The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-633-6655, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 — Hardware, Commercial (FSG 53) |
| Manufacturers | Naval Inventory Control Point Mechanicsburg (CAGE 03950) |
| Parameter | Value |
|---|---|
| NSN | 5340-01-633-6655 |
| Primary Part Number | B47474-11-12D0 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | S |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| B47474-11-12D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| G547-0002-B47474-11-12D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| 7550478-B47474-11-12D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| B47474 ITEM 12D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| B47496-1D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| 7383858-B47474 ITEM 11-12D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| H547-0001-B47474 ITEM 11-12D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 7383858-B47474 ITEM 11-12 | 5/1 Secondary reference Naval Sea Systems Command |
| H547-0001-B47474 ITEM 11-12 | 5/1 Secondary reference U.S. Government activity |
| B47474 ITEM 12 | 5/1 Secondary reference Mission Systems Orchard Park Inc |
| B47496-1 | 5/1 Secondary reference Mission Systems Orchard Park Inc |
| 7550478-B47474-11-12 | 5/1 Secondary reference Naval Sea Systems Command |
| G547-0002-B47474-11-12 | 5/1 Secondary reference U.S. Government activity |
| B47474-11-12 | 3/1 Design control — primary reference Mission Systems Orchard Park Inc |
NSN 5340-01-633-6655 is a Seat,helical Compression Spring, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-633-6655 has 7 manufacturer part numbers on file: B47474-11-12D0 (Naval Inventory Control Point Mechanicsburg), G547-0002-B47474-11-12D0 (Naval Inventory Control Point Mechanicsburg), 7550478-B47474-11-12D0 (Naval Inventory Control Point Mechanicsburg), B47474 ITEM 12D0 (Naval Inventory Control Point Mechanicsburg), B47496-1D0 (Naval Inventory Control Point Mechanicsburg) and 2 more.
Possible hazard — SDS may be required (DLA HMIC P). 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.