Phillips Countersunk Head Self Drilling Screw

Size：

M3.5, M3.9, M4.2, M4.5, M4.8, M5.5, M6.3.

#6, #7, #8, #9, #10, #12, #14 (1/4″).

Length：9.5mm -300mm 7/16″ -11″.

Material：Carbon C1022 Steel, Case Harden

Head Type：hex washer head, hex flange head.

Thread Type：full thread, partial thread

PRODUCT DETAILS:

Diameter Size (d)	#6 (M3.5)	#8 (M4.2)	#10 (M4.8)	#12 (M5.5)	#14 (M6.3)
Head Diameter	6.8MM	8.1MM	9.5MM	10.8MM	12.4MM
Head Height	2.1MM	2.5MM	3.0MM	3.4MM	3.8MM
Length	3/8 1/2 5/8 3/4 1″ ·	1/2 5/8 3/4 1″ 1-1/4 1-1/2 1-3/4 2″ 2-1/2	5/8 3/4 1″ 1-1/2 1-3/4 2″ 2-1/2	3/4 1″ 1-1/4 1-1/2 1-3/4 2″ 2-1/2	7/8 1-1/2 2″ 2-1/2

Self-drilling screw is a high-quality screw designed for metal-to-metal fastening jobs. The self-drilling tip easily drills through metal without any pre-drilling required. The flat head is designed for countersunk fixtures and applications where the screw head needs to be flush after installation. The zinc plating is only recommended for installations in dry indoor environments.

Countersunk Roofing Screws are designed for applications where a metal-to-metal connection is required. This self-drilling fastener is made of galvanized steel/Stainless Steel 410. The zinc plating is electrically applied to the fastener, providing a protective barrier that helps prevent oxidation.

They are used for metal-to-metal fastening and are used in medium gauge metal-to-metal framing.