The Support,air Inlet, cataloged under National Stock Number 3040-01-031-3331, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-031-3331 |
| Primary Part Number | 21527-00 |
| Item Name | Support,air Inlet |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West |
| Status | ACTIVE |
| General Characteristics Item Description | 6.730 OVERALL LENGTH,6.250 EFFECTIVE LENGTH,1 HOLE THREADED,5/16-32 NEF-2B |
| 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 |
|---|---|
| 21527-00 PRIMARY | L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West (USA) |
| Reference | Meaning |
|---|---|
| 21527 | D/9 Drawing number reference only L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West |
NSN 3040-01-031-3331 is a Support,air Inlet, manufactured by L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-031-3331 has 1 manufacturer part number on file: 21527-00 (L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West).
3 possible matches (shared part number, not a government interchangeability claim): 6145-01-093-2556, 5310-01-146-1705, 1650-01-507-2400. Verify interchangeability with system specifications before substitution.
Key specifications for 21527-00: General Characteristics Item Description: 6.730 OVERALL LENGTH,6.250 EFFECTIVE LENGTH,1 HOLE THREADED,5/16-32 NEF-2B; End Item Identification: S-3A AIRCRAFT A. 1 specification is 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.