Cross section is diamond shape
NSN 5915-01-339-5079
NSN 6610-01-168-7943
NSN 6240-01-487-6459
NSN 5835-00-729-9305
NSN 6145-01-185-3386
NSN 5915-01-078-7972
NSN 6620-01-097-7078
NSN 5855-01-472-2554
NSN 7035-01-085-5955
NSN 6105-01-479-5494
NSN 6240-01-627-6936
NSN 5998-01-422-9207