The Block Assembly,upper-Aft Chamber, cataloged under National Stock Number 1090-01-317-0734, is classified within Federal Supply Class 1090 (Assemblies Interchangeable Between Weapons in Two or More Classes) of the Weapons 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1090-01-317-0734 |
| Primary Part Number | A51K10602-3 |
| Item Name | Block Assembly,upper-Aft Chamber |
| FSC / FSG | 1090 / 10 — Assemblies Interchangeable Between Weapons in Two or More Classes |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| General Characteristics Item Description | 0.625 IN. W; 1.156 IN. H; 125 MICROINCH FINISH ON ALL SURFACES AND 200 MICROINCH FINISH ON ALL HOLES 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 |
|---|---|
| A51K10602-3 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| A51K10602-3 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| A51K10602-3 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
NSN 1090-01-317-0734 is a Block Assembly,upper-Aft Chamber, manufactured by Northrop Grumman Systems Corporation, classified under FSC 1090, Assemblies Interchangeable Between Weapons in Two or More Classes. Status: active.
NSN 1090-01-317-0734 has 1 manufacturer part number on file: A51K10602-3 (Northrop Grumman Systems Corporation).
Key specifications for A51K10602-3: General Characteristics Item Description: 0.625 IN. W; 1.156 IN. H; 125 MICROINCH FINISH ON ALL SURFACES AND 200 MICROINCH FINISH ON ALL HOLES 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 1090-01-317-0734 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.