Steel Self-Drilling Screw
Zinc-plated carbon steel hex washer head self-drilling screws manufactured to DIN 7504K / ISO 15480. The integrated drill point forms its own pilot hole in compatible thin-gauge steel, while the washer-style bearing face spreads clamping load across sheet and cladding surfaces. Available in diameters 3.5–6.3 mm.
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Available Sizes & Finishes
58 sizes available
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Applications & Selection Guide
Zinc-plated carbon-steel hex washer-head self-drilling screws to DIN 7504K / ISO 15480. An integral drill point forms the pilot hole in compatible thin-gauge steel; the washer-style bearing face spreads clamp load on sheet and cladding. Diameters 3.5–6.3 mm are listed above.
The usual fastener for purlin-to-sheet, flashing, and light-gauge steel where a separate drill operation is unwanted. Drill capacity is limited to the thin-gauge range the point is designed for — they are not structural bolts and not for thick plate or masonry. For sheet that is already punched, a DIN 7981 tapping screw may be sufficient. Pair with sealing washers if the specification requires a weathertight head.
Choose diameter × length above. Add quantity and destination to the quote cart; mention if sealing washers should be included.
Technical guides
Bolt grades and sizes: 8.8, 10.9, 12.9, A2 and A4, and metric hex bolt dimensions
What the property classes 4.8, 8.8, 10.9 and 12.9 and stainless A2-70 and A4-70 mean, minimum strength and tensile loads, metric thread pitch and hex head sizes, DIN 933 vs DIN 931, and which nut goes with which bolt.
Read the guide →Screw types compared: socket head, countersunk, set, carriage, tapping and self-drilling screws, with their DIN and ISO standards
How socket head, button head, countersunk, low-head and set screws differ, what DIN 912, ISO 7380, DIN 7991, DIN 916, DIN 603, DIN 965, DIN 7981 and DIN 7504 stand for, and which screw to order for machinery, timber and sheet metal.
Read the guide →Product Information
Material Grade
Case-hardened, self-drilling (ISO 10666)
Manufacturing Standard
DIN 7504K / ISO 15480
Material Type
Steel
Category
Self-Drilling Screw
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