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CS624AL

Imperial Structural Standard Crownserts

CS Series / Standard Type / AL / Structural

Installed using the Crownserts Hand-Installation Tool:  CST624

CS624AL is an imperial structural standard crownsert in 17-4PH stainless steel with IVD aluminium coating, designed to strengthen 3/8-24 UNF threads in lightweight parent materials. It uses 7/16-20 UNF external threads and CST624 installation tooling.

Crownserts can offer you the part CS624AL with Certificate of Quality, Certificate of Conformity and Certificate of Origin on request.

Thread & Dimensions

A internal thread (Class 3B) 3/8-24 UNF
B external thread (Class 3A) 7/16-20 UNF
Ø max minor special .4010
Ø C (+.008/-.002) .377
D (+.015/-.000) .110
F .370
G (±.010) .560
J (±1) 34
Through-hole preparation Min. full THD depth .820; Min. full depth .595
Blind-hole preparation Min. full THD depth .720; Min. full depth .595
CS624AL schematic

Material & Finish

Material 17-4PH, Cond H1025 per AMS 5643
Finish IVD ALUMINIUM coating per MIL-DTL-83488 type 2, Class 3 & SFL per SAE AS5272, Type I
Temperature range Up to 600°F
Heat treat RC 35-42
Magnetic YES

Tooling & Preparation

Hand-installation tool part number CST624
Step drill part number CSD0404
Tap through tool part number TTI0437
Blind tap tool part number TBI0437
Removal tool part number CSRT624

Crownserts is offering part CS624AL as factory new.