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Threaded Inserts > Specifications > Tap-Lok® Hole Series
Tap-Lok® Hole Series - Key Features:
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Hole Series threaded inserts are designed for use in tough-to-tap, high-strength materials as well as softer metals and plastics.
- Highest pull-out resistance.
- Suitable for harder materials.
- Superior vibration resistance.
- One-step installation.
- Available certified to military standards.
Superior pull-out resistance in softer metals and plastics from the external v-form thread.
Circular cutting elements self-tap and lock into the base material. They are able to resist extreme vibration with no loss in performance.
High-quality internal threads are wear resistant, Unified and American Standard, class 2B, or ISO Metric standard, class 6H threads. Military versions conform to Unified and American Standard, class 3B.
This threaded insert is a solid metal bushing that is available in stainless steel, steel with zinc plating, or steel with cadmium plating in regular, medium or short length.
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Performance Data*
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Internal Thread Size
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Effective Shear Area
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Pull-Out Resistance (lb)
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Tensile Strength (lb) of 160,000 PSI Heat-Treated Cap Screw
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Phenolic
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380 Die Cast Aluminum
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2024 T4 Wrought Aluminum
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(in)
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(metric)
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(in)2
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(9,500 PSI Shear)
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(26,000 PSI Shear)
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(40,000 PSI Shear)
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(in)
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(metric)
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2
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2
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0.040
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380
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1040
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1600
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-
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510
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4
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3
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0.060
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570
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1560
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2400
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910
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1250
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6
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3.5
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0.090
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860
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2340
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3600
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1370
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1680
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8
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4
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0.130
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1290
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3380
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5200
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2120
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2180
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10
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5
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0.170
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1620
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4420
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6800
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2825
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3520
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1/4
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6
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0.270
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2570
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7020
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10800
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4800
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4980
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5/16
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8
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0.410
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3900
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10660
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16400
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7900
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9080
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3/8
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10
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0.610
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5700
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15860
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24400
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11700
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14320
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7/16
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-
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0.780
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7410
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20280
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31200
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16050
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-
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1/2
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12
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1.040
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9880
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27040
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41600
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21550
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20910
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9/16
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14
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1.230
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11590
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31720
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48800
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27200
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28520
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5/8
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16
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1.610
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15300
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41860
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64400
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34200
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38940
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3/4
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18
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2.360
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22420
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61360
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94400
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50500
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-
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*Representative performance data for regular length. Preproduction prototype testing recommended for your application.
Pull-Out Resistance or Tensile Strength
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Specifications table key:
Refer to the 'Specifications' table below for the measurements that correspond to this diagram.
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Inch Sizes
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Metric Sizes
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D
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L
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H
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C
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Internal Threads
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Basic Part Number
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Internal Threads
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Basic Part Number
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External Diameter
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Regular (prefix H)
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Medium (prefix HM)
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Short (prefix HS)
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Recommended Hole Diameter
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Counterbore Diameter Depth
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2-56
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08656
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M2 x 0.4
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02040
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0.141
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0.188
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0.156
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0.125
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0.127
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0.030
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4-40
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11240
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M3 x 0.5
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03050
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0.172
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0.234
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0.187
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0.156
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0.159
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0.030
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6-32
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13832
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M3.5 x 0.6
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03560
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0.219
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0.281
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0.218
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0.187
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0.204
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0.030
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8-32
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16432
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M4 x 0.7
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04070
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0.250
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0.328
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0.250
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0.218
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0.235
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0.030
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10-24
10-32
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19024
19032
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M5 x 0.8
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05080
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0.297
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0.375
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0.296
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0.250
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0.278
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0.040
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1/4-20
1/4-28
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25020
25028
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M6 x 1.0
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06010
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0.375
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0.484
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0.375
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0.312
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0.352
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0.050
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5/16-18
5/16-24
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31218
31224
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M8 x 1.25
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08012
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0.469
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0.562
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0.469
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0.375
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0.443
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0.055
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3/8-16
3/8-24
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37516
37524
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M10 x 1.5
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10015
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0.563
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0.687
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0.562
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0.437
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0.533
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0.060
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7/16-14
7/16-20
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43714
43720
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-
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-
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0.640
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0.781
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0.656
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0.500
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0.608
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0.070
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1/2-13
1/2-20
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50013
50020
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M12 x 1.75
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12017
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0.734
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0.906
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0.750
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0.562
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0.697
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0.075
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9/16-12
9/16-18
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56212
56218
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M14 x 2.0
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14020
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0.813
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1.000
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0.844
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0.625
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0.772
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0.080
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5/8-11
5/8-18
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62511
62518
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M16 x 2.0
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16020
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0.906
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1.125
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0.937
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0.687
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0.862
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0.090
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3/4-10
3/4-16
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75010
75016
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M18 x 2.0
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18020
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1.078
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1.375
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1.125
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0.812
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1.029
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0.100
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Part Number Specifications = Length Prefix + Basic Part Number + Material Suffix
Example:
10-32 Medium-length, steel Hole Series threaded insert with zinc plating:
HM-19032-14
M3 x 0.5 Short-length, stainless steel Hole Series threaded insert
HS-03050-50
Military Specifications: Military version conforms to MS35914.
Contact Customer Service for ordering information.
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Length Prefix
H = Regular
HM = Medium
HS = Short
Material Suffix
12 = Case-hardened, cadmium-plated steel
14 = Case-hardened, zinc-plated steel
50 = Stainless Steel
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