CSL720SP

Imperial Structural Locking Crownserts

CSL Series / Locking Type / SP / Structural

Installed using the Crownserts Hand-Installation Tool:  CSTL720

CSL720SP reinforces or repairs 7/16-20 UNF imperial threads in aluminium, magnesium or other non-ferrous materials. silver-plated 17-4PH stainless steel, with .468 15/32 tap-hole guidance and CSTL720 hand installation tooling.

Crownserts can offer you the part CSL720SP with Certificate of Quality, Certificate of Conformity and Certificate of Origin on request.

CSL720SP - Imperial Structural Locking Crownserts
CSL720SP - Imperial Structural Locking Crownserts
CSL720SP - Imperial Structural Locking Crownserts
CSL720SP - Imperial Structural Locking Crownserts
 How to install a Crownsert?
CSL720SP - Imperial Structural Locking Crownserts
CSL720SP - Imperial Structural Locking Crownserts
CSL720SP - Imperial Structural Locking Crownserts

Thread & Dimensions

A internal thread (Class 3B) 7/16-20 UNF
B external thread (Class 3A) 1/2-20 UNF
Ø max minor special .4630
Ø C (+.008/-.002) .439
D (+.015/-.000) .135
E .377
G (±.010) .660
J (±1) 39
Through-hole preparation Min. full THD depth .920; Min. full depth .695
Blind-hole preparation Min. full THD depth .820; Min. full depth .695
CSL720SP 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 CSTL720
Step drill part number CSD0468
Tap through tool part number TTI0500
Blind tap tool part number TBI0500
Removal tool part number CSRT720
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Crownserts is offering part CSL720SP as factory new.