LI self-tapping screw for fastening thin sheets, with or without drill tip

The LI self-tapping screw is designed for fastening thin sheets to metal framing elements. The shank of the product is fitted with a standard or double-lead thread. The head has a wide shape with a cross recess and a pressed washer. The tip of the working shank can be made as a point or a drill tip.

For material thinner than 0.9 mm there is no need to pre-drill holes, the LI self-tapping screw handles this on its own. In thicker sheet, channels must be prepared in advance for easy driving of the fastener. The exception is self-tapping screws with a drill tip, which can work on their own with materials up to 4 mm thick.

Carbon steel with an anti-corrosion protective coating is used as the main raw material for manufacturing the screws. Its type is reflected in the marking:

• LI – electrogalvanic zinc-plating;
• LIK – yellow passivation;
• LIF – phosphating;
• LI-VA – head coated white.

FLOK supplies LI self-tapping screws for fastening thin sheets with a diameter of 4.2 mm and a length of 13-120 mm.

Materials:

• Carbon steel
• Coated steel:
• LI - electrogalvanic zinc-plating,
• LIK - yellow passivation,
• LIF - phosphating,
• LI-VA - coated with a white head.

Dimensions of LI self-tapping screws for thin sheets: diameter 4.2 mm, length from 13 to 120 mm.

d	3.5	4.2
PH	2	2
L
11	+
13		+
16		+
19		+
25		+
32		+
38		+
45		+
50		+
55		+
65		+
75		+
85		+
100		+

Designations:

d - thread diameter

PH - cross recess size

L - self-tapping screw length