CSH428A286SP

Imperial Structural Heavy-Duty Standard Crownserts

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

Installed using the Crownserts Hand-Installation Tool:  CST428

CSH428A286SP CSH Series is a standard imperial Crownserts® threaded insert for durable thread reinforcement. A286 alloy with silver plating for demanding service; specified with 1/4-28 UNF internal thread and 11/32-24 NS installation thread.

Crownserts can offer you the part CSH428A286SP with Certificate of Quality, Certificate of Conformity and Certificate of Origin on request.

CSH428A286SP - Imperial Structural Heavy-Duty Standard Crownserts
CSH428A286SP - Imperial Structural Heavy-Duty Standard Crownserts
CSH428A286SP - Imperial Structural Heavy-Duty Standard Crownserts
CSH428A286SP - Imperial Structural Heavy-Duty Standard Crownserts
 How to install a Crownsert?
CSH428A286SP - Imperial Structural Heavy-Duty Standard Crownserts
CSH428A286SP - Imperial Structural Heavy-Duty Standard Crownserts
CSH428A286SP - Imperial Structural Heavy-Duty Standard Crownserts

Thread & Dimensions

A internal thread (Class 3B) 1/4-28 UNF
B external thread (Class 3A) 11/32-24 NS
Ø max minor special .2976
Ø C (+.008/-.002) .264
D (+.015/-.000) .095
F ref .240
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
CSH428A286SP 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 CSHT428
Step drill part number CSD0302
Tap through tool part number TTI0343
Blind tap tool part number TBI0343
Removal tool part number CSHRT428
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Crownserts is offering part CSH428A286SP as factory new.