1/4-28 SAE-LT thread depth

[1naginnif]

Can someone tell me what the thread depth should be for 1/4-28 SAE-LT? I lost my SAE standards disk

 

[Tmoose]

https://www.saeproducts.com/grease-fittings-H100.html

This is mighty strange -
It is recommended that SAE-LT taper threads (Society of Automotive Engineers Lubrication Threads) be installed into straight holes with a 1/4''-28 UNF-3B straight-threaded hole.

https://www.saeproducts.com/taper-thread-grease-fittings.html

McMaster Carr agrees -

https://www.mcmaster.com/pipe-fittings/thread-type~sae-lt/

 

[1naginnif]

yeah, I have that, but none of those references say what the thread depth in the hole should be. But thanks anyway

 

[hydtools]

Looks like a minimum of 0.250 inches.

Ted