The Fitting,radome Lock, cataloged under National Stock Number 1560-00-021-7939, is classified within Federal Supply Class 1560 (Airframe Structural Components) of the Aircraft and Airframe Components group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1560-00-021-7939 |
| Primary Part Number | 53-39020-3 |
| Item Name | Fitting,radome Lock |
| FSC / FSG | 1560 / 15 — Airframe Structural Components |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY,QQ-A-367,3.780 IN. LG,2.300 IN. W,1.670 IN. H IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 53-39020-3 | Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company (USA) |
| 53-39020-3 | Airborne Technologies, Inc. (USA) |
| 53-39020-3 | Kitco Llc (USA) |
| 53-39020-3 PRIMARY | The Boeing Company Div Defense (USA) |
NSN 1560-00-021-7939 is a Fitting,radome Lock, manufactured by The Boeing Company Div Defense, classified under FSC 1560, Airframe Structural Components. Status: active.
NSN 1560-00-021-7939 has 4 manufacturer part numbers on file: 53-39020-3 (Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company), 53-39020-3 (Airborne Technologies, Inc.), 53-39020-3 (Kitco Llc), 53-39020-3 (The Boeing Company Div Defense).
Key specifications for 53-39020-3: General Characteristics Item Description: ALUMINUM ALLOY,QQ-A-367,3.780 IN. LG,2.300 IN. W,1.670 IN. H IN. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1560-00-021-7939 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.