The Gear,spur, cataloged under National Stock Number 3020-00-981-9228, 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 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-00-981-9228 |
| Primary Part Number | 461381 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Rtx Corporation Div Pratt & Whitney |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.549 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.120 INCHES BOTH ENDS IN |
| Teeth Quantity | 54 |
| Body Style | WEBBED, OFFSET, WITH LIGHTENING HOLES |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Mounting Hole Type and Quantity | 3 PLAIN TRANSVERSELY THROUGH HUB FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.100 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.038 INCHES SECOND END IN |
| Mounting Hole Nominal Diameter | 0.172 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Hardness Rating | 30.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM HUB |
| Hardness Rating | 79.0 ROCKWELL A MINIMUM AND 85.0 ROCKWELL A MAXIMUM TEETH |
| Nominal Overall Length | 0.318 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | AMS 6260 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 3.3750 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Spline Quantity | 17 BOTH ENDS |
| Nominal Outside Diameter | 3.460 INCHES IN |
| Pressure Angle | 22.5000 DEGREES |
| Material | STEEL COMP E9310 OVERALL |
| Spline Pitch Diameter | 0.5312 INCHES NOMINAL BOTH ENDS IN |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.180 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 461381 PRIMARY | Rtx Corporation Div Pratt & Whitney (USA) |
| 461381 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 461381 | 5/9 Secondary reference Arrow Gear Llc |
| 461381 | 5/9 Secondary reference Gear-Ox Corp |
| 461381 | 5/9 Secondary reference Bmt Aerospace Usa, Inc. |
NSN 3020-00-981-9228 is a Gear,spur, manufactured by Rtx Corporation Div Pratt & Whitney, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-981-9228 has 2 manufacturer part numbers on file: 461381 (Rtx Corporation Div Pratt & Whitney), 461381 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
1 possible match (shared part number, not a government interchangeability claim): 5995-01-476-2006. Verify interchangeability with system specifications before substitution.
Key specifications for 461381: Bore Nominal Diameter: 0.549 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.120 INCHES BOTH ENDS IN; Teeth Quantity: 54; Body Style: WEBBED, OFFSET, WITH LIGHTENING HOLES. 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.
NSN 3020-00-981-9228 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.