D38999 connectors can be had on rswww, digi key or farnell. they come as a set with the insert tool and pins if you order them right. The biggest pain is the crimp tool.. but they are easy to get also.
Soriou is a good manufacturer of connectors and their website has a very useful catalog. The part number works like this
D38999/25 WC35PN
D38999 is the type of connector standard.
/25 is the style of connector (differen numbers for plug, receptacle etc..)
W this letter denotes the finish of the connector(w=cad plated ally)
C size, make sure this matches if you want them to fit together.
35 insert layout (what pins, how many, where) make sure these match too.
P p=pins s= sockets. Make sure you have one of each in a pair.
N this letter is from (a,b,c,d,e,n) and denotes the foolproof keying.
You will find the souriou catalog here:
click
The inserts layouts are explained in mil-std-1560. You can get to all the mil specs through the defense standardisation program at
www.dsp.dla.mil. poke abouk through specs and standards until you get to
click just type in the numerical portion of the standard you require. 38999 will get all the styles of connector.
I'll have a rummage through a raychem catalog if anyone is after data for specific products. I'll have a poke around and see if i can find it online too.
38999 connectors are about £15/connector but you need to order without a C of C
Hope this helps.
Rich