The Link,locking Trigger, cataloged under National Stock Number 1670-00-738-4532, is classified within Federal Supply Class 1670 (Parachutes; Aerial Pick up, Delivery, Recovery Systems; and Cargo Tie Down Equipment) of the Aircraft Components and Accessories group. The manufacturer of record is Cpi Aerostructures Inc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1670-00-738-4532 |
| Primary Part Number | 4N21179-101A |
| Item Name | Link,locking Trigger |
| FSC / FSG | 1670 / 16 — Parachutes; Aerial Pick up, Delivery, Recovery Systems; and Cargo Tie Down Equipment |
| Manufacturer | Cpi Aerostructures Inc |
| Status | ACTIVE |
| General Characteristics Item Description | 10.375 IN. LG;0.625 IN. DIA 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 |
|---|---|
| 4N21179-101A | Cpi Aerostructures Inc (USA) |
| 4N21179-101A | Aero Components, Llc (USA) |
| 4N21179-101A | Aero Engineering & Manufacturing Company of California, Llc Dba Aeroengineering & Manufacturing Co (USA) |
| 4N21179-101A | Williams Aerospace & Manufacturing Inc (USA) |
| Reference | Meaning |
|---|---|
| 4N21179-101A | 3/2 Design control — primary reference U.S. Government activity |
| 4N21179-101A | 5/2 Secondary reference U.S. Government activity |
NSN 1670-00-738-4532 is a Link,locking Trigger, manufactured by Cpi Aerostructures Inc, classified under FSC 1670, Parachutes; Aerial Pick up, Delivery, Recovery Systems; and Cargo Tie Down Equipment. Status: active.
NSN 1670-00-738-4532 has 4 manufacturer part numbers on file: 4N21179-101A (Cpi Aerostructures Inc), 4N21179-101A (Aero Components, Llc), 4N21179-101A (Aero Engineering & Manufacturing Company of California, Llc Dba Aeroengineering & Manufacturing Co), 4N21179-101A (Williams Aerospace & Manufacturing Inc).
Key specifications for 4N21179-101A: General Characteristics Item Description: 10.375 IN. LG;0.625 IN. DIA IN; End Item Identification: P/N4N21200 NEXT ASSEMBLY,P/NMN0002A. 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 1670-00-738-4532 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.