0.140 in. spacing between each rib; 7 ribs width; 1583 millimeters
NSN 6620-01-021-9768
NSN 6220-01-449-0952
NSN 6240-00-269-3346
NSN 6150-00-617-1580
NSN 5945-01-355-2670
NSN 6610-00-719-8446
NSN 5950-01-168-8071
NSN 5945-01-200-7300
NSN 5999-00-581-6752
NSN 5895-01-288-0753
NSN 6645-01-462-3754
NSN 5975-01-555-1527