P & HP Series: Press-In Threaded Inserts for Hard Plastics

P & HP Series Press-In Threaded InsertsP & HP Series press-in threaded inserts for plastics provide adequate holding strengths without the use of ultrasonic or heat equipment. These straight-hole threaded inserts are most commonly used in thermoset or other hard plastics. The pilot end provides for fast alignment. The insert is placed in a hole, pressure is applied and the three bands of helical knurls dig down deep and lock the insert in place, providing excellent torque-out resistance.

Recommended Hole Size – See chart below for installation hole size. Additional information can be found in our Design Guidelines.

Printable Catalog Page
Press-In Threaded Insert Line Diagram
P SERIES PRESS-IN THREADED INSERTS
INCH METRIC A
±.004		 L
±.004		 Hole H
+.003 -.000		 Min.
Boss
Thread
Size		 Part
Number		 Thread
Size		 Part
Number
2-56 256X157P M2.0 x 0.4 M20X157P† .134 .157 .121 .242
4-40 440X208P M3.0 x 0.5 M30X208P .165 .208 .150 .300
6-32 632X247P M3.5 x 0.6 M35X247P† .197 .247 .182 .364
8-32 832X292P M4.0 x 0.7 M40X292P .228 .292 .213 .426
10-24 1024X328P M5.0 x 0.8 M50X328P† .259 .328 .244 .488
10-32 1032X328P .259 .328 .244 .488
1/4-20 2520X364P M6.0 x 1.0 M60X364P .322 .364 .307 .614
1/4-28 2528X364P .322 .364 .307 .614
5/16-18 3118X364P† M8.0 x 1.25 M80X364P† .383 .364 .368 .736
5/16-24 3124X364P† .383 .364 .368 .736

† Non-Stocking Item – Minimum Order May Apply

Press-In Tapered Threaded Insert Line Diagram
HP SERIES PRESS-IN THREADED INSERTS
INCH METRIC A
±.004		 B
±.004		 L
±.004		 Hole H
+.003 -.000		 Min.
Boss
Thread
Size		 Part
Number		 Thread
Size		 Part
Number
2-56 H256X157P M2.0 x 0.4 HM20X157P† .189 .024 .157 .121 .242
4-40 H440X208P M3.0 x 0.5 HM30X208P .220 .024 .208 .150 .300
6-32 H632X247P M3.5 x 0.6 HM35X247P .250 .029 .247 .182 .364
8-32 H832X292P M4.0 x 0.7 HM40X292P .283 .032 .292 .213 .426
10-24 H1024X207P† M5.0 x 0.8 HM50X207P† .313 .043 .207 .244 .488
H1024X328P HM50X328P .313 .040 .328 .244 .488
10-32 H1032X207P .313 .043 .207 .244 .488
H1032X328P .313 .040 .328 .244 .488
1/4-20 H2520X364P M6.0 x 1.0 HM60X364P .374 .050 .364 .307 .614
1/4-28 H2528X364P .374 .050 .364 .307 .614
5/16-18 H3118X364P M8.0 x 1.25 HM80X364P† .433 .050 .364 .368 .736
5/16-24 H3124X364P† .433 .050 .364 .368 .736

† Non-Stocking Item – Minimum Order May Apply