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Tapered Heat-Set Inserts for Plastic
The tapered shape makes it easier to guide these inserts into a hole during installation. Use a drill bit to create a straight hole, then taper the top half. Heat inserts with a soldering tip so that they melt the plastic when installed. As the plastic cools, it solidifies around the knurls and ridges on the insert for excellent resistance to both torque and pull-out.
Made with lead, brass inserts are stronger than aluminum and other brass alloys but not as strong as 18-8 stainless steel inserts. They have good corrosion resistance.
Inserts that meet ASTM standards comply with specifications for material quality.
For technical drawings and 3-D models, click on a part number.
Inch
Inserts | Soldering Installation Tips | Extraction Tips | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size  | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | For Hole Taper Angle | Specifications Met | Pkg. Qty. | Pkg. | Each | Each | |||
Brass | ||||||||||||
| 0-80 | 0.115" | 3 mm | 3mm | 8° | ASTM B16 | 100 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 0-80 | 0.188" | No. 36 | 0.107" | 8° | ASTM B16 | 50 | 000000000 | 00000 | 000000000 | 00000 | 000000 | 00 |
| 2-56 | 0.115" | 3 mm | 3mm | 8° | ASTM B16 | 100 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 |
| 2-56 | 0.188" | No. 36 | 0.107" | 8° | ASTM B16 | 100 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 4-40 | 0.135" | No. 24 | 0.153" | 8° | ASTM B16 | 100 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 4-40 | 0.219" | 9/64" | 0.141" | 8° | ASTM B16 | 100 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 4-40 | 0.285" | 9/64" | 0.1406" | 8° | ASTM B16 | 25 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 5-40 | 0.15" | No. 8 | 0.199" | 8° | ASTM B16 | 25 | 000000000 | 00000 | 000000 | 00 | 000000 | 00 |
| 5-40 | 0.25" | No. 13 | 0.185" | 8° | ASTM B16 | 25 | 000000000 | 00000 | 000000 | 00 | 000000 | 00 |
| 6-32 | 0.15" | No. 8 | 0.199" | 8° | ASTM B16 | 100 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 6-32 | 0.25" | No. 13 | 0.185" | 8° | ASTM B16 | 100 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 8-32 | 0.185" | No. 2 | 0.226" | 8° | ASTM B16 | 100 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 8-32 | 0.312" | No. 5 | 0.208" | 8° | ASTM B16 | 50 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 8-32 | 0.375" | No. 5 | 0.208" | 8° | ASTM B16 | 25 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 10-24 | 0.15" | H | 0.267" | 8° | ASTM B16 | 50 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 10-24 | 0.225" | H | 0.267" | 8° | ASTM B16 | 50 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 10-24 | 0.375" | D | 0.246" | 8° | ASTM B16 | 50 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 10-32 | 0.15" | H | 0.267" | 8° | ASTM B16 | 25 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 10-32 | 0.225" | H | 0.267" | 8° | ASTM B16 | 50 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 10-32 | 0.375" | D | 0.246" | 8° | ASTM B16 | 50 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 1/4"-20 | 0.3" | S | 0.349" | 8° | ASTM B16 | 25 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 1/4"-20 | 0.5" | O | 0.321" | 8° | ASTM B16 | 25 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 1/4"-28 | 0.3" | S | 0.349" | 8° | ASTM B16 | 25 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 1/4"-28 | 0.5" | O | 0.321" | 8° | ASTM B16 | 25 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 5/16"-18 | 0.335" | 27/64" | 0.431" | 8° | ASTM B16 | 25 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 5/16"-18 | 0.562" | X | 0.401" | 8° | ASTM B16 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| 5/16"-24 | 0.335" | 27/64" | 0.431" | 8° | ASTM B16 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 5/16"-24 | 0.562" | X | 0.401" | 8° | ASTM B16 | 25 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 3/8"-16 | 0.375" | 33/64" | 0.523" | 8° | ASTM B16 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 3/8"-16 | 0.625" | 31/64" | 0.488" | 8° | ASTM B16 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 3/8"-24 | 0.375" | 33/64" | 0.523" | 8° | ASTM B16 | 25 | 000000000 | 00000 | 000000000 | 00000 | 000000 | 00 |
| 3/8"-24 | 0.625" | 31/64" | 0.488" | 8° | ASTM B16 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000 | 00 |
| Soldering Iron, 60W | 00000000 | Each | 000000 |
Metric
Inserts | Soldering Installation Tips | Extraction Tips | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Installed Lg., mm | Drill Bit Size | For Max. Hole Dia. | For Hole Taper Angle | Specifications Met | Pkg. Qty. | Pkg. | Each | Each | |||
Brass | |||||||||||||
| M1.6 | 0.35 | 2.92 | 3 mm | 3mm | 8° | ASTM B16 | 50 | 000000000 | 000000 | 000000 | 00 | 000000 | 00 |
| M2 | 0.4 | 2.9 | 3 mm | 3mm | 8° | ASTM B16 | 100 | 000000000 | 00000 | 000000000 | 000000 | 000000 | 00 |
| M2 | 0.4 | 4.8 | 2.7 mm | 2.7mm | 8° | ASTM B16 | 100 | 000000000 | 00000 | 000000000 | 00000 | 000000 | 00 |
| M2.2 | 0.45 | 2.92 | 3 mm | 3mm | 8° | ASTM B16 | 25 | 000000000 | 0000 | 000000 | 00 | 000000 | 00 |
| M2.2 | 0.45 | 4.78 | 2.7 mm | 2.7mm | 8° | ASTM B16 | 25 | 000000000 | 00000 | 000000 | 00 | 000000 | 00 |
| M2.5 | 0.45 | 3.4 | No. 24 | 0.152" | 8° | ASTM B16 | 100 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 |
| M2.5 | 0.45 | 5.6 | 9/64" | 0.1406" | 8° | ASTM B16 | 100 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| M3 | 0.5 | 3.8 | No. 8 | 0.199" | 8° | ASTM B16 | 100 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| M3 | 0.5 | 6.4 | No. 13 | 0.185" | 8° | ASTM B16 | 100 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| M3.5 | 0.6 | 3.81 | No. 8 | 0.199" | 8° | ASTM B16 | 50 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| M3.5 | 0.6 | 6.35 | No. 13 | 0.185" | 8° | ASTM B16 | 50 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| M4 | 0.7 | 4.7 | No. 2 | 0.226" | 8° | ASTM B16 | 100 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| M4 | 0.7 | 7.9 | No. 8 | 0.208" | 8° | ASTM B16 | 50 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| M5 | 0.8 | 6.7 | N | 0.303" | 8° | ASTM B16 | 50 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| M5 | 0.8 | 11.1 | J | 0.278" | 8° | ASTM B16 | 25 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| M6 | 1 | 7.6 | S | 0.349" | 8° | ASTM B16 | 25 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| M6 | 1 | 12.7 | O | 0.321" | 8° | ASTM B16 | 25 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| M8 | 1.25 | 8.51 | 11 mm | 11mm | 8° | ASTM B16 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| M8 | 1.25 | 14.3 | X | 0.401" | 8° | ASTM B16 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| M10 | 1.5 | 15.88 | 31/64" | 0.488" | 8° | ASTM B16 | 25 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| Soldering Iron, 60W | 00000000 | Each | 000000 |