CSL518SP

Imperial Structural Locking Crownserts

CSL Series / Locking Type / SP / Structural

Installed using the Crownserts Hand-Installation Tool:  CSTL518

CSL518SP is an imperial structural locking crownsert in silver-plated 17-4PH stainless steel, designed to strengthen 5/16-18 UNC threads in lightweight parent materials. It uses 3/8-24 UNF external threads and CSTL518 installation tooling.

Crownserts can offer you the part CSL518SP with Certificate of Quality, Certificate of Conformity and Certificate of Origin on request.

CSL518SP - Imperial Structural Locking Crownserts
CSL518SP - Imperial Structural Locking Crownserts
CSL518SP - Imperial Structural Locking Crownserts
CSL518SP - Imperial Structural Locking Crownserts
 How to install a Crownsert?
CSL518SP - Imperial Structural Locking Crownserts
CSL518SP - Imperial Structural Locking Crownserts
CSL518SP - Imperial Structural Locking Crownserts

Thread & Dimensions

A internal thread (Class 3B) 5/16-18 UNC
B external thread (Class 3A) 3/8-24 UNF
Ø max minor special .3405
Ø C (+.008/-.002) .314
D (+.015/-.000) .110
E .266
G (±.010) .470
J (±1) 29
Through-hole preparation Min. full THD depth .693; Min. full depth .505
Blind-hole preparation Min. full THD depth .693; Min. full depth .505
CSL518SP schematic

Material & Finish

Material 17-4PH, Cond H1025 per AMS 5643
Finish PASSIVATED per AMS 2700 & Silver Plated per AMS 2411 (.0002 min. thickness)
Temperature range -110°/+900°F
Heat treat RC 35-42
Magnetic YES

Tooling & Preparation

Hand-installation tool part number CSTL518
Step drill part number CSD0343
Tap through tool part number TTI0375
Blind tap tool part number TBI0375
Removal tool part number CSRT518
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Crownserts is offering part CSL518SP as factory new.