The Cross Beam, cataloged under National Stock Number 1680-00-006-4376, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Martin-Baker Aircraft Company Limited. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-00-006-4376 |
| Primary Part Number | MB300-598 |
| Item Name | Cross Beam |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Martin-Baker Aircraft Company Limited |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY,ANODIZED,5.200 IN. LG,1.436 IN. W,1.436 IN. H IN |
| 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 |
|---|---|
| MB300-598 | Martin-Baker Aircraft Company Limited (GBR) |
| Reference | Meaning |
|---|---|
| MB300-598 | 3/9 Design control — primary reference Certified Couplings Inc |
NSN 1680-00-006-4376 is a Cross Beam, manufactured by Martin-Baker Aircraft Company Limited, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-00-006-4376 has 1 manufacturer part number on file: MB300-598 (Martin-Baker Aircraft Company Limited).
Key specifications for MB300-598: General Characteristics Item Description: ALUMINUM ALLOY,ANODIZED,5.200 IN. LG,1.436 IN. W,1.436 IN. H IN. 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.