The Sustainer Section,guided Missile, cataloged under National Stock Number 1337-01-272-2363, is classified within Federal Supply Class 1337 (Guided Missile and Space Vehicle Explosive Propulsion Units, Solid Fuel; and Components) of the Ammunition and Explosives group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1337-01-272-2363 |
| Primary Part Number | 1657AS0521-4 |
| Item Name | Sustainer Section,guided Missile |
| FSC / FSG | 1337 / 13 — Guided Missile and Space Vehicle Explosive Propulsion Units, Solid Fuel; and Components |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Model Number | A/B44G-1 GRAY |
| Package Nominal Overall Height and Type | 27.08 INCHES SHIPPING CONTAINER IN |
| Package Nominal Overall Width and Type | 23.63 INCHES SHIPPING CONTAINER IN |
| General Characteristics Item Description | HARPOON,GRAY,FUEL TANK ASSY 642AS0143,ENGINE INSTALLATION 642AS0237,FUEL SYSTEM INSTALLATION 642AS0220,START TANK INSTALLATION 642AS0196,OIL SEAL JP-10 FUEL 127.80 LBS,82.40 IN. LG.,13.50 IN. DIA.,PKG 1 PER MK621 MOD 0 S-S CNTR LBS |
| Dot Proper Shipping Name | FLAMMABLE LIQUIDS, N.O.S. |
| Dot Identification Number | UN1993 |
| Dot Registration Code | EX1993040300 |
| Package Nominal Overall Length and Type | 103.00 INCHES SHIPPING CONTAINER IN |
| Hazardous Material Classification Code | 3 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION |
| Unable to Decode | UNABLE TO DECODE |
| Gross Weight | 725.6 SHIPPING CONTAINER POUNDS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL G — Ammunition & Explosives |
| Hazard | No hazard code in the DLA record (HMIC N) UN ID UN1993 · 3 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION · ships as FLAMMABLE LIQUIDS, N.O.S. |
| Criticality Code | N |
| Part Number | Manufacturer |
|---|---|
| 1657AS0521-4 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| A/B44G-1 GRAY | 5/1 Secondary reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| AS2402 | 7/1 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 1337-01-272-2363 is a Sustainer Section,guided Missile, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 1337, Guided Missile and Space Vehicle Explosive Propulsion Units, Solid Fuel; and Components. Status: active.
NSN 1337-01-272-2363 has 1 manufacturer part number on file: 1657AS0521-4 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 1337-01-276-0423. Verify interchangeability with system specifications before substitution.
Key specifications for 1657AS0521-4: Model Number: A/B44G-1 GRAY; Package Nominal Overall Height and Type: 27.08 INCHES SHIPPING CONTAINER IN; Package Nominal Overall Width and Type: 23.63 INCHES SHIPPING CONTAINER IN; General Characteristics Item Description: HARPOON,GRAY,FUEL TANK ASSY 642AS0143,ENGINE INSTALLATION 642AS0237,FUEL SYSTEM INSTALLATION 642AS0220,START TANK INSTALLATION 642AS0196,OIL SEAL JP-10 FUEL 127.80 LBS,82.40 IN. LG.,13.50 IN. DIA.,PKG 1 PER MK621 MOD 0 S-S CNTR LBS. 11 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). The government record also carries hazard data: DOT hazard class, UN number, or related classification fields. Special handling, storage, and shipping requirements apply per the cited government fields.
NSN 1337-01-272-2363 has DEMIL Code G. 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.