CSL820

Imperial Structural Locking Crownserts

CSL Series / Locking Type / 17-4PH / Structural

Installed using the Crownserts Hand-Installation Tool:  CSTL820

CSL820 reinforces or repairs 1/2-20 UNF imperial threads in aluminium, magnesium or other non-ferrous materials. 17-4PH stainless steel, with .531 17/32 tap-hole guidance and CSTL820 hand installation tooling.

Crownserts can offer you the part CSL820 with Certificate of Quality, Certificate of Conformity and Certificate of Origin on request.

CSL820 - Imperial Structural Locking Crownserts
CSL820 - Imperial Structural Locking Crownserts
CSL820 - Imperial Structural Locking Crownserts
CSL820 - Imperial Structural Locking Crownserts
 How to install a Crownsert?
CSL820 - Imperial Structural Locking Crownserts
CSL820 - Imperial Structural Locking Crownserts
CSL820 - Imperial Structural Locking Crownserts

Thread & Dimensions

A internal thread (Class 3B) 1/2-20 UNF
B external thread (Class 3A) 9/16-24 UNEF
Ø max minor special .5290
Ø C (+.008/-.002) .505
D (+.015/-.000) .135
E .439
G (±.010) .750
J (±1) 44
Through-hole preparation Min. full THD depth .973; Min. full depth .785
Blind-hole preparation Min. full THD depth .889; Min. full depth .785
CSL820 schematic

Material & Finish

Material 17-4PH, Cond H1025 per AMS 5643
Finish PASSIVATED per AMS 2700 & SFL coated per SAE AS5272, Type I
Temperature range -110°/+650°F
Heat treat RC 35-42
Magnetic YES
Material note Standard material code; no suffix added to the part number.

Tooling & Preparation

Hand-installation tool part number CSTL820
Step drill part number CSD0531
Tap through tool part number TTI0562
Blind tap tool part number TBI0562
Removal tool part number CSRT820
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Crownserts is offering part CSL820 as factory new.