#8 x 1-5/8" Drywall Screw For Particle Board - Phillips Recess Bugle Hd - Blk Phos. - UNC - 2000 Pk

8X1 5/8 Bugle Square Drive Course Thread Type 17 Point Deck Screw 18 8 Stainless Steel. Type-17 used in decking materials including woods with medium density and composite materials. Bugle head screws are commonly used for drywall because it distributes bearing stress over a wider area than a flat head.

8X5/8 Phillips Flat Undercut Full Thread Self Drilling Screw Zinc Bake. Self drilling screws have point to cut through material and eleiminate the need to drill a pilot hole. Flat undercut heads are used when a flat head is desired on shorter length screws.

10-24 X 7/8 MS51957, NAS-1635 Phil Pan Machine Screw Coarse Full Thread 300 Series S/S DFAR. Pan head screws are a common style that can substituted in most applications for round, truss or binding heads.

A bugle head screw with a double-lead, consisting of a high and low thread with an extra sharp point and black phosphate finish. The lower thread varies in height from 1/3 to 1/2 that of the higher thread, which is sharper and flatter than a standard thread. Requires less torque to drive than a standard twinfast drywall screw. The high-low thread is more resistant to vibration and reduces the chance of heads popping.

Machine screws have a uniform diameter the entire length of the shaft as opposed to tapered screws which have a pointed tip. Machine screws are typically used with a threaded hole to secure two parts together. Machine screws are fully threaded for use with a nut or in a tapped hole.