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12
햶 Length 3 d only from M 3. *Further sizes available.
HELICOIL
®
Plus thread inserts comply with diverse requirements and standards from general and aerospace industries, such as DIN 8140,
DIN 65536, LN 9039 and LN 9499. Further standards (e.g. MS or EN standards) on request.
Thread types
HELICOIL
®
Plus thread technology
Materials
Note: Data only apply to uncoloured HELICOIL
®
Plus.
Up to M 5, the applied colour is temperature-resistant from –18°C to +200°C.
From M 6, the applied colour is temperature-resistant from –5°C to +120°C (+150°C short-term).
*1 N/mm² equals 1 MPa
Materials ¿
Temperature
resistance
Minimum tensile
strength at room
temperature
Examples of use
Stainless steel A 2
X5 CrNi 18 10
material No 1.4301
low temperature –196°C
short-term 425°C
long-term 315°C
1400 N/mm
2
*
n Standard applications for all property classes
and materials ¬
n General lightweight construction e.g. of
aluminium, magnesium or aluminium alloys ¡
Stainless steel A 4
X6 CrNiMoTi 17 12 2 √
material No 1.4571
low temperature –196°C
short-term 425°C
long-term 315°C
1400 N/mm
2
*
n Increased corrosion protection
n Highly alloyed CrNi steel screws ¬
n Low thread friction
n General lightweight construction
n Sea water/chlorine-containing water
Bronze
CuSN 6
material No 2.1020.34
short-term 300°C
long-term 250°C
900 N/mm
2
*
n Copper workpieces
n Moving threads
n CrNi steel screws
Inconel X 750
NiCr 15 Fe 7 TiAl √
material No 2.4669
Nimonic 90
NiCr 20 Co 18 Ti
material No 2.4632
short-term 750°C
long-term 550°C
short-term 900°C
long-term 600°C
1150 N/mm
2
*
n Thermal load in combination with corrosion
protection
n Aerospace technology
n Aeroplane engines
n Turbochargers
Aluminium
AlZnMgCu 1.5 √
material No 3.4365
short-term 170°C
long-term 150°C
500 N/mm
2
*
n Magnesium workpieces
n Vehicle technology
n Lightweight construction
햲 Further materials and surfaces on request.
햳 If magnesium alloys are used outdoors, we recommend special measures for corrosion protection.
햴 If CrNi screws are used, you should use a suitable coating or standard lubricant.
햵 Delivery on request.
The overview table shows the most common materials with specifications.
Guide values for prevailing torques according to ISO 2320
Valid for coarse threads and fine thread
Values in Nm for property class 8
Thread M 3 M 4 M 5 M 6 M 8 M 10 M 12 M 14
M 16 M 18 M 20
1
st
cycle-on, max. 0.43 0.90 1.60 3.00 6.00 10.5 15.5 24.0 32.0 42.0 54.0
1
st
cycle-off, min. 0.12 0.18 0.29 0.45 0.85 1.5 2.3 3.3 4.5 6.0 7.5
5
th
cycle-off, min. 0.08 0.12 0.20 0.30 0.60 1.0 1.6 2.3 3.0 4.2 5.3
Prevailing torques according to aerospace standards and for other metric threads on request.
Prevailing torques for HELICOIL
®
Screwlock
HELICOIL
®
Plus Free Running HELICOIL
®
Plus Screwlock
Thread
Nominal Nominal Nominal Nominal Page
diameters lengths diameters lengths
Metric ISO thread
M 2 to M 42*
0.5 d to 3 d M 2 to M 39 0.75 d to 3 d
ƒ
coarse thread
18 – 23
Metric ISO thread M 8 x 1 to
0.5 d to 3 d
M 8 x 1 to
0.75 d to 3 d
fine thread M 39 x 3* M 64 x 4