Metallics JPMP104 1/4-20 x 2 in. Pan Head Phillips Machine Screws - Steel Zinc - Each

The JPMP104 ships as a jar of 100 screws, and the jar is the order minimum. The packed jar weighs 2.67 lbs, so for a job needing a few hundred 1/4-20 x 2 in. pan heads you are ordering in multiples of 100.

Yes. The thread is 1/4-20 UNC, 20 threads per inch, so it mates with any 1/4-20 tapped hole, channel nut, or strut nut. Machine screws have no point, so the hole has to be tapped or you need a nut behind it, they will not cut their own thread.

These are zinc plated carbon steel, AISI 1006-1022 stock. Zinc plating is a mild indoor and dry location coating, it will rust in standing water, washdown, or coastal exposure. For damp, exterior, or corrosive service, go to a stainless 1/4-20 x 2 in. pan head Phillips instead and accept the lower, less standardized tensile values stainless carries.

Tensile strength is 60,000 psi minimum with a hardness of Rockwell B70-B100, which is ordinary low carbon commercial grade, roughly in line with an SAE Grade 2 fastener. Fine for mounting devices, boxes, straps, covers, and light hangers. For engineered structural or seismic hanger loads where a calc specifies Grade 5 or Grade 8, these do not meet that.

No. The JPMP104 is listed as not Buy American compliant and not ARRA compliant, with multiple countries of origin. If your spec carries a domestic sourcing clause, this part will not clear submittal.

A #3 Phillips bit. The recess diameter is 0.274 in. with a gaging depth of 0.118 to 0.144 in., so a #2 bit will cam out and chew the recess under any real torque. Keep a #3 in the pouch if you are running these with an impact or a drill.

The pan head measures 0.473 to 0.492 in. across and sits 0.162 to 0.175 in. proud of the surface. That roughly half inch head diameter is what spreads load over a slotted or oversized hole, which is why it is the common choice for mounting plates and device straps rather than a flat head that needs a countersink.

Head and recess dimensions follow ASME B18.6.3-2010, the standard for inch series machine screws. That means the 0.473 to 0.492 in. head and #3 Phillips recess are interchangeable with any other B18.6.3 1/4-20 pan head, so they drop into existing hardware and submittals calling out that standard.

The PMP pan head Phillips line is aimed at the electrical, plumbing, and HVAC trades, which is why it comes jarred in 100 counts rather than bulk boxed. Typical use is device and plate mounting, strap and clamp attachment, and panel work where a 1/4-20 tapped hole or nut is already there.