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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.
18-8 stainless steel inserts are stronger than brass and aluminum inserts, have excellent corrosion resistance, and are lead-free. Since they’re lead-free, they can be safely recycled.
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 | |||
18-8 Stainless Steel | ||||||||||||
| 2-56 | 0.115" | 3 mm | 3mm | 8° | ASTM A380 | 10 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 2-56 | 0.188" | No. 36 | 0.107" | 8° | ASTM A380 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| 4-40 | 0.135" | No. 24 | 0.152" | 8° | ASTM A380 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| 4-40 | 0.219" | 9/64" | 0.1406" | 8° | ASTM A380 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| 6-32 | 0.15" | No. 8 | 0.199" | 8° | ASTM A380 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| 6-32 | 0.25" | No. 13 | 0.185" | 8° | ASTM A380 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| 8-32 | 0.185" | No. 2 | 0.221" | 8° | ASTM A380 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| 8-32 | 0.312" | No. 5 | 0.208" | 8° | ASTM A380 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| 10-24 | 0.225" | H | 0.266" | 8° | ASTM A380 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 10-32 | 0.225" | H | 0.266" | 8° | ASTM A380 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 10-32 | 0.375" | D | 0.246" | 8° | ASTM A380 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 1/4"-20 | 0.3" | S | 0.348" | 8° | ASTM A380 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| 1/4"-20 | 0.5" | O | 0.316" | 8° | ASTM A380 | 5 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 1/4"-28 | 0.5" | O | 0.316" | 8° | ASTM A380 | 5 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| 5/16"-18 | 0.335" | 27/64" | 0.4219" | 8° | ASTM A380 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| 5/16"-18 | 0.562" | X | 0.397" | 8° | ASTM A380 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| 3/8"-16 | 0.625" | 31/64" | 0.4844" | 8° | ASTM A380 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| 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 | |||
18-8 Stainless Steel | |||||||||||||
| M2 | 0.4 | 2.92 | 3 mm | 3mm | 8° | ASTM A380 | 10 | 000000000 | 00000 | 000000000 | 000000 | 000000 | 00 |
| M2.5 | 0.45 | 3.43 | No. 24 | 0.153" | 8° | ASTM A380 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 000000 |
| M2.5 | 0.45 | 5.56 | 9/64" | 0.1406" | 8° | ASTM A380 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| M3 | 0.5 | 3.43 | No. 24 | 0.152" | 8° | ASTM A380 | 25 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| M3 | 0.5 | 3.81 | No. 8 | 0.217" | 8° | ASTM A380 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| M3 | 0.5 | 5.56 | 9/64" | 0.1406" | 8° | ASTM A380 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| M3 | 0.5 | 6.35 | No. 13 | 0.185" | 8° | ASTM A380 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| M3.5 | 0.6 | 6.35 | No. 13 | 0.185" | 8° | ASTM A380 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| M4 | 0.7 | 4.7 | No. 2 | 0.226" | 8° | ASTM A380 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| M4 | 0.7 | 7.92 | No. 5 | 0.208" | 8° | ASTM A380 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| M5 | 0.8 | 5.72 | H | 0.267" | 8° | ASTM A380 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| M5 | 0.8 | 6.71 | N | 0.303" | 8° | ASTM A380 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| M5 | 0.8 | 9.53 | D | 0.246" | 8° | ASTM A380 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
| M5 | 0.8 | 11.1 | J | 0.278" | 8° | ASTM A380 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| M6 | 1 | 7.62 | S | 0.349" | 8° | ASTM A380 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| M6 | 1 | 12.7 | O | 0.321" | 8° | ASTM A380 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| M8 | 1.25 | 8.51 | 27/64" | 0.431" | 8° | ASTM A380 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| M8 | 1.25 | 14.27 | X | 0.401" | 8° | ASTM A380 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| Soldering Iron, 60W | 00000000 | Each | 000000 |