CSL1216A286

Imperial Large Crownserts

CS Series / Locking Type / A286 / Large

Installed using the Crownserts Hand-Installation Tool:  CST1216

CSL1216A286 is an imperial large crownsert in A286 high-temperature alloy, designed to strengthen 3/4-16 UNF threads in lightweight parent materials. It uses 7/8-20 UNEF external threads and CST1216 installation tooling.

Crownserts can offer you the part CSL1216A286 with Certificate of Quality, Certificate of Conformity and Certificate of Origin on request.

CSL1216A286 - Imperial Large Crownserts
CSL1216A286 - Imperial Large Crownserts
CSL1216A286 - Imperial Large Crownserts
CSL1216A286 - Imperial Large Crownserts
 How to install a Crownsert?
CSL1216A286 - Imperial Large Crownserts
CSL1216A286 - Imperial Large Crownserts
CSL1216A286 - Imperial Large Crownserts

Thread & Dimensions

A internal thread (Class 3B) 3/4-16 UNF
B external thread (Class 3A) 7/8-20 UNEF
Ø max minor special .8240
Ø C (+.008/-.002) .756
D (+.015/-.000) .170
F .750
G (±.010) 1.120
J (±1) 44
E .648
Through-hole preparation Min. full THD depth 1.380; Min. full depth 1.155
Blind-hole preparation Min. full THD depth 1.280; Min. full depth 1.155
CSL1216A286 schematic

Material & Finish

Material A286 per AMS5731 or AMS 5734
Finish PASSIVATED per AMS 2700 & SFL coated per SAE AS5272, Type 1
Temperature range -400°/+650°F
Heat treat RC 32-40
Magnetic NO

Tooling & Preparation

Hand-installation tool part number CST1216
Step drill part number CSD0836
Tap through tool part number TTI0875
Blind tap tool part number TBI0875
Removal tool part number CSRT1216
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Crownserts is offering part CSL1216A286 as factory new.