| DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY | 0.181 INCHES MINIMUM AND 0.191 INCHES MAXIMUM |
| ANGLE BETWEEN EXTERNAL KEYS | 48.0 DEGREES MINIMUM AND 52.0 DEGREES MAXIMUM |
| EXTERNAL KEY QUANTITY | 3 |
| EXTERNAL PREBENT KEY ANGLE | 15.0 DEGREES NOMINAL |
| EXTERNAL PREBENT KEY LENGTH | 0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM |
| EXTERNAL PREBENT KEY WIDTH | 0.085 INCHES MAXIMUM |
| EXTERNAL TAPERED KEY WIDTH | 0.185 INCHES MAXIMUM |
| HOLE DIAMETER | 0.170 INCHES MINIMUM AND 0.175 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | ABS S521 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) 10TH MATERIAL RESPONSE OVERALL |
| MATERIAL THICKNESS | 0.022 INCHES NOMINAL |
| III MATERIAL | STEEL OVERALL |
| OUTSIDE DIAMETER | 0.310 INCHES MINIMUM AND 0.320 INCHES MAXIMUM |
| OVERALL DISTANCE INCLUDING KEYS | 0.478 INCHES MINIMUM AND 0.498 INCHES MAXIMUM |
| SPECIAL FEATURES | PROTUBERANCE ON PERIPHERY,0.075IN. NOM RADIUS ON CENTRE LINE OF WASHER AT 90 DEG TO KEYS |
| SPLIT KEY LENGTH | 0.110 INCHES MINIMUM AND 0.125 INCHES MAXIMUM |
| STYLE DESIGNATOR | KEY |