C Series: Chevron Threaded Inserts for Plastics and Brittle Materials

Chevron Threaded InsertSome thermoplastics, like polycarbonates and structural foams, are brittle – especially in thin-wall applications. Designed for straight holes using ultrasonic or thermal processes, our chevron threaded inserts for plastic add considerable strength. They are our most popular brass inserts, offering the most overall length choices.

Our chevron inserts feature two opposing bands of sharp diagonal knurls, providing high tensile pull-out load carrying capability. Little or no stress is applied to the walls of the molded holes. A lead-in pilot diameter assures true perpendicular alignment.

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

Printable Catalog Page
Chevron Insert Diagram
CHEVRON THREADED INSERTS
INCH METRIC A
±.004		 B
±.004		 C
±.004		 Hole H
+.003
-.000		 Min.
Boss
Thread
Size		 Part
Number		 Thread
Size		 Part
Number
0-80 080X125C† .116 .125 .095 .100 .200
2-56 256X100C M2.0 x 0.4 M20X100C .143 .100 .123 .126 .252
256X125C M2.0 x 0.4 M20X125C† .143 .125 .123 .126 .252
256X157C M2.0 x 0.4 M20X157C .143 .157 .123 .126 .252
4-40 440X135C M2.5 x 0.45 M25X135C .186 .135 .154 .157 .314
M3.0 x 0.5 M30X118C† .186 .118 .154 .157 .314
M3.0 x 0.5 M30X135C .186 .135 .154 .157 .314
440X157C M2.5 x 0.45 M25X157C .186 .157 .154 .157 .314
M3.0 x 0.5 M30X157C .186 .157 .154 .157 .314
440X170C M2.5 x 0.45 M25X170C .186 .170 .154 .157 .314
M3.0 x 0.5 M30X170C .186 .170 .154 .157 .314
M3.0 x 0.5 M30X197C† .186 .197 .154 .157 .314
440X226C M2.5 x 0.45 M25X226C .186 .226 .154 .157 .314
M3.0 x 0.5 M30X226C .186 .226 .154 .157 .314
6-32 632X125C .218 .125 .185 .188 .376
632X150C M3.0 x 0.5 M30X150C .218 .150 .185 .188 .376
M3.5 x 0.6 M35X150C .218 .150 .185 .188 .376
632X226C .218 .226 .185 .188 .376
632X250C M3.0 x 0.5 M30X250C .218 .250 .185 .188 .376
M3.5 x 0.6 M35X250C .218 .250 .185 .188 .376
632X281C M3.5 x 0.6 M35X281C .218 .281 .185 .188 .376
8-32 832X185C M4.0 x 0.7 M40X185C .249 .185 .218 .221 .442
832X250C M40X250C .249 .250 .218 .221 .442
832X321C M40X321C .249 .321 .218 .221 .442
10-24 1024X185C† M5.0 x 0.8 M50X185C† .280 .185 .249 .252 .504
1024X225C M50X225C† .280 .225 .249 .252 .504
1024X250C M50X250C .280 .250 .249 .252 .504
1024X310C M50X310C† .280 .310 .249 .252 .504
1024X375C M50X375C .280 .375 .249 .252 .504
10-32 1032X185C† .280 .185 .249 .252 .504
1032X225C .280 .225 .249 .252 .504
1032X250C .280 .250 .249 .252 .504
1032X310C .280 .310 .249 .252 .504
1032X375C .280 .375 .249 .252 .504
1/4-20 2520X226C M6.0 x 1.0 M60X226C† .342 .226 .312 .315 .630
2520X250C M60X250C .342 .250 .312 .315 .630
2520X312C M60X312C .342 .312 .312 .315 .630
2520X375C M60X375C .342 .375 .312 .315 .630
2520X500C M60X500C .342 .500 .312 .315 .630
1/4-28 2528X226C .342 .226 .312 .315 .630
2528X250C† .342 .250 .312 .315 .630
2528X312C† .342 .312 .312 .315 .630
2528X375C† .342 .375 .312 .315 .630
2528X500C .342 .500 .312 .315 .630
5/16-18 3118X250C† M8.0 x 1.25 M80X250C† .406 .250 .374 .377 .754
3118X500C M80X500C .406 .500 .374 .377 .754
5/16-24 3124X250C .406 .250 .374 .377 .754
3124X500C .406 .500 .374 .377 .754
3/8-16 3816X500C M10.0 x 1.5 M100X500C .498 .500 .465 .468 .936
3/8-24 3824X500C .498 .500 .465 .468 .936
1/2-13 5013X625C† .659 .625 .623 .627 1.254
1/2-20 5020X625C†
1/8-NPT 1227X375C† .480 .375 .450 .453 .906
1227X625C† .480 .625 .450 .453 .906

† Non-Stocking Item – Minimum Order May Apply
Stainless Steel Chevron Inserts – Class 3A/4H screw must pass with finger torque, standard class go gage may stop on last thread.
Part numbers for Threaded Stainless Steel Chevron Inserts are the same as listed in the chart, but ending with -SS.