Iveco DAILY M.Y. 2012, Body Builder Instructions, Page: 35 / 252

CHASSIS MODIFICATIONS
2-9
D
AILY
Printed 603.95.241 Base — 02/2012
Drills on the chassis
2.2.2 Screws and nuts
In general, it is recommended to make connections of the the same type and class as those foreseen for similar fastenings on
the original vehicle (Table 2.4).
Screws of class 8.8 and 10.9 must be hardened and tempered and, for applications with diameter ≤ 6 mm, it is recommended to
use stainless steel parts.
The foreseen coatings are Geomet and galvanisation. If the screws are subjected to welding, the Geomet coating is not
recommended.
If space permits, use screws and nuts with a flanged head.
Use nuts with loosening prevention systems and remember that the tightening torque must be applied to the nut.
Table 2.4 - Screw resistance classes
Resistance class Use
Ultimate tensile strength
(N/mm
2
)
Yield strength (N/mm
2
)
4.8 Non-load bearing screws 400 320
5.8 Low resistance screws 500 400
8.8
Medium resistance screws
(cross members, cut
resistance plates, brackets)
800 640
10.9
High resistance screws (spring
mounts, stabilizer bars and
shock absorbers)
1000 900