The Automatic Ripcord Release, cataloged under National Stock Number 1670-01-515-4311, 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 L. J. Engineering Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1670-01-515-4311 |
| Primary Part Number | 451-600 |
| Item Name | Automatic Ripcord Release |
| FSC / FSG | 1670 / 16 — Parachutes; Aerial Pick up, Delivery, Recovery Systems; and Cargo Tie Down Equipment |
| Manufacturer | L. J. Engineering Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| 451-600 PRIMARY | L. J. Engineering Inc (USA) |
NSN 1670-01-515-4311 is a Automatic Ripcord Release, manufactured by L. J. Engineering Inc, classified under FSC 1670, Parachutes; Aerial Pick up, Delivery, Recovery Systems; and Cargo Tie Down Equipment. Status: active.
NSN 1670-01-515-4311 has 1 manufacturer part number on file: 451-600 (L. J. Engineering Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5310-01-625-6861, 1005-01-653-2882. Verify interchangeability with system specifications before substitution.
Key specifications for 451-600: Overall Height: 1.700 INCHES NOMINAL IN; Overall Length: 5.200 INCHES NOMINAL IN; Overall Width: 3.100 INCHES NOMINAL IN; Special Features: WATERPROOF; FOR FREE-FALL JUMPS INTO WATER; PROVIDES RESISTANCE TO WATER AT DEPTHS UP TO 10 FT; REPLACEABLE, AIR-PERMEABLE, WATER-RESISTANT FILTER FOR ACCURATE AIR PRESSURE SENSING AND PREVENTS WATER FROM ENTERING ITEM; OPERATING ALTITUDE GROUND LEVEL TO 50,000 FT. ABOVE MEAN SEA LEVEL; OPERATING TEMPERATURE -51 TO 71 DEGREES C FT. 0 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 1670-01-515-4311 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.