NSN 3020-00-098-1781
Part Details | GROOVE PULLEY
3020-00-098-1781 A pulley with one or more grooved faces or rims of the same diameter. For pulleys encased in a shell or frame, see BLOCK, TACKLE. For items specifically designed for aviation, see PULLEY(1), GROOVE, AVIATION.
Alternate Parts: 321250, 321250, 3020-00-098-1781, 00-098-1781, 3020000981781, 000981781
Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
---|---|---|---|
30 | JAN 01, 1963 | 00-098-1781 | 08109 ( PULLEY, GROOVE ) |
REFERENCE DRAWINGS & PICTURES
PLAIN

Cross Reference | NSN 3020-00-098-1781
Part Number | Cage Code | Manufacturer |
---|---|---|
321250 | 3G892 | ELECTRO MACHINE AND TOOL CO |
321250 | 73030 | HAMILTON SUNDSTRAND CORPORATION |
Technical Data | NSN 3020-00-098-1781
Characteristic | Specifications |
---|---|
STYLE DESIGNATOR | PLAIN |
OUTSIDE DIAMETER | 4.375 INCHES NOMINAL |
FACE WIDTH | 0.225 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
DESIGN FORM | PLAIN |
LIGHTENING HOLE | NOT INCLUDED |
INTEGRAL COOLING VANE | NOT INCLUDED |
GROOVE SHAPE | V |
GROOVE QUANTITY | 1 |
GROOVE DEPTH | 0.187 INCHES NOMINAL |
V GROOVE ANGLE IN DEG | 30.0 |
BORE FEATURE | INCLUDED |
BEARINGS | NOT INCLUDED |
BORE TYPE | INVOLUTE SPLINE |
SPLINE QUANTITY | 12 |
SPLINE PRESSURE ANGLE IN DEG | 30.0 |
SPLINE PITCH DIAMETER | 0.6000 INCHES NOMINAL |
SPLINE MAJOR DIAMETER | 0.682 INCHES NOMINAL |
SPLINE MINOR DIAMETER | 0.560 INCHES MINIMUM AND 0.563 INCHES MAXIMUM |
SPLINE LENGTH | 0.223 INCHES MINIMUM AND 0.225 INCHES MAXIMUM |
SPLIT HUB FEATURE | NOT INCLUDED |
SECURING METHOD | DRILLED HOLE |
SECURING HOLE QUANTITY | 18 |
HOLE LOCATION | HOLES EQUALLY SPACED,1ST HOLE IN LINE W/CENTERLINE THRU SPLINE GROOVES WITHIN 0.030 |
BOLT CIRCLE DIAMETER | 2.500 INCHES NOMINAL |
DRILLED HOLE DIAMETER | 0.191 INCHES MINIMUM AND 0.194 INCHES MAXIMUM |
SPECIAL FEATURES | SECURING HOLESCOUNTERBORED 0.312 IN. DIABY .037/.077 IN. DEEP,ONERECTANGULAR NOTCH LOCATED IN OUTER EDGE,BASE OF NOTCH 1.530/1.540 IN. FROM CENTER,0.498/0.501 IN. W |