The Gear,spur, cataloged under National Stock Number 3020-00-118-4262, 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 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 24 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 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 | 3020-00-118-4262 |
| Primary Part Number | 137796 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Bore Nominal Diameter | 5.063 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 5.430 INCHES BOTH ENDS IN |
| Teeth Quantity | 61 |
| Surface Treatment Document and Classification | AMS2412 ASSN STD SINGLE TREATMENT RESPONSE BODY |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 5.130 INCHES BOTH ENDS IN |
| Bore Style | W/COUNTERBORE BOTH ENDS |
| Mounting Hole Type and Quantity | 1 PLAIN TRANSVERSELY THROUGH HUB FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.020 INCHES BOTH ENDS IN |
| Mounting Hole Nominal Diameter | 0.067 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Hardness Rating | 47.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Overall Length | 0.2700 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | AMS6328 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 5.5454 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 5.822 INCHES IN |
| Surface Treatment | SILVER BODY |
| Pressure Angle | 22.5000 DEGREES |
| Material | STEEL OVERALL |
| Counterbore Nominal Depth | 0.064 INCHES BOTH ENDS IN |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.2300 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 3020-00-118-4262 is a Gear,spur, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-118-4262 has 2 manufacturer part numbers on file: 137796 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 137796 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).
1 possible match (shared part number, not a government interchangeability claim): 5306-01-204-3297. Verify interchangeability with system specifications before substitution.
Key specifications for 137796: Bore Nominal Diameter: 5.063 INCHES BOTH ENDS IN; Hub Nominal Diameter: 5.430 INCHES BOTH ENDS IN; Teeth Quantity: 61; Surface Treatment Document and Classification: AMS2412 ASSN STD SINGLE TREATMENT RESPONSE BODY. 24 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.