The Spider,hatch, cataloged under National Stock Number 2040-01-435-7978, is classified within Federal Supply Class 2040 (Marine Hardware and Hull Items) of the Ship and Marine Equipment group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 2040-01-435-7978 |
| Primary Part Number | W-256 PC17 |
| Item Name | Spider,hatch |
| FSC / FSG | 2040 / 20 — Marine Hardware and Hull Items |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| W-256 PC17 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| JE11712-001 | 3/2 Design control — primary reference U.S. Government activity |
| W-256PC17 | 5/9 Secondary reference Huntington Ingalls Incorporated Div Ingalls Shipbuilding |
NSN 2040-01-435-7978 is a Spider,hatch, manufactured by Naval Sea Systems Command, classified under FSC 2040, Marine Hardware and Hull Items. Status: active.
NSN 2040-01-435-7978 has 1 manufacturer part number on file: W-256 PC17 (Naval Sea Systems Command).
Key specifications for W-256 PC17: Special Features: MATERIAL: BRASS; End Item Identification: HATCH. 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.
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.