CSHL420AD

Imperial Structural Heavy-Duty Locking Crownserts

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

Installed using the Crownserts Hand-Installation Tool:  CSHTL420

CSHL420AD CSH Series is a locking imperial Crownserts® threaded insert for durable thread reinforcement. 4130 alloy steel for high mechanical strength; specified with 1/4-20 UNC internal thread and 11/32-24 NS installation thread.

Crownserts can offer you the part CSHL420AD with Certificate of Quality, Certificate of Conformity and Certificate of Origin on request.

CSHL420AD - Imperial Structural Heavy-Duty Locking Crownserts
CSHL420AD - Imperial Structural Heavy-Duty Locking Crownserts
CSHL420AD - Imperial Structural Heavy-Duty Locking Crownserts
CSHL420AD - Imperial Structural Heavy-Duty Locking Crownserts
 How to install a Crownsert?
CSHL420AD - Imperial Structural Heavy-Duty Locking Crownserts
CSHL420AD - Imperial Structural Heavy-Duty Locking Crownserts
CSHL420AD - Imperial Structural Heavy-Duty Locking Crownserts

Thread & Dimensions

A internal thread (Class 3B) 1/4-20 UNC
B external thread (Class 3A) 11/32-24 NS
Ø max minor special .2976
Ø C (+.008/-.002) .264
D (+.015/-.000) .095
E ref .210
G (±.010) .380
Through-hole preparation Min. full THD depth .602; Min. full depth 0,415
Blind-hole preparation Min. full THD depth .519; Min. full depth 0,415
CSHL420AD 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 CSHTL420
Step drill part number CSD0302
Tap through tool part number TTI0343
Blind tap tool part number TBI0343
Removal tool part number CSHRT420
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Crownserts is offering part CSHL420AD as factory new.