| Helicoil Tangless Insert |
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| Heli-Coil Tangless® Inserts eliminate
tang break-off and retrieval and are
easily adjusted or removed after
installation. |
- STRONGER ASSEMBLIES
Tapped threads are strengthened
because the inherent flexibility
of the insert provides a more
balanced distribution of static
and dynamic loads throughout
the engagement length.
- BI-DIRECTIONAL DESIGN
Installs quickly and easily from
either end.
- ELIMINATE STRESS
Virtually
no stress is induced into the
parent material as no staking,
swaging or keying in place is
required.
- POSITIVE SELF LOCKING TORQUE
Heli-Coil Tangless®
screw-lock inserts provide
a positive, self-locking
torque complying with the
requirements of NASM8846.
- MINIMIZE SPACE AND WEIGHT
Requires smaller
boss than solid inserts;
minimize total in-place cost.
- CONFIRM TO NAS1130
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| Selecting a Heli-coil Tangless Insert |
Heli-Coil Tangless® inserts are
made from 304 Stainless Steel per
AS7245 (see chart below for thread
size designation), and are available
in three lengths:
1,1-1/2 and diameters.
Tangless® inserts can be ordered
with a Cadmium Plate finish (Y),
Dry Film Lube finish (W), Primer Free
II finish (PF) or no finish (Blank).
Below is an example of how to order
Heli-Coil Tangles inserts. |
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Nominal
Thread
Size |
Type |
Size
Designation |
"A" |
"B"
Free Outer Dia. |
Number of Coils
Nominal Length |
Free
Running |
Screw-
Lock |
1 Dia. |
1 1/2 Dia. |
2 Dia. |
Min. |
Max. |
1 Dia. |
1 1/2 Dia. |
2 Dia. |
| Unified Coarse Thread(UNC) |
| 2(.086)-56 |
T1185 |
T3585 |
02C |
.086 |
.129 |
.172 |
.110 |
.119 |
3 |
5-1/4 |
7-3/8 |
| 4(.112)-40 |
T1185 |
T3585 |
04C |
.112 |
.168 |
.224 |
.144 |
.159 |
2-3/4 |
4-3/4 |
6-3/4 |
| 6(.138)-32 |
T1185 |
T3585 |
06C |
.138 |
.207 |
.276 |
.178 |
.193 |
2-3/4 |
4-3/4 |
6-7/8 |
| 8(.164)-32 |
T1185 |
T3585 |
2C |
.164 |
.246 |
.328 |
.205 |
.220 |
3-1/2 |
6 |
8-3/8 |
| 10(.190)-24 |
T1185 |
T3585 |
3C |
.190 |
.285 |
.380 |
.244 |
.259 |
2-7/8 |
5 |
7-1/8 |
| 1/4(.250)-20 |
T1185 |
T3585 |
4C |
.250 |
.375 |
.500 |
.310 |
.330 |
3-3/8 |
5-3/4 |
8 |
| Unified Fine Thread(UNF) |
| 10(.190)-32 |
T1191 |
T3591 |
3C |
.190 |
.285 |
.380 |
.236 |
.256 |
4-1/8 |
6-7/8 |
9-1/2 |
| 1/4(.250)-28 |
T1191 |
T3591 |
4C |
.250 |
.375 |
.500 |
.326 |
.306 |
5 |
8-1/4 |
11-3/8 |
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