Distributore BUMAX ITALIA
Viti Bulloni Alta Resistenza Meccanica

VITI CAVA ESAGONALE ISO 10642 – Bumax 88



Thread

d M3 M4 M5 M6 M8 M10 M12 M16
Pitch of thread 0.5 0.7 0.8 1 1.25 1.5 0.09375 2
dk max. 6.72 8.96 11.20 13.44 17.92 22.4 26.88 33.6
k max. 1.86 2.48 3.1 3.72 4.96 6.2 7.44 08.8
s 2 2.5 3 4 5 6 8 10
Length of thread engagement b 18 20 22 24 28 32 36 44

Screw length | Approximate weight per 100

l kg kg kg kg kg kg kg kg
6 0.4
8 0.5
10 0.6 0.11 0.19 0.26
12 0.7 0.12 0.20 0.32
16 0.8 0.15 0.26 0.36 0.74
20 0.10 0.18 0.31 0.44 0.87 1.4
25 0.22 0.36 0.53 1.0 1.7
30 0.29 0.45 0.64 1.2 1.9 2.9
35 1.3 2.2
40 0.88 1.6 2.4 3.6 6.5
45 4.1
50 0.77 1.1 2.0 3.0 7.8
60 1.3 2.5 5.5 9.2
70 3.0 6.3 11
80 13
90
100 16
Null type 0.3 0.7 0.11 0.22 0.48 1.1 1.5 2.9

Sample order: Screws above the stepped line are fully-threaded.
However we reserve the right, at our discretion, to supply all lengths in a fully-threaded design.

Packaging

Diameter M3 M4 M5 M6 M8 M10 M12 M16
No. per pack 500 200 100 100 50 50 25 25