0.140 in. spacing between each rib; 7 ribs width; 1583 millimeters
NSN 6135-00-519-1325
NSN 5930-00-171-0141
NSN 6110-01-139-2182
NSN 5985-01-457-7716
NSN 6645-00-119-6221
NSN 5975-00-797-4719
NSN 5855-00-294-7532
NSN 7035-01-123-8723
NSN 5998-01-531-3387
NSN 5960-00-347-7488
NSN 5975-01-244-4636
NSN 6135-00-134-6648