Metallics M50136 Anchors .300" Hd Dr Pin w TH 1/2" Knr Shk .145 (Jar 100)

The M50136 is a drive pin with a .300 inch head, a .145 inch knurled shank, and a 1/2 inch shank length. It is packaged 100 pins to a jar, so one jar covers a full day of strap, conduit clip, or box fastening on concrete or block without reordering.

With a 1/2 inch shank, the M50136 gives you roughly 1/2 inch of total penetration, which covers thin items like a one-hole conduit strap, a device box ear, or a cable clip held tight against solid concrete or block. If you are shooting through furring, drywall, or a shim, that 1/2 inch gets eaten up by the standoff and you want a longer pin instead.

It is a drive pin, not an expansion anchor. There is no sleeve to set and no nut to torque. The .145 inch knurled shank is driven into the base material and holds on friction and knurl bite alone, so you size the hole to the pin shank rather than to an anchor body, and the .300 inch head bears directly on the strap or clip you are fastening.

The knurl on the .145 inch shank is what gives the pin its grip. Once driven, the ridges bite the wall of the hole in concrete or masonry and resist pull-out and vibration back-out, which is why a knurled drive pin holds in a drilled or powder-driven hole without any expansion sleeve or threading.

Order by Metallics part number M50136. That number covers the .300 inch head, .145 inch knurled shank, 1/2 inch length pin in the 100 count jar, so a purchasing agent standardizing a stockroom only needs the one designation.