SR-318L

Imperial Structural Locking Inserts

Locking Type / 17-4PH / Structural

Installed using the Crownserts Hand-Installation Tool:  CSTL518

SR-318L CS Series is a locking imperial insert. 17-4PH stainless; 5/16-18 UNC internal, 3/8-24 UNF installation threads. This is an old Anemo part. Please use CSL518

We can offer you the part SR-318L with Certificate of Quality, Certificate of Conformity and Certificate of Origin on request.

SR-318L - Imperial Structural Locking Inserts
SR-318L - Imperial Structural Locking Inserts
SR-318L - Imperial Structural Locking Inserts
SR-318L - Imperial Structural Locking Inserts
 How to install a Crownsert?
SR-318L - Imperial Structural Locking Inserts
SR-318L - Imperial Structural Locking Inserts
SR-318L - Imperial Structural Locking Inserts

Thread & Dimensions

A internal thread (Class 3B) 5/16-18 UNC
B external thread (Class 3A) 3/8-24 UNF
Ø max minor special .3405
Ø C (+.008/-.002) .314
D (+.015/-.000) .110
E .266
G (±.010) .470
J (±1) 29
Through-hole preparation Min. full THD depth .693; Min. full depth .505
Blind-hole preparation Min. full THD depth .693; Min. full depth .505
SR-318L 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 CSTL518
Step drill part number CSD0343
Tap through tool part number TTI0375
Blind tap tool part number TBI0375
Removal tool part number CSRT518
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