The Gear Sector,spur, cataloged under National Stock Number 3020-00-776-7310, 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 Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 22 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-776-7310 |
| Primary Part Number | 6701270 |
| Item Name | Gear Sector,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| Keyway Nominal Width | 0.126 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 0.625 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.9380 INCHES FIRST END IN |
| Teeth Quantity | 40 |
| Nominal Outside Radius | 2.5705 INCHES IN |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Mounting Hole Type and Quantity | 1 COUNTERSUNK AXIALLY THROUGH HUB FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.2190 INCHES FIRST END IN |
| Mounting Hole Nominal Diameter | 0.330 INCHES AXIALLY THROUGH HUB FIRST END IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Overall Length | 0.750 INCHES IN |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | MIL-S-13048 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Arc Nominal Length | 2.9530 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.374 INCHES BOTH ENDS IN |
| Pitch Radius | 2.5000 INCHES NOMINAL IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | STEEL OVERALL |
| Attachment Method | MOUNTING HOLE AND SLOT |
| Face Nominal Width | 0.562 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 3020-00-776-7310 is a Gear Sector,spur, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-776-7310 has 2 manufacturer part numbers on file: 7767310 (U S Army Tank Automotive Command Amsta-Im-Mm), 6701270 (Allison Transmission Inc Dba Allison Transmission, Inc).
Key specifications for 6701270: Keyway Nominal Width: 0.126 INCHES BOTH ENDS IN; Bore Nominal Diameter: 0.625 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.9380 INCHES FIRST END IN; Teeth Quantity: 40. 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.