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Threaded Inserts > Specifications > Tap-Lok® Coarse Series
Tap-Lok® Coarse Series - Key Features:
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Coarse external-thread series, brass inserts are designed specifically for use in plastics.
- Highest pull-out resistance for plastics.
- Coarse external threads avoid stress cracking in base material.
- Self-tapping and self-locking.
- Suitable for thermosetplastics and thermoplastics.
- Superior vibration resistance.
- One-step installation.
The widely spaced threads reduce installation torque and provide strong threads for superior pull-out resistance even in brittle plastics.
Cutting slots are self-tapping and self-locking for quick, easy installation and excellent resistance to vibration.
High-quality internal threads are wear resistant. Unified and American Standard, class 2B, or ISO Metric standard, class 6H threads.
This threaded insert is standard as a solid brass bushing. For plastics containing highly abrasive fillers, we recommend regular slotted case-hardened steel inserts.
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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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ABS
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Nylon
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Phenolic
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Polyester
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(in)
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(metric)
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(in)2
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(7,500 PSI Shear)
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(12,000 PSI Shear)
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(9,500 PSI Shear)
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(10,400 PSI Shear)
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2
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2
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0.030
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140
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360
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290
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310
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4
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3
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0.050
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240
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600
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480
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520
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6
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3.5
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0.080
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380
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960
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760
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830
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8
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4
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0.110
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530
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1320
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1050
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1140
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10
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5
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0.150
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1130
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1800
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1430
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1560
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1/4
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6
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0.250
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1880
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3000
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2380
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2600
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*Representative performance data for regular length. Preproduction prototype testing recommended for your application.
Pull-Out Resistance
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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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Specifications
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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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Diameter
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Length
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Recommended Hole Diameter
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Counterbore Depth
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2-56
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C08656-30
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M2 x 0.4
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C02040-30
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0.141
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0.187
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0.126
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0.030
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4-40
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C11240-30
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M3 x 0.5
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C03050-30
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0.171
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0.234
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0.150
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0.040
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6-32
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C13832-30
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M3.5 x 0.6
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C03560-30
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0.218
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0.281
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0.192
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0.050
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8-32
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C16432-30
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M4 x 0.7
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C04070-30
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0.250
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0.328
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0.224
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0.050
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10-32
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C19032-30
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M5 x 0.8
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C05080-30
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0.296
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0.375
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0.251
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0.055
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1/4-20
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C25020-30
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M6 x 1.0
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C06010-30
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0.375
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0.484
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0.333
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0.060
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