Skip to main content

CSH0256A286SP

Imperial Miniature Heavy-Duty Crownserts

CSH Series / Standard Type / A286SP / Miniature Heavy-Duty

Installed using the Crownserts Hand-Installation Tool:  CSHT02

CSH0256A286SP reinforces or repairs 2-56 UNC imperial threads in aluminium, magnesium or other non-ferrous materials. A286 alloy with silver plating for demanding service, with .140 #28 tap-hole guidance and CSHT02 hand installation tooling.

Crownserts can offer you the part CSH0256A286SP with Certificate of Quality, Certificate of Conformity and Certificate of Origin on request.

Thread & Dimensions

A internal thread (Class 3B) 2-56 UNC
B external thread (Class 3A) 8-32 UNC
Ø max minor special .1380
Ø C (+.008/-.002) .116
D (+.015/-.000) .042
F ref .080
G (±.010) .130
Through-hole preparation Min. full depth 0,160
Blind-hole preparation Min. full depth 0,160
CSH0256A286SP 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 CSHT02
Step drill part number CSD0140
Tap through tool part number TTI0164
Blind tap tool part number TBI0164
Removal tool part number CSHRT02

Crownserts is offering part CSH0256A286SP as factory new.