HP8

HP8 POWERBOLT™ Fastening System

HUCK's original Grade 8 fastening system, the HP8® PowerBolt®, provides an easy-to-use system that delivers a permanent, vibration resistant clamp. These fasteners, available in diameters ranging from 1/2" to 3/4", offer fast, tamper-resistant installation, with only a visual inspection required.


Fastener Dimensions

1/2" Round Head (DT16)

Grip No. A B
C=.307 8 1.625 3.550
D=.107 12 1.875 3.800
G=.75 16 2.125 4.050
H=.812 20 2.375 4.300
I=.519 28 2.875 4.80
36 3.375 5.300
44 3.875 5.800
52 4.375 6.300
60 4.875 6.800

5/8" Round Head (DT20)

Grip No. A B
C=.498 8 1.820 4.038
D=1.330 12 2.070 4.288
G=.922 16 2.320 4.538
H=1.009 20 2.570 4.788
I=.645 28 3.070 5.288
36 3.570 5.788
44 4.070 6.288
52 4.570 6.788
60 5.070 7.288
88 6.820 9.038

3/4" Round Head (DT24)

Grip No. A B
C=.60 8 2.000 4.640
D=1.59 12 2.250 4.890
G=1.107 16 2.500 5.140
H=1.213 20 2.750 5.390
I=.780 28 3.250 5.890
32 3.500 6.140
36 3.750 6.390
44 4.250 6.890
52 4.750 7.390
60 5.250 7.890


Grip Data

Grip Number Range
min-max
8 .250-.750
12 .500-1.00
16 .750-1.25
20 1.00-1.50
28 1.50-2.00
32 1.75-2.25
36 2.00-2.50
44 2.50-3.00
52 3.00-3.50
60 3.50-4.00
88 5.25-5.75


Inspection Data

Round Head Inch Series (")

Diameter A (Min) B (Max) C (Min) D (Max)
DT16 .10 .65 .56 .760
DT20 .12 .67 .73 .945
DT24 .12 .67 .86 1.132


Installation Tooling

Dia. Installation Tool Nose Assembly Type Use
1/2 FE5901 99-5300 Hydraulic Production
5901 99-5300 Hydraulic Production
5/8 585 99-5301 Hydraulic Production
586 99-5301 Hydraulic Production
3/4 585 99-5303 Hydraulic Production
586 99-5303 Hydraulic Production


Installation Sequence

Step 1. The pin is inserted through a prepared hole and the collar is placed over the pintail.

Step 2. The nose assembly, attached to HUCK's installation tool, is placed over the pintail. The nose assembly pulls on the pintail, drawing the work pieces together.

Step 3. Continued pulling on the pintail moves the anvil forward swaging the collar into the locking grooves. The controlled swaging lengthens the collar to develop clamp.

Step 4. When the swaging is completed, the pintail separates from the pin, and the tool ejects the swaged collar out of the anvil, completing the installation.