CSHL820AD

Imperial Structural Heavy-Duty Locking Crownserts

CSH Series / Locking Type / AD / Structural Heavy-Duty

Installed using the Crownserts Hand-Installation Tool:  CSHTL820

CSHL820AD reinforces or repairs 1/2-20 UNF imperial threads in aluminium, magnesium or other non-ferrous materials. 4130 alloy steel for high mechanical strength, with .578 37/64 tap-hole guidance and CSHTL820 hand installation tooling.

Crownserts can offer you the part CSHL820AD with Certificate of Quality, Certificate of Conformity and Certificate of Origin on request.

CSHL820AD - Imperial Structural Heavy-Duty Locking Crownserts
CSHL820AD - Imperial Structural Heavy-Duty Locking Crownserts
CSHL820AD - Imperial Structural Heavy-Duty Locking Crownserts
CSHL820AD - Imperial Structural Heavy-Duty Locking Crownserts
 How to install a Crownsert?
CSHL820AD - Imperial Structural Heavy-Duty Locking Crownserts
CSHL820AD - Imperial Structural Heavy-Duty Locking Crownserts
CSHL820AD - Imperial Structural Heavy-Duty Locking Crownserts

Thread & Dimensions

A internal thread (Class 3B) 1/2-20 UNF
B external thread (Class 3A) 5/8-18UNF
Ø max minor special .5618
Ø C (+.008/-.002) .528
D (+.015/-.000) .135
E ref .439
G (±.010) .750
Through-hole preparation Min. full THD depth 1.035; Min. full depth 0,785
Blind-hole preparation Min. full THD depth .924; Min. full depth 0,785
CSHL820AD schematic

Material & Finish

Material Alloy Steel 4130 per AMS 6370
Finish Cadmium Plated per AMS-QQ-P-416 Type 2, Class 3 & SFL per SAE AS5272
Temperature range Up to 450+°F
Heat treat RC 25-34
Magnetic YES

Tooling & Preparation

Hand-installation tool part number CSHTL820
Step drill part number CSD0578
Tap through tool part number TTI0625
Blind tap tool part number TBI0625
Removal tool part number CSHRT820
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Crownserts is offering part CSHL820AD as factory new.