The Hinge Block,breechblock, cataloged under National Stock Number 1015-01-413-2522, is classified within Federal Supply Class 1015 (Guns, 75mm Through 125mm) of the Weapons group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 1015-01-413-2522 |
| Primary Part Number | 595-6401676-1 |
| Item Name | Hinge Block,breechblock |
| FSC / FSG | 1015 / 10 — Guns, 75mm Through 125mm |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| General Characteristics Item Description | TITANIUM ALLOY PER ASTM B348 GR5 |
| Surface Treatment | ANODIZE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 211053229 | Naval Sea Systems Command (USA) |
| 595-6401676-1 PRIMARY | Naval Sea Systems Command (USA) |
| 595-6401267 ITEM 183 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6401676 | D/9 Drawing number reference only Naval Sea Systems Command |
| 6401267 | D/9 Drawing number reference only Naval Sea Systems Command |
| 211080657 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 1015-01-413-2522 is a Hinge Block,breechblock, manufactured by Naval Sea Systems Command, classified under FSC 1015, Guns, 75mm Through 125mm. Status: active.
NSN 1015-01-413-2522 has 3 manufacturer part numbers on file: 211053229 (Naval Sea Systems Command), 595-6401676-1 (Naval Sea Systems Command), 595-6401267 ITEM 183 (Naval Sea Systems Command).
3 possible matches (shared part number, not a government interchangeability claim): 3040-01-428-3196, 3120-01-430-5298, 5305-01-445-3344. Verify interchangeability with system specifications before substitution.
Key specifications for 595-6401676-1: General Characteristics Item Description: TITANIUM ALLOY PER ASTM B348 GR5; Overall Length: 10.340 INCHES NOMINAL IN; Surface Treatment: ANODIZE; End Item Identification: BARREL ASSEMBLY,6401267-183;SEAWOLF CLASS SSN. 2 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 1015-01-413-2522 has DEMIL Code D. 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.