| COLOR | BLACK OVERALL | 
| DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY | 0.509 INCHES NOMINAL | 
| EXTERNAL PREBENT KEY LENGTH | 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM | 
| EXTERNAL PREBENT KEY WIDTH | 0.172 INCHES MINIMUM AND 0.203 INCHES MAXIMUM | 
| HOLE DIAMETER | 0.688 INCHES MINIMUM AND 0.698 INCHES MAXIMUM | 
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | 
| MATERIAL THICKNESS | 0.078 INCHES MINIMUM AND 0.109 INCHES MAXIMUM | 
| MATERIAL | STEEL COMP 1020 OVERALL | 
| OUTSIDE DIAMETER | 0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM | 
| OVERALL DISTANCE INCLUDING KEYS | 1.040 INCHES NOMINAL | 
| SPECIAL FEATURES | CENTER HOLE HAS TWO FLATS PARALLEL TO AND OPPOSITE EACH OTHER WITH THE CENTER OF EACH LOCATED 90 DEGREES FROM CENTER OF KEY | 
| STYLE DESIGNATOR | KEY | 
| SURFACE TREATMENT | COPPER  AND OXIDE FILM OVERALL |