The Gear Cluster, cataloged under National Stock Number 3020-00-756-2014, 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 Astec Industries Inc Div Astec Ind.. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-756-2014 |
| Primary Part Number | A18-995 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Astec Industries Inc Div Astec Ind. |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 EXTERNALLY LUBRICATED BEARING |
| Bore Nominal Diameter | 3.005 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 3.875 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Design Type | SPUR SECOND GEAR |
| Design Type | SPUR FIRST GEAR |
| Bore Style | PLAIN BOTH ENDS |
| Hardness Rating | 55.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM TEETH |
| Nominal Overall Length | 5.312 INCHES IN |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Hub Style Designator | PLAIN BETWEEN FIRST AND SECOND GEAR |
| Hub Nominal Length | 0.312 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Nominal Outside Diameter | 4.7500 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 6.6190 INCHES FIRST GEAR IN |
| Material | STEEL COMP 8642 OVERALL |
| Construction | SOLID |
| 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 |
|---|---|
| A18-995 PRIMARY | Astec Industries Inc Div Astec Ind. (USA) |
| Reference | Meaning |
|---|---|
| A18-995 | 5/9 Secondary reference Barber-Greene Co |
| A18-995 | C/1 Advisory reference — outside the item-of-supply concept Minnpar, Llc Dba Minnpar |
| 18-995 | D/9 Drawing number reference only Barber-Greene Co |
NSN 3020-00-756-2014 is a Gear Cluster, manufactured by Astec Industries Inc Div Astec Ind., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-756-2014 has 1 manufacturer part number on file: A18-995 (Astec Industries Inc Div Astec Ind.).
6 possible matches (shared part number, not a government interchangeability claim): 4730-00-933-9867, 5355-01-101-4591, 5306-01-185-4576. Verify interchangeability with system specifications before substitution.
Key specifications for A18-995: Furnished Items and Quantity: 1 EXTERNALLY LUBRICATED BEARING; Bore Nominal Diameter: 3.005 INCHES BOTH ENDS IN; Hub Nominal Diameter: 3.875 INCHES BETWEEN FIRST AND SECOND GEAR IN; Design Type: SPUR SECOND GEAR. 15 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.