Metallics JTSF30 10 x 1-1/2 in. Flat Head Phillips Tapping Screws - Steel Zinc - Each

Type A is a coarse-threaded sheet metal tapping screw with a gimlet (pointed) tip, which lets it start in a pilot hole in thin sheet metal and form its own thread as it drives. The JTSF30 runs 12 threads per inch on a #10 diameter. That thread spacing and the point type make it a sheet metal and light-gauge fastener, not a machine screw for tapped holes and not a concrete or masonry anchor.

No. The JTSF30 is not Buy American compliant and not ARRA compliant, with country of origin listed as multiple. If your project carries domestic-sourcing requirements, this part will not satisfy them and you will need a domestically produced fastener.

A #2 Phillips. The recess measures 0.198 in. diameter and 0.124 in. deep, which is standard #2 geometry, so a worn #1 or an oversized #3 will cam out and chew the recess. One #2 bit covers the whole run.

It ships in a jar of 100 pieces, and 100 is the order minimum. The jar weighs 0.85 lbs. Handy for a van or a shop bin rather than a bulk box.

Torsional strength is 48 lb-in minimum with a case hardness of Rockwell C28-38, which is the ASME-specified minimum for a #10 Type A screw. That is adequate for a driver run at sensible speed and clutch setting, but a high-torque impact on a bottomed-out screw will still twist a head off any screw in this class.

The JTSF30 is zinc-plated carbon steel (AISI 1016-1024). Zinc plating handles indoor and sheltered use, including damp mechanical and HVAC spaces, but it is not a marine or sustained-wet finish. For direct weather exposure or coastal work, go to a stainless fastener instead.

Yes. Dimensions conform to ASME B18.6.4-1998 and the threads to ASME B18.6.4, so head, recess and thread geometry are to a published standard you can reference on a submittal. Note that Metallics states dimensions for its #9 diameter screws fall outside B18.6.4; the #10 JTSF30 is within it.

Metallics lists the JTSF series for electrical, plumbing, and heating and air conditioning work. In practice that is sheet metal duct and plenum work, mounting straps and brackets, panel and enclosure covers, and attaching light fixtures or device plates to sheet metal where a flush countersunk head is wanted. The 1-1/2 in. length suits stacking through a spacer or into a wood blocking member behind the sheet.