Metallics JPMP42 10-24 x 1-1/4 in. Pan Head Phillips Machine Screws - Steel Zinc - Each

Yes. The Metallics JPMP42 is a 10-24 UNC thread machine screw, which is the thread used on standard outlet box, device and cover mounting holes in the US. Thread count is 24 per inch and the thread form is UNC, so it mates with 10-24 tapped holes in boxes, mud rings, and fixture straps.

A #2 Phillips bit. The recess is a Phillips drive with a 0.192 in. recess diameter and a gaging depth of 0.089 to 0.113 in., so a #2 seats fully without cam-out. A #1 will spin out and a #3 will not bottom.

Head height runs 0.122 to 0.133 in. and head width 0.357 to 0.373 in. That low, broad profile spreads bearing load on sheet metal and plastic plates without the countersink a flat head would need, and it clears most device plate openings.

It carries a 60,000 psi minimum tensile strength with a Rockwell B70 to B100 hardness, made from AISI 1006 to 1022 low carbon steel. That is a standard-strength commercial fastener for device, box, fixture and panel mounting. It is not a graded high-strength bolt, so do not substitute it where a drawing calls for a Grade 5 or Grade 8 fastener.

These are zinc plated carbon steel, silver in appearance. Zinc plating handles dry interior and protected locations well, but it is a sacrificial coating. For wet locations, exterior work, or corrosive and coastal environments, specify a stainless machine screw in the same 10-24 x 1-1/4 in. size instead.

Yes. They are manufactured to ASME B18.6.3-2010, the dimensional standard for inch-series machine screws and tapping screws, with material to AISI 1006 to 1022. That is the reference to put on a submittal or MRO spec sheet when standardizing fasteners across a facility.

The JPMP42 machine screws are flagged compliant for both Buy American and ARRA. Country of origin is listed as multiple, so if your contract requires a single named country of manufacture on the certification, confirm the origin on the lot you receive.

A machine screw like the JPMP42 has a uniform UNC machine thread with a blunt end. It needs a pre-tapped hole or a nut, and it will not cut its own thread. Sheet metal and self-tapping screws form their own thread in unthreaded material. Use the 10-24 machine screw into factory-tapped box ears, straps, channel nuts and panels; use a tapping screw where you are driving into bare sheet.

They ship in a jar of 100 pieces, and 100 count is the order minimum. Shipped package weight is 0.95 lbs. Good fit for a service van or a shop bin rather than buying loose by the piece.