CSX Series Long Imperial Crownserts
Long imperial locking Crownserts for applications requiring increased insert length and stronger thread engagement.
The CSX Series includes long imperial Crownserts for applications requiring increased insert length and stronger thread engagement in inch-size assemblies.
Use this series when a longer imperial locking insert is required for increased thread engagement. Each part number is matched with the correct CSTL hand-installation tool.

Long imperial locking inserts with UNJF / UNJEF thread options and matched CSTL hand-installation tooling.
Series Type
Long imperial Crownserts for increased thread engagement.
Threads
UNJF / UNJEF internal and external thread options.
Tooling
Matched CSTL hand-installation tools per insert size.
CSX Series Parts
Long imperial Crownserts with locking SP part numbers.
| Part number | Type | Internal thread | External thread | Diameter | Length | Hand tool | Link |
|---|---|---|---|---|---|---|---|
| CSXL1032SP | Locking | 10-32 UNJF-3B | 1/4-28 UNJF-3A | .2170 | .475 | CSTL1032 | View |
| CSXL428SP | Locking | 1/4-28 UNJF-3B | 5/16-24 UNJF-3A | .2785 | .595 | CSTL428 | View |
| CSXL524SP | Locking | 5/16-24 UNJF-3B | 3/8-24 UNJF-3A | .3405 | .720 | CSTL524 | View |
| CSXL624SP | Locking | 3/8-24 UNJF-3B | 7/16-20 UNJF-3A | .4010 | .875 | CSTL624 | View |
| CSXL720SP | Locking | 7/16-20 UNJF-3B | 1/2-20 UNJF-3A | .4630 | 1.000 | CSTL720 | View |
| CSXL820SP | Locking | 1/2-20 UNJF-3B | 9/16-24 UNJEF-3A | .5290 | 1.125 | CSTL820 | View |
Need Help with CSX Series Selection?
Send us your inch thread size and installation requirements, and we will help match the correct CSX Series insert and tooling.