The Weight,counterbalance, cataloged under National Stock Number 3040-01-163-6342, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Rolls-Royce Plc Div Defense (europe). 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-163-6342 |
| Primary Part Number | AS44521-030 |
| Item Name | Weight,counterbalance |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Rolls-Royce Plc Div Defense (europe) |
| Status | ACTIVE |
| 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 |
|---|---|
| AS44521-030 | Rolls-Royce Plc Div Defense (europe) (GBR) |
| Reference | Meaning |
|---|---|
| AS44521-030 | 5/9 Secondary reference Rolls-Royce Airlines |
| 2301009 | 3/9 Design control — primary reference Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
| AS44521-030 | C/1 Advisory reference — outside the item-of-supply concept Bsi Standards Limited |
NSN 3040-01-163-6342 is a Weight,counterbalance, manufactured by Rolls-Royce Plc Div Defense (europe), classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-163-6342 has 1 manufacturer part number on file: AS44521-030 (Rolls-Royce Plc Div Defense (europe)).
2 possible matches (shared part number, not a government interchangeability claim): 4920-01-246-5859, 5998-01-276-8153. Verify interchangeability with system specifications before substitution.
Key specifications for AS44521-030: End Item Identification: AIRCRAFT ENGINE MODEL F402RR406. 0 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.