The Sprocket Wheel, cataloged under National Stock Number 3020-01-221-3758, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 22 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-221-3758 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Securing Method | THREADED HOLE(S) |
| Bore Length | 0.500 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Teeth Hardness Rating | 50.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM |
| Tooth Pitch | 0.187 INCHES NOMINAL IN |
| Outside Diameter | 1.897 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Material Document and Classification | QQ-S-633-CANCELED FED SPEC SINGLE MATERIAL RESPONSE |
| Pitch Diameter | 1.913 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 32 |
| Protruding Hub Characteristic | STEPPED |
| Hardness Rating Test Method | ROCKWELL |
| Securing Hole Quantity | 1 |
| Thread Size | 0.138-32 |
| Surface Treatment | CADMIUM |
| Hole Location | HUB END,BETWEEN HUB END AND SPROCKET FACE |
| Bore Diameter | 0.250 INCHES NOMINAL IN |
| Material | STEEL COMP 1008 OR STEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1012 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1023 OR STEEL COMP 1524 OR STEEL COMP 1025 OR STEEL COMP 1026 OR STEEL COMP 1527 OR STEEL COMP 1029 OR STEEL COMP 1030 OR STEEL COMP 1031 OR STEEL COMP 1033 OR STEEL COMP 1035 OR STEEL COMP 1037 OR STEEL COMP 1038 OR STEEL COMP 1039 OR STEEL COMP 1040 OR STEEL COMP 1541 OR STEEL COMP 1042 OR STEEL COMP 1043 OR STEEL COMP 1045 OR STEEL COMP 1046 OR STEEL COMP 1049 OR STEEL COMP 1050 OR STEEL COMP 1536 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1055 OR STEEL COMP 1060 OR STEEL COMP 1070 OR STEEL COMP 1078 OR STEEL COMP 1080 OR STEEL COMP 1084 OR STEEL COMP 1085 OR STEEL COMP 1086 OR STEEL COMP 1090 OR STEEL COMP 1095 OR STEEL COMP 1108 OR STEEL COMP 1109 OR STEEL COMP 1110 OR STEEL COMP 1126 OR STEEL COMP 1115 OR STEEL COMP 1116 OR STEEL COMP 1117 OR STEEL COMP 1118 OR STEEL COMP 1119 OR STEEL COMP 1120 OR STEEL COMP 1125 OR STEEL COMP 1132 OR STEEL COMP 1137 OR STEEL COMP 1138 OR STEEL COMP 1139 OR STEEL COMP 1140 OR STEEL COMP 1141 OR STEEL COMP 1144 OR STEEL COMP 1145 OR STEEL COMP 1146 OR STEEL COMP 1151 OR STEEL COMP 1211 OR STEEL COMP 1212 OR STEEL COMP 1213 |
| Face Width | 0.140 INCHES NOMINAL IN |
| Securing Location | AA END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| G306707 | 3/9 Design control — primary reference Zagora Gear Products Inc |
| G306707 | 5/9 Secondary reference American Telephone and Telegraph Co |
NSN 3020-01-221-3758 is a Sprocket Wheel, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-221-3758: Securing Method: THREADED HOLE(S); Bore Length: 0.500 INCHES NOMINAL IN; Design Form: PLAIN; Teeth Hardness Rating: 50.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM. 22 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.