The Sprocket Wheel, cataloged under National Stock Number 3020-00-378-8901, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Brinkley Technology Group Llc Dba Hercules Manufacturing. Government technical data includes 29 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-378-8901 |
| Primary Part Number | SC68 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Brinkley Technology Group Llc Dba Hercules Manufacturing |
| Status | ACTIVE |
| Hub Outside Diameter | 1.750 INCHES NOMINAL AA END IN |
| Securing Method | DRILLED HOLE |
| Bore Length | 1.141 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Teeth Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 63.0 ROCKWELL C MAXIMUM |
| Lubrication Mode | NO VISIBLE MEANS |
| Tooth Pitch | 0.375 INCHES NOMINAL IN |
| Asa Standard Chain Number | 150-1 |
| Outside Diameter | 3.109 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | PLAIN |
| Metallic Hardness Rating and Location | 45.0 ROCKWELL C MINIMUM BODY AND 63.0 ROCKWELL C MAXIMUM BODY |
| Material Document and Classification | B1113 OR C1035 ASSN STD ALL MATERIAL RESPONSES |
| Pitch Diameter | 2.809 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 14 |
| Protruding Hub Characteristic | PLAIN |
| Hardness Rating Test Method | ROCKWELL |
| Distance From Center of Bore to Bottom of Keyway | 0.453 INCHES NOMINAL IN |
| Distance From Hub End to Flange End | 0.986 INCHES NOMINAL BB END IN |
| Securing Hole Quantity | 1 |
| Drilled Hole Diameter | 0.190 INCHES NOMINAL IN |
| Keyway Width | 0.156 INCHES NOMINAL IN |
| Hole Location | 17/64 IN. FROM FACE OF HUB TO CENTER OF HOLE IN |
| Bore Diameter | 0.750 INCHES NOMINAL IN |
| Material | STEEL COMP 1213 OR STEEL COMP 1035 |
| Furnished Items | KEYING FACILITY AND BORE BEARING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| SC68 PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| 18359A PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| 9021PC18359A PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| Reference | Meaning |
|---|---|
| SC68 | 5/9 Secondary reference Hercules Engine Co Inc |
| 9021PC18359A | 5/9 Secondary reference Hercules Engine Co Inc |
| SC68 | 5/9 Secondary reference Diamond Chain Co Div of Amsted Industries Inc |
| 18359A | 5/9 Secondary reference Hercules Engine Co Inc |
| 05789900 | 5/2 Secondary reference U.S. Government activity |
NSN 3020-00-378-8901 is a Sprocket Wheel, manufactured by Brinkley Technology Group Llc Dba Hercules Manufacturing, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-378-8901 has 3 manufacturer part numbers on file: SC68 (Brinkley Technology Group Llc Dba Hercules Manufacturing), 18359A (Brinkley Technology Group Llc Dba Hercules Manufacturing), 9021PC18359A (Brinkley Technology Group Llc Dba Hercules Manufacturing).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-410-6674. Verify interchangeability with system specifications before substitution.
Key specifications for SC68: Hub Outside Diameter: 1.750 INCHES NOMINAL AA END IN; Securing Method: DRILLED HOLE; Bore Length: 1.141 INCHES NOMINAL IN; Design Form: PLAIN. 29 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.