Having 7 (5.1 millimeter diameter) holes used to fasten down to equipment; cover must go through a two step homogenizing process to make more resistant to different solvents; all edges are chamfered and special treatment
NSN 4140-01-382-6831
NSN 5905-00-452-7068
NSN 6145-00-011-2390
NSN 5965-01-356-6340
NSN 6220-00-932-2500
NSN 7035-01-123-8723
NSN 6650-01-273-3152
NSN 5960-01-051-1454
NSN 6610-00-614-1703
NSN 5985-01-350-3454
NSN 5950-00-917-4393
NSN 6150-01-250-5539