Skip to main content

SR-500L0029

Imperial Structural Locking Inserts

Locking Type / A286AL / Structural

Installed using the Crownserts Hand-Installation Tool:  CSTL820

SR-500L0029 repairs/reinforces 1/2-20 UNF imperial threads in Al/Mg or other non-ferrous materials; IVD-coated A286 alloy. Tap hole .531 17/32; install with CSTL820. This is an old Anemo part. Please use CSL820A286AL.

We can offer you the part SR-500L0029 with Certificate of Quality, Certificate of Conformity and Certificate of Origin on request.

Thread & Dimensions

A internal thread (Class 3B) 1/2-20 UNF
B external thread (Class 3A) 9/16-24 UNEF
Ø max minor special .5290
Ø C (+.008/-.002) .505
D (+.015/-.000) .135
E .439
G (±.010) .750
J (±1) 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
SR-500L0029 schematic

Material & Finish

Material A286 per AMS5731 or AMS 5734
Finish IVD ALUMINIUM coating per MIL-DTL-83488 type 2, Class 3 & SFL per SAE AS5272, Type I
Temperature range Up to 600°F
Heat treat RC 32-40
Magnetic NO

Tooling & Preparation

Hand-Installation tool part number CSTL820
Step drill part number CSD0531
Tap through tool part number TTI0562
Blind tap tool part number TBI0562
Removal tool part number CSRT820