SR-374L

Imperial Structural Locking Inserts

Locking Type / 17-4PH / Structural

Installed using the Crownserts Hand-Installation Tool:  CSTL624

SR-374L repairs/reinforces 3/8-24 UNF imperial threads in Al/Mg or other non-ferrous materials; 17-4PH stainless. Tap hole .404 size Y; install with CSTL624. This is an old Anemo part. Please use CSL624.

We can offer you the part SR-374L with Certificate of Quality, Certificate of Conformity and Certificate of Origin on request.

SR-374L - Imperial Structural Locking Inserts
SR-374L - Imperial Structural Locking Inserts
SR-374L - Imperial Structural Locking Inserts
SR-374L - Imperial Structural Locking Inserts
 How to install a Crownsert?
SR-374L - Imperial Structural Locking Inserts
SR-374L - Imperial Structural Locking Inserts
SR-374L - Imperial Structural Locking Inserts

Thread & Dimensions

A internal thread (Class 3B) 3/8-24 UNF
B external thread (Class 3A) 7/16-20 UNF
Ø max minor special .4010
Ø C (+.008/-.002) .377
D (+.015/-.000) .110
E .322
G (±.010) .560
J (±1) 34
Through-hole preparation Min. full THD depth .820; Min. full depth .595
Blind-hole preparation Min. full THD depth .720; Min. full depth .595
SR-374L schematic

Material & Finish

Material 17-4PH, Cond H1025 per AMS 5643
Finish PASSIVATED per AMS 2700 & SFL coated per SAE AS5272, Type I
Temperature range -110°/+650°F
Heat treat RC 35-42
Magnetic YES
Material note Standard material code; no suffix added to the part number.

Tooling & Preparation

Hand-Installation tool part number CSTL624
Step drill part number CSD0404
Tap through tool part number TTI0437
Blind tap tool part number TBI0437
Removal tool part number CSRT624
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