NSA50549N

Imperial Large Inserts

Standard Type / AD / Large

NSA50549N is an imperial large insert in 4130 alloy steel for 9/16-12 UNC threads in light alloys; 11/16-12 UN external.

This is an old part number for Anemo. We strongly recommend our alternative part CS912AD, which has the same properties.

How to install a Crownsert?

A internal thread (Class 3B) 9/16-12 UNC

B external thread (Class 3A) 11/16-12 UN

Ø max minor special .6130

Ø C (+.008/-.002) .571

D (+.015/-.000) .145

F .550

G (±.010) .840

J (±1) 42

Combo swage and drive tool part n° CST912

Through-hole preparation Min. full THD depth 1.248; Min. full depth .873

Blind-hole preparation Min. full THD depth 1.081; Min. full depth .873

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

Combo swage and drive installation tool CST912

Tap-through tool TTI0687

Blind tap tool TBI0687

Step drill tool CSD0625

Removal tool CSRT912, CSRT918

Wobble broach CSBT912W

After-swage gage CSASG912

Serration gage CSSG912