| LIGHTENING HOLE | NOT INCLUDED |
| TEETH QUANTITY PER ROW | 23 |
| DISTANCE FROM OUTSIDE FLANGE/RIM TO HUB END AND LOCATION | 0.645 INCHES MINIMUM AA END AND 0.665 INCHES MAXIMUM AA END |
| DESIGN FORM | PLAIN |
| COUNTERBORE FEATURE | INCLUDED |
| SECURING METHOD | THREADED HOLE |
| OUTSIDE DIAMETER | 3.937 INCHES NOMINAL |
| TEETH ROW QUANTITY | 3 |
| BORE LENGTH | 2.050 INCHES MINIMUM AND 2.055 INCHES MAXIMUM |
| HARDNESS RATING TEST METHOD | ROCKWELL |
| SECURING LOCATION | AA END |
| COUNTERBORE DEPTH | 0.670 INCHES MINIMUM AND 0.680 INCHES MAXIMUM AND 1.300 INCHES MINIMUM AND 1.305 INCHES MAXIMUM |
| BORE DIAMETER | 1.749 INCHES MINIMUM AND 1.750 INCHES MAXIMUM |
| KEYING FACILITY | NOT INCLUDED |
| OVERALL LENGTH | 2.050 INCHES MINIMUM AND 2.055 INCHES MAXIMUM |
| PITCH DIAMETER | 3.672 INCHES NOMINAL |
| FACE WIDTH | 1.390 INCHES MINIMUM AND 1.405 INCHES MAXIMUM |
| ASA STANDARD CHAIN NUMBER | 40-3 |
| STYLE DESIGNATOR | PLAIN |
| BELT/CHAIN/FILM SIZE FOR WHICH DESIGNED | ROLLER CHAIN |
| TOOTH PITCH | 0.500 INCHES NOMINAL |
| COUNTERBORE DIAMETER | 2.440 INCHES NOMINAL AND 2.188 INCHES NOMINAL |
| BORE BEARING | NOT INCLUDED |
| MATERIAL | STEEL COMP 1020 |
| HUB END OUTSIDE DIAMETER AND LOCATION | 3.031 INCHES NOMINAL AA END |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-633, FS1020-CANCELED FED SPEC SINGLE MATERIAL RESPONSE |
| HOLE LOCATION | LOCATED 90 DEG APART ON 2.375 IN. BOLT CIRCLE ON HUB FACE |
| BORE TYPE | STRAIGHT |
| CENTER TO CENTER DISTANCE BETWEEN TEETH ROWS | 0.557 INCHES MINIMUM AND 0.567 INCHES MAXIMUM |
| TEETH HARDNESS RATING | 37.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM |
| SECURING HOLE QUANTITY | 4 |
| THREAD SIZE | 3/8 IN.-24 NF3 TAP |
| METALLIC HARDNESS RATING AND LOCATION | 37.0 ROCKWELL C MINIMUM BODY AND 45.0 ROCKWELL C MAXIMUM BODY |
| COUNTERBORE LOCATION | BB END |
| ROLLER CHAIN PITCH TYPE FOR WHICH DESIGNED | DOUBLE PITCH |