The Gear,spur, cataloged under National Stock Number 3020-00-005-7502, 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 Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. Government technical data includes 13 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 | 3020-00-005-7502 |
| Primary Part Number | B5148F |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic |
| Status | ACTIVE |
| Teeth Quantity | 42 |
| Body Style | PLAIN, SOLID |
| Nominal Distance Between Body Face and Protruding Hub End | 1.6875 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.5937 INCHES SECOND END IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | 66,AISI/SAE 8620H FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 5.1250 INCHES NOMINAL IN |
| Spline Quantity | 68 BOTH ENDS |
| End Nominal Length | 0.250 INCHES SECOND END IN |
| Nominal Outside Diameter | 5.4375 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 0.875 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 3020-00-005-7502 is a Gear,spur, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-005-7502 has 2 manufacturer part numbers on file: B5148F (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), 5199281 (Rolls-Royce Solutions America Inc).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-373-0352. Verify interchangeability with system specifications before substitution.
Key specifications for B5148F: Teeth Quantity: 42; Body Style: PLAIN, SOLID; Nominal Distance Between Body Face and Protruding Hub End: 1.6875 INCHES FIRST END IN; Nominal Distance Between Body Face and Protruding Hub End: 0.5937 INCHES SECOND END IN. 13 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.