CSSL820SP

Imperial Short Crownserts

CSS Series / Locking Type / Inconel 718 SP / Short

Installed using the Crownserts Hand-Installation Tool:  CSTL820

CSSL820SP is an imperial short crownsert in Inconel 718 with silver-plated internal surfaces, designed to strengthen 1/2-20 UNJF-3B threads in lightweight parent materials. It uses 9/16-24 UNJEF-3A external threads and CSTL820 installation tooling.

Crownserts can offer you the part CSSL820SP with Certificate of Quality, Certificate of Conformity and Certificate of Origin on request.

CSSL820SP - Imperial Short Crownserts
CSSL820SP - Imperial Short Crownserts
CSSL820SP - Imperial Short Crownserts
CSSL820SP - Imperial Short Crownserts
 How to install a Crownsert?
CSSL820SP - Imperial Short Crownserts
CSSL820SP - Imperial Short Crownserts
CSSL820SP - Imperial Short Crownserts

Thread & Dimensions

Thread Ø A 1/2-20 UNJF-3B
Thread Ø B 9/16-24 UNJEF-3A
Minor diameter max .5290
Ø C (±.003) .507
D (±.010) .750
E ref .45
F (±.005) .120
G (±.005) .105
H ref .439
J 44
Through-hole preparation Min. full THD depth .973; Min. full depth .785
Blind-hole preparation Min. full THD depth .889; Min. full depth .785
CSSL820SP schematic

Material & Finish

Material Inconel 718 per AMS 5662
Finish Internal surfaces: Silver plated per AMS 2411 (0.0002 in min. thickness); External surfaces: Passivated per AMS 2700
Material note Only available as locking SP version.

Tooling & Preparation

Hand-installation tool part number CSTL820
Step drill part number CSD0531
Tap through tool part number TTI0561 / TTI0562
Blind tap tool part number TBI0561 / TBI0562
Removal tool part number CSRT820
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Crownserts is offering part CSSL820SP as factory new.