Categories

Hi-Shear Inst. & Removal l Gages l Pin Protrusion Gages

Inspection of Pins for Correct Grip Length    

Inspection of Pins for Correct Grip Length

To determine if the pin is the correct grip length, the amount of pin thread protrusion must fall between prescribed maximum and minimum limits. Checking pin protrusion can be done with the appropiate Pin Protrusion Gage Set. There are separate gage sets for both the Hi-Lok and Hi-Lite fastening systems, and for both the inch and metric measurement systems. The principle of the protrusion gage checking is shown in the diagram below. Checking pin protrusion limits can be done before or after collar installation. Checking must be done with the bottom part of the gage resting flat on the work surface, or on top of a washer surface if a washer is used. Any protrusion between the minimum and maximum limits is satisfactory.

Gage Set Description
Part No.
Hi-Lite (Inches) Includes gages for: 5/32”, 3/16”, 1/4”, 5/16” & 3/8” pin diameters
2-1522HST (Red Letters)
Hi-Lite (Inches) Includes gages for: 7/16”, 1/2”, 9/16” & 5/8” pin diameters
2-1522HST-2 (Red Letters)
Hi-Lite (Metrics) Includes gages for: 4, 5, 6, 8, 10 & 12 mm  pin diameters
2-1522HSTM (Green Letters)
Hi-Lok/Hi-Tigue (Inches) Includes gages for: 5/32”, 3/16”, 1/4”, 5/16” & 3/8” pin diameters
2-1522 (Black Letters)
Hi-Lok/Hi-Tigue (Inches) Includes gages for: 7/16”, 1/2”, 9/16” & 5/8” pin diameters
2-1522-2 (Black Letters)
Hi-Lok/Hi-Tigue (Metric) Includes gages for: 4, 5, 6, 8, 10 & 12 mm  pin diameters
2-1522HLM (Purple Letters)
     
Pin Protrusion Gaging
Gages In Use
Recommended Pin Protrusion Limits for
Hi-Lite Fasteners (Inches)
Recommended Pin Protrusion Limits for
Hi-Lok Fasteners ( Inches)
First Dash No.
Nominal Diameter
Pin Protrusion
Minimum
Maximum
0.05
5/32”
0.27
0.352
0.06
3/16”
0.28
0.362
0.08
1/4”
0.31
0.392
0.1
5/16”
0.37
0.452
0.12
3/8”
0.41
0.492
0.14
7/16”
0.475
0.557
0.16
1/2”
0.515
0.597
0.18
9/16”
0.59
0.672
0.2
5/8”
0.65
0.732
First Dash No.
Nominal Diameter
Pin Protrusion
Minimum
Maximum
0.05
5/32”
0.27
0.352
0.06
3/16”
0.28
0.362
0.08
1/4”
0.31
0.392
0.1
5/16”
0.37
0.452
0.12
3/8”
0.41
0.492
0.14
7/16”
0.475
0.557
0.16
1/2”
0.515
0.597
0.18
9/16”
0.59
0.672
0.2
5/8”
0.65
0.732
0.24
3/4”
1.04
1.122
0.28
7/8”
1.2
1.282
0.32
1”
1.38
1.462
Recommended Pin Protrusion Limits for
Hi-Lite Fasteners (Metric)
Recommended Pin Protrusion Limits for
Hi-Lok Fasteners (Metric)
First Dash No.
Nominal Diameter
Pin Protrusion
Minimum
Maximum
-4
4 mm
8.10 mm
9.60 mm
-5
5 mm
8.40 mm
9.90 mm
-6
6 mm
10.45 mm
11.95 mm
-8
8 mm
12.70 mm
14.20 mm
-10
10 mm
14.95 mm
16.45 mm
-12
12 mm
17.90 mm
19.40 mm
First Dash No.
Nominal Diameter
Pin Protrusion
Minimum
Maximum
-4
4 mm
6.86 mm
8.36 mm
-5
5 mm
7.40 mm
8.90 mm
-6
6 mm
8.40 mm
9.90 mm
-8
8 mm
9.40 mm
10.90 mm
-10
10 mm
11.57 mm
13.07 mm
-12
12 mm
13.08 mm
14.58 mm