Metallics JDS80V 10 x 2-1/2 in. 5/16 Indented Hex Head Slotted Sharp Point Tapping Screws - Steel Zinc - Each

The JDS80V takes a 5/16 inch hex socket or nut driver. Head width across the flats measures 0.305 to 0.312 inch and 0.34 inch across the corners, so a standard 5/16 driver seats properly. It also has a slotted drive as a backup, with a slot width of 0.05 to 0.06 inch and depth of 0.057 to 0.072 inch, which takes a medium flat blade when you cannot get a socket into a tight spot.

Yes, it is an indented hex washer head. The washer flange runs 0.384 to 0.414 inch outside diameter with a thickness of 0.019 to 0.031 inch, and head height is 0.105 to 0.12 inch. That flange spreads the load over sheet metal and oversized holes, so you do not need to add a separate washer.

They ship in a jar of 500 count, and 500 is the order minimum, so the jar is the smallest unit. Total weight of a jar is 7.75 lbs.

Metallics lists the JDS80V as both ARRA compliant and Buy American compliant. Country of origin is recorded as multiple, which is normal for a fastener line produced in more than one plant, so if your submittal needs a single named origin, ask for documentation on the specific lot.

The JDS80V is case hardened to Rockwell C28-38 with a minimum torsional strength of 48 lb-in, made from AISI 1016-1024 steel. That is plenty for hand driving or a clutched screwgun, but 48 lb-in is a modest ceiling by impact driver standards, so run an impact at low torque and stop as soon as the washer head seats.

Material is steel with a zinc finish. Zinc plating handles indoor and dry-location work well, and gives short-term protection in damp conditions, but it is not a corrosion coating for sustained exterior exposure, wet locations, or coastal air. For those, specify a stainless or hot-dip galvanized tapping screw instead.

Head and body dimensions follow ASME B18.6.3-2010, and the thread conforms to ASME B18.6.4. Steel is AISI 1016-1024. Note that Metallics states dimensions for #9 diameter screws in the series are independent of ASME B18.6.4; the JDS80V is a #10, so the thread standard applies.

Yes. The JDS80V is the 10 x 2-1/2 inch size, and Metallics offers other diameters and lengths in the same indented hex head slotted sharp point line, as well as other pack quantities, by request. Give the diameter, length, and count you need and we will match the JDS part number.