4 holes 0.220 min, 0.250 max radius; 3 grommet holes 0.311 min, 0.318 max radius; 5 holes 0.515 min, 0.546 max radius counterbore, 0.735 min, 0.765 max diameter by 0.125 min, 0.156 max in. Deep; all counterbored holes 0.016 outer radius permissible
NSN 6685-01-434-6431
NSN 5998-01-238-0364
NSN 6135-01-260-7180
NSN 6620-00-121-4632
NSN 6685-01-537-8323
NSN 5998-01-201-2474
NSN 2925-00-295-4765
NSN 6150-00-578-1952
NSN 5990-01-438-8228
NSN 6110-01-391-0211
NSN 5985-00-196-5695
NSN 5920-01-351-0366
Last Updated: 08/11/2025