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Tap-Lok® Wood Series - Key Features:

Wood Series threaded inserts are designed specifically for use in wood for furniture, cabinets, plywood panels, and any components requiring quick on-site assembly or repeated assembly and disassembly.

  • Suitable for use in hard or soft woods.
  • Coarse pitch thread design reduces danger of splitting wood.
  • Superior pull-out and vibration resistance.
  • One-step, self-tapping installation.

Wide thread spacing provides stronger threads for greater pull-out resistance.

Coarse pitch external thread for maximum strength and installation in small wood sections with less danger of splitting.

Cutting slots are self-tapping and self-locking for quick, easy installation and excellent resistance to vibration.

This threaded insert is standard as a solid brass bushing.

High-quality internal threads are wear resistant. Unified and American Standard, class 2B, or ISO Metric standard, class 6H threads.

Photo: Wood Series


Performance Data*

Internal Thread Size
Pull-Out Resistance (lb)
Poplar
Oak
(in)
(metric)
Cross Grain
End Grain
Cross Grain
End Grain
6
3.5
260
125
330
260
8
4
300
240
500
400
10
5
500
450
850
625
1/4
6
850
725
1425
1250
5/16
8
1350
900
1950
1600
3/8
10
2000
1450
2700
2200

*Representative performance data for regular length. Preproduction prototype testing recommended for your application.


Pull-Out Resistance
Specifications table key:

Tap-Lok specifications diagram

Refer to the 'Specifications' table below for the measurements that correspond to this diagram.

Graph: Pull-Out Resistance


Specifications

Inch Sizes
Internal Threads
Part Number
D
External Diameter
L
Length
H
Recommended Hole Diameter
4-40
W-11240-30
0.219
0.344
0.172
6-32
W-13832-30
0.219
0.344
0.172
8-32
W-16432-30
0.250
0.406
0.203
10-24
W-19024-30
0.297
0.469
0.238
10-32
W-19032-30
0.297
0.469
0.238
1/4-20
W-25020-30
0.375
0.500
0.312
5/16-18
W31218-30
0.469
0.500
0.375
3/8-16
W-37516-30
0.563
0.938
0.468

Installation Recommendations

For most wood applications including medium-hard and hardwood, the threaded insert should be installed slot down. The cutting action at the slotted section allows easier installation and avoids radial stresses which may otherwise tend to split the wood.

Wood installation recommendation diagram

In soft wood, the threaded insert should be installed slot up. The threaded insert is then thread forming, similar to a wood screw. The absence of cutting provides a firm anchor in the relatively soft wood.


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