SR-318

Imperial Structural Standard Inserts

Standard Type / 17-4PH / Structural

Installed using the Crownserts Hand-Installation Tool:  CST518

SR-318 repairs/reinforces 5/16-18 UNC imperial threads in Al/Mg or other non-ferrous materials; 17-4PH stainless. Tap hole .343 11/32; install with CST518. This is an old Anemo part. Please use CS518.

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

SR-318 - Imperial Structural Standard Inserts
SR-318 - Imperial Structural Standard Inserts
SR-318 - Imperial Structural Standard Inserts
SR-318 - Imperial Structural Standard Inserts
 How to install a Crownsert?
SR-318 - Imperial Structural Standard Inserts
SR-318 - Imperial Structural Standard Inserts
SR-318 - Imperial Structural Standard 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
F .310
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-318 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 CST518
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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