Roofing Self-Tapping Screw KRS, With or Without Drill Tip, Hex Head

The KRS roofing self-tapping screw is made from either carbon steel or chromium-nickel austenitic steel grades A2 and A4. Stainless items require no additional moisture protection, while fasteners made of alloy steel have an anti-corrosion coating applied by galvanic zinc plating. KRS roofing screws are produced in two types – pointed tip and drill tip.

The fasteners are designed for fastening roofing coverings to a metal or wooden base up to 0.9 mm thick without pre-drilled holes. Thicker materials require hole preparation. Drill-tip self-tapping screws can work with materials up to 4 mm thick without preparing channels.

The KRS roofing self-tapping screw has a head for a hex wrench or a matching driver bit. The head is separated from the shank by a special EPDM washer with a weather-resistant rubber or caulk gasket. It promotes tighter contact of the fastener with the roofing surface, protecting the working hole from moisture ingress.

FLOK supplies KRS roofing self-tapping screws with shank diameters of 4.5–6.3 mm and lengths of 19–152 mm, including versions with heads painted in various colors according to the RAL color spectrum.

Materials:

• Carbon steel
• Stainless steel A2, acid-resistant steel A4
• Coated steel: galvanic zinc plating, painted head and washer (18 colors)

Dimensions of KRS roofing self-tapping screws: diameter from 4.5 to 6.3 mm, length from 19 to 152 mm.

d	4.8	5.5	6.3
L
19	+	+
25	+		+
28	+
32	+	+
35	+
38	+	+
50	+	+
51	+
65	+
70	+
76	+
80	+
105			+
110			+
130			+
150			+
175			+