Huckfit
HUCKFIT™ Fastening System
Designed for both OEM and aftermarket applications, the Huck-Fit® PowerBolt™ fastening system includes a pin and collar with fit-up thread. This feature allows the Huck-Fit® to be accurately positioned prior to fastening. Huck-Fit® fasteners are also removable, using an impact wrench.
| Diameter |
Dia No. |
A |
B max |
C max |
D min |
E max |
F ± .020 |
G max |
H max |
J min |
|
| 1/2 |
16 |
.485 - .500 |
.498 |
.750 |
.842 |
1.070 |
1.375 |
.627 |
.538 |
3.335 |
| 5/8 |
20 |
.610 - .625 |
.611 |
.937 |
1.058 |
1.330 |
1.570 |
.791 |
.673 |
3.788 |
| 3/4 |
24 |
.735 - .750 |
.711 |
1.125 |
1.264 |
1.585 |
1.750 |
.940 |
.808 |
4.390 |
| Diameter |
Dia No. |
A |
B max |
C max |
D min |
E max |
F ± .01 |
G max |
H max |
J min |
|
| 1/2 |
16 |
.485 - .500 |
.323 |
.875 |
.986 |
.015 |
1.375 |
.825 |
.538 |
3.335 |
| 5/8 |
20 |
.610 - .625 |
.403 |
1.062 |
1.202 |
.015 |
1.570 |
1.002 |
.673 |
3.788 |
| 3/4 |
24 |
.735 - .750 |
.483 |
1.250 |
1.408 |
.015 |
1.750 |
1.176 |
.808 |
4.390 |
| Diameter |
Dia No. |
K ± .015 |
L ± .003 |
M ± .003 |
N max |
O ref |
P ref |
Q ± .005 |
R ref |
S ± .015 |
T ± .015 |
|
| 1/2 |
16 |
.630 |
.522 |
.812 |
1.085 |
.125 |
.250 |
.914 |
1.061 |
.750 |
.875 |
| 5/8 |
20 |
.790 |
.648 |
1.009 |
1.358 |
.137 |
.285 |
1.098 |
1.274 |
.922 |
1.070 |
| 3/4 |
24 |
.925 |
.783 |
1.213 |
1.600 |
.187 |
.330 |
1.280 |
1.484 |
1.107 |
1.250 |
Grip Data
| Grip Number |
Range min |
max |
|
| 4 |
.25 |
.50 |
| 8 |
.25 |
.75 |
| 12 |
.50 |
1.00 |
| 16 |
.75 |
1.25 |
| 20 |
1.00 |
1.50 |
| 28 |
1.50 |
2.00 |
| 36 |
2.00 |
2.50 |
| 44 |
2.50 |
3.00 |
| 52 |
3.00 |
3.50 |
| 60 |
3.50 |
4.00 |
| 68 |
4.00 |
4.50 |
| 76 |
4.50 |
5.00 |
| 84 |
5.00 |
5.50 |
| 92 |
5.50 |
6.00 |
| 100 |
6.00 |
6.50 |
| 108 |
6.50 |
7.00 |
Hole Data
| Diameter |
Recommended
Hole Diameter |
|
| 1/2 |
.500 - .562 |
| 5/8 |
.625 - .687 |
| 3/4 |
.750 - .812 |
For hole diameters smaller than H dimension
(see drawings) the hole may have to be chamfered
for proper head seating.
Minimum Installed Values for Grade 8 (A490)
| Diameter |
Shear |
Tensile |
Clamp |
|
| 1/2 |
17350 |
21300 |
16000 |
| 5/8 |
27450 |
33900 |
25500 |
| 3/4 |
39850 |
50100 |
37600 |
Minimum values, in pounds, of installed fasteners.
Installation Tooling
| Dia. |
Installation Tool |
Nose Assembly |
Type |
Use |
|
| 1/2 |
5901 |
99-5404 |
Hydraulic |
Production |
| 5/8 |
507 |
99-5414 |
Hydraulic |
Production |
| 3/4 |
585 |
99-5303 |
Hydraulic |
Production |
| |
586 |
99-5303 |
Hydraulic |
Production |
Inspection Data
Should 'A' or 'B' or 'E' dimensions exceed the given values, the fastener is out-of-grip. A 'C' dimension less than the given value indicates an incomplete
swage. A 'D' dimension greater than the given values indicates an incorrect or worn anvil on the installation tool.
| Dia. |
A max |
B max |
C min |
D max |
E max |
|
| 1/2 |
.03 |
.53 |
.56 |
.760 |
.65 |
| 5/8 |
.03 |
.53 |
.73 |
.945 |
.67 |
| 3/4 |
.03 |
.53 |
.86 |
1.132 |
.67 |
A properly installed fastener will possess the dimensions given here. Visual inspection is sufficient.
