3.6 in
- Product Length:
- 3 in
- Product Weight:
- 2.958 lbs
- Product Width:
- 3 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 JFM51 – Frequently Asked Questions
1) Will a 3/8-16 machine screw thread into a standard 3/8 inch UNC tapped hole or nut?
Yes. The Metallics JFM51 is cut to 3/8-16 UNC, 16 threads per inch, to ANSI/ASME B1.1, so it mates with any standard 3/8-16 coarse tapped hole, nut or strut channel nut. If the hole in your gear is 3/8-24 fine thread, this one will not start.
2) Do these machine screws meet a recognized dimensional spec for submittals?
Head, slot and thread dimensions follow ASME B18.6.3-1998 and the threads follow ANSI/ASME B1.1. That is what to cite on a submittal for a flat head slotted machine screw. Note the screws are Multiple country of origin and are not Buy American or ARRA compliant, which matters on federally funded work.
3) How many 3/8-16 x 3/4 flat head machine screws come in a jar?
They ship in a jar of 100, which is the order minimum. One jar is the smallest buy, so plan on 100 pieces per size for a stocking count.
4) Is zinc plated steel okay for outdoor or wet electrical work?
The JFM51 is zinc plated carbon steel, which is a dry or sheltered indoor finish. Zinc plating slows corrosion but it is not a marine or wash-down finish, so for exterior, damp or corrosive locations move to a stainless machine screw in the same 3/8-16 x 3/4 size.
5) How thick a material can I fasten with a 3/4 inch long machine screw?
Length is measured from the top of the flat head down, since flat heads are countersunk, so the full 3/4 in. is grip. Figure your combined material thickness plus enough thread engagement in the nut or tapped hole, usually one diameter (about 3/8 in.) in steel. Stacks much over 3/8 in. total want a longer screw.
6) What trades actually use these zinc machine screws?
Metallics lists them for the electrical, plumbing, heating and air conditioning trades, and the yellow zinc screws are common in electronics work. Typical uses are mounting devices and panels, fastening straps and brackets, and anywhere a tapped 3/8-16 hole needs a flush head.
How fast can I get the Metallics JFM51 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 JFM51 come with a warranty?
Absolutely. The Metallics JFM51 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 JFM51?
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installation tips, and troubleshooting. Contact Us
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