The Delay Element Mk 21 Mod 1, cataloged under National Stock Number 1350-01-234-8558, is classified within Federal Supply Class 1350 (Underwater Mine and Components, Inert) of the Ammunition and Explosives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 5 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1350-01-234-8558 |
| Primary Part Number | 5479681 |
| Item Name | Delay Element Mk 21 Mod 1 |
| FSC / FSG | 1350 / 13 — Underwater Mine and Components, Inert |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Package Nominal Overall Height and Type | 3.00 INCHES SHIPPING CONTAINER IN |
| Package Nominal Overall Width and Type | 5.00 INCHES SHIPPING CONTAINER IN |
| General Characteristics Item Description | O/A 2.875 IN.LG; 3.500 IN. W; 1.500 IN.H; 6.00 LB.WT; USED ON TAIL SECTION MK 7 MOD 1 F/MINE MK 65 LBS |
| Package Nominal Overall Length and Type | 10.00 INCHES SHIPPING CONTAINER IN |
| Gross Weight | 12.5 SHIPPING CONTAINER POUNDS |
| 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 |
|---|---|
| 5479681 PRIMARY | Naval Sea Systems Command (USA) |
NSN 1350-01-234-8558 is a Delay Element Mk 21 Mod 1, manufactured by Naval Sea Systems Command, classified under FSC 1350, Underwater Mine and Components, Inert. Status: active.
NSN 1350-01-234-8558 has 1 manufacturer part number on file: 5479681 (Naval Sea Systems Command).
Key specifications for 5479681: Package Nominal Overall Height and Type: 3.00 INCHES SHIPPING CONTAINER IN; Package Nominal Overall Width and Type: 5.00 INCHES SHIPPING CONTAINER IN; General Characteristics Item Description: O/A 2.875 IN.LG; 3.500 IN. W; 1.500 IN.H; 6.00 LB.WT; USED ON TAIL SECTION MK 7 MOD 1 F/MINE MK 65 LBS; Package Nominal Overall Length and Type: 10.00 INCHES SHIPPING CONTAINER IN. 5 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 1350-01-234-8558 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.