Binding screws

Name Info.
Brass

Available in lengths from 5 mm to 80 mm; 5 and 15 mm upon request. Thread M3½.

Extension shank - brass

Thread M3½; length 10 and 15 mm

Steel - brass plated Available in length from 2 mm to 200 mm. Thread M4. The binding screw with size 3½ mm always has a groove in the top and a hole in the shank. The screw of 5 mm has a groove in both the head and the shank. All other lengths have a groove in the head (no groove in the shank).
Extension shank steel - brass plated Thread M4; length 5, 10, 15 and 20 mm.
Nickel plated Thread: M4. Length: 2 to 150 mm (even longer available upon request). Binding screws with a length of 2 / 3½ / 5 / 10 / 15 en 20 mm are steel nickel-plated. The screw with a length of 3½ mm always has a groove in the head and a hole in the shank. The 5 mm screw has a groove in both the head and the shank. From 10 mm and up the screw only has a groove in the head (not in the shank). In 5 mm length the binding screw is also available in brass nickel-plated, thread M3½ in two versions: . with a groove in the head only (shank without groove); and . with a groove in the head and a hole in the shank. Other lengths in brass nickel-plated, thread M3½, are available on request.
Extension shank nickel plated Thread M4; length 5, 10, 15, 20 or 25 mm.
Zinc coated Metal binding screws with a zinc coated surface; black. Thread M4. Available length: 2, 3½, 5, 6, 7, 8, 10, 12, 13, 15, 20, 25, 30, 35 and 40 mm. Other lengths upon request.
Plastic Available in white and black; length from 5 to 90 mm..