The Support Arm, cataloged under National Stock Number 1270-00-339-5445, is classified within Federal Supply Class 1270 (Aircraft Gunnery Fire Control Components) of the Fire Control Equipment group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1270-00-339-5445 |
| Primary Part Number | J21P0003-6 |
| Item Name | Support Arm |
| FSC / FSG | 1270 / 12 — Aircraft Gunnery Fire Control Components |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| FSC Application Data | AIRBORNE INERTIAL NAVIGATION SYSTEM |
| General Characteristics Item Description | 6.270 IN. LG,5.700 IN. W,0.629 IN. THK IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| J21P0003-6 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| J21P0003-6 | 5/9 Secondary reference Comptech |
NSN 1270-00-339-5445 is a Support Arm, manufactured by The Boeing Company Div Defense, classified under FSC 1270, Aircraft Gunnery Fire Control Components. Status: active.
NSN 1270-00-339-5445 has 1 manufacturer part number on file: J21P0003-6 (The Boeing Company Div Defense).
Key specifications for J21P0003-6: FSC Application Data: AIRBORNE INERTIAL NAVIGATION SYSTEM; General Characteristics Item Description: 6.270 IN. LG,5.700 IN. W,0.629 IN. THK IN; End Item Identification: P/NA05A0204-5,FSCM 12464. 2 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.
NSN 1270-00-339-5445 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.