Stocked Threaded Inserts for Insert Molding, Heatstaking, and Ultrasonic Welding

Insert molding, heatstaking, and ultrasonic welding provide options to insert metal parts into your injection-molded part. We stock threaded inserts for these processes to support your unique design needs.

Insert molding adds a preformed part—often metal—during the injection molding process. Ultrasonic welding and heat staking are post-processing options to add inserts in thermoplastics to support different—and often times, more complex—geometries. Ultrasonic welding uses a high frequency vibration to generate heat and drive the insert into the part, while heat staking generates heat by using a conductive surface. Our applications engineering team can provide insight into the best solution for your project.

Click here to download the CAD files of our stocked inserts.


Stocked Threaded Inserts

INS # Thread Length
INS-PL0001 2-56 UNC 0.156 in.
INS-PL0002 4-40 UNC 0.205 in.
INS-PL0003 6-32 UNC 0.25 in.
INS-PL0004 8-32 UNC 0.25 in.
INS-PL0005 10-24 UNC 0.356 in.
INS-PL0006 1/4-20 UNC 0.344 in.
INS-PL0007 M3x5 5.21mm
INS-PL0008 M4x7 6.35mm
INS-PL0009 M5x8 7.13mm
INS # Thread Length
INS-PL0010 2-56 UNC 0.125 in.
INS-PL0011 4-40 UNC 0.187 in.
INS-PL0012 6-32 UNC 0.219 in.
INS-PL0013 8-32 UNC 0.312 in.
INS-PL0014 10-24 UNC 0.281 in.
INS-PL0015 1/4-20 UNC 0.5 in.
INS-PL0016 M3x5 4.77mm
INS-PL0017 M4x7 8.00mm
Inch Metric A B C D E F Min. Boss
Thread Size Part Number Thread Size Part Number ± 0.004 in. (long) ± 0.004 in. (short) ± 0.004 in. ± 0.004 in. 0.002 in. 0.002 in.  
2-56 256 x 115H M2.0 x 0.4 M20 x 115H   0.115 in. 0.123 in. 0.141 in.   0.129 in. 0.118 in. 0.246 in.
256 x 188H M20 x 188H 0.118 in.   0.112 in. 0.141 in. 0.123 in. 0.107 in. 0.246 in.
4-40 440 x 135H M2.5 x 0.45 M25 x 135H   0.135 in. 0.157 in. 0.172 in. 0.159 in. 0.153 in. 0.318 in.
440 x 219H M25 x 219H 0.219 in.   0.146 in. 0.172 in. 0.159 in. 0.141 in. 0.318 in.
6-32 632 x 150H M3.5 x 0.6 M35 x 150H   0.150 in. 0.203 in. 0.219 in. 0.206 in. 0.199 in. 0.412 in.
632 x 105H                
8-32 832 x 185H M4.0 x 0.7 M40 x 185H   0.185 in. 0.230 in. 0.250 in. 0.234 in. 0.226 in. 0.468 in.
832 x 312H M40 312H 0.3127 in.   0.213 in. 0.250 in. 0.234 in. 0.208 in.  0.468 in.

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