5/16-18 UNC
| Part No. | Remarks | THREAD SIZE | THREAD CALL OUT | HD ±.005 | L ±.015 | D MAX. | IL REF. | LB ±.015 | ILB REF. | IATD MAX. | HOLE DEPTH MIN. | THREAD | .030 - .090 MAT. THICKNESS DRILL SIZE | .030 - .090 MAT. THICKNESS DECIMAL | .091 - .124 MAT. THICKNESS DRILL SIZE | .091 - .124 MAT. THICKNESS DECIMAL | .125 - .186 MAT. THICKNESS DRILL SIZE | .125 - .186 MAT. THICKNESS DECIMAL | .187 - OVER MAT. THICKNESS DRILL SIZE | .187 - OVER MAT. THICKNESS DECIMAL |
| AT502C6-518 | AT502C6-518 | 5/16-18 UNC | 518 | 0.528 | 0.615 | 0.4995 | 0.325 | 1.065 | 0.77 | 0.63 | 0.64 | 5/16-18 UNC | 1/2 | 0.5 | 1/2 | 0.5 | 33/64 | 0.5156 | 33/64 | 0.5156 |
| AT502C7-518 | AT502C7-518 | 5/16-18 UNC | 518 | 0.528 | 0.615 | 0.4995 | 0.325 | 1.065 | 0.77 | 0.63 | 0.64 | 5/16-18 UNC | 1/2 | 0.5 | 1/2 | 0.5 | 33/64 | 0.5156 | 33/64 | 0.5156 |
| AT502C8-518 | AT502C8-518 | 5/16-18 UNC | 518 | 0.528 | 0.615 | 0.4995 | 0.325 | 1.065 | 0.77 | 0.63 | 0.64 | 5/16-18 UNC | 1/2 | 0.5 | 1/2 | 0.5 | 33/64 | 0.5156 | 33/64 | 0.5156 |
| AT502C9-518 | AT502C9-518 | 5/16-18 UNC | 518 | 0.528 | 0.615 | 0.4995 | 0.325 | 1.065 | 0.77 | 0.63 | 0.64 | 5/16-18 UNC | 1/2 | 0.5 | 1/2 | 0.5 | 33/64 | 0.5156 | 33/64 | 0.5156 |
| AT502C9A-518 | AT502C9A-518 | 5/16-18 UNC | 518 | 0.528 | 0.615 | 0.4995 | 0.325 | 1.065 | 0.77 | 0.63 | 0.64 | 5/16-18 UNC | 1/2 | 0.5 | 1/2 | 0.5 | 33/64 | 0.5156 | 33/64 | 0.5156 |
| AT502C9B-518 | AT502C9B-518 | 5/16-18 UNC | 518 | 0.528 | 0.615 | 0.4995 | 0.325 | 1.065 | 0.77 | 0.63 | 0.64 | 5/16-18 UNC | 1/2 | 0.5 | 1/2 | 0.5 | 33/64 | 0.5156 | 33/64 | 0.5156 |
| AT502C9T-518 | AT502C9T-518 | 5/16-18 UNC | 518 | 0.528 | 0.615 | 0.4995 | 0.325 | 1.065 | 0.77 | 0.63 | 0.64 | 5/16-18 UNC | 1/2 | 0.5 | 1/2 | 0.5 | 33/64 | 0.5156 | 33/64 | 0.5156 |
| AT502C10-518 | AT502C10-518 | 5/16-18 UNC | 518 | 0.528 | 0.615 | 0.4995 | 0.325 | 1.065 | 0.77 | 0.63 | 0.64 | 5/16-18 UNC | 1/2 | 0.5 | 1/2 | 0.5 | 33/64 | 0.5156 | 33/64 | 0.5156 |
