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CSHLM8X1.25A286

Metric Heavy Duty Locking Crownserts

CSHML Series / Locking Type / A286 / Heavy Duty

Installed using the Crownserts Hand-Installation Tool:  CSHTLM8

CSHLM8X1.25A286 is a metric heavy duty locking crownsert in A286 high-temperature alloy, with MJ8X1.25 internal and M12X1.5 external threads. Prepared for 10.376-10.612 mm tap drill and installed with CSHTLM8

Crownserts can offer you the part CSHLM8X1.25A286 with Certificate of Quality, Certificate of Conformity and Certificate of Origin on request.

Thread & Dimensions

Thread Ø A / class MJ8X1.25
Thread Ø B / class M12X1.5
Ø C (±0.15) 9,36
D (±0.3) 16,7
E (±0.2) 3,95
F ref 2,9
G min 2,00
H RAD min 3,64
R ref 10,3
Through-hole preparation Min. full THD depth 13,8 / 17,7; Min. full depth 19,3 / 23,2
Blind-hole preparation Min. full THD depth 13,8 / 17,7; Min. full depth 17,9 / 21,8
CSHLM8X1.25A286 schematic

Material & Finish

Material A286 per AMS5731 or AMS 5734
Finish PASSIVATED per AMS 2700 & Silver Plated per AMS 2411 (.0002 min. thickness)
Temperature range -400°/+1200°F
Heat treat RC 32-40
Magnetic NO

Tooling & Preparation

Hand-installation tool part number CSHTLM8
Step drill part number CSHD1061
Tap through tool part number TTIM12
Blind tap tool part number TBIM12
Removal tool part number CSHRTM8

Crownserts is offering part CSHLM8X1.25A286 as factory new.