0.140 in. spacing between each rib; 7 ribs width; 1583 millimeters
NSN 5998-01-583-6440
NSN 5990-01-492-6575
NSN 6685-00-132-5126
NSN 5925-01-444-2746
NSN 5925-00-184-5973
NSN 5975-01-141-3262
NSN 5950-01-214-9548
NSN 6650-01-645-2850
NSN 5935-00-644-9978
NSN 6685-00-717-4058
NSN 5930-01-260-5931
NSN 6645-00-536-1555