The Link,tension, cataloged under National Stock Number 1680-00-939-0423, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Northrop Grumman Systems Corporation. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 1680-00-939-0423 |
| Primary Part Number | 123BM40389-7 |
| Item Name | Link,tension |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| General Characteristics Item Description | C/O ONE LINK,STEEL,AMS 6359,COMP 4340,10.875 IN. LG,0.312 IN. THK,THREE HOLES 0.5625 IN. MIN 0.5645 IN. MAX DIA,P/N 1236M40389-5; ONE RIVET,P/N MS20615-4M9; TWO PINS,P/N 50921C9T9L10F IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 123BM40389-7 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 123BM40389-7 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 1680-00-939-0423 is a Link,tension, manufactured by Northrop Grumman Systems Corporation, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-00-939-0423 has 1 manufacturer part number on file: 123BM40389-7 (Northrop Grumman Systems Corporation).
Key specifications for 123BM40389-7: General Characteristics Item Description: C/O ONE LINK,STEEL,AMS 6359,COMP 4340,10.875 IN. LG,0.312 IN. THK,THREE HOLES 0.5625 IN. MIN 0.5645 IN. MAX DIA,P/N 1236M40389-5; ONE RIVET,P/N MS20615-4M9; TWO PINS,P/N 50921C9T9L10F 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.
NSN 1680-00-939-0423 has DEMIL Code B. 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.