The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-496-4135, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Dante Valve Company. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-496-4135 |
| Primary Part Number | D48-12-17 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Dante Valve Company |
| Status | ACTIVE |
| Design Type | SOLID |
| Style Designator | SEAT |
| Material | COPPER ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| D48-12-17 PRIMARY | Dante Valve Company (USA) |
| DL48121 ITEM 16 | Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris (USA) |
| Reference | Meaning |
|---|---|
| D48-12-17 | 3/9 Design control — primary reference Danco Valve Company |
NSN 5340-01-496-4135 is a Seat,helical Compression Spring, manufactured by Dante Valve Company, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-496-4135 has 2 manufacturer part numbers on file: D48-12-17 (Dante Valve Company), DL48121 ITEM 16 (Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris).
Key specifications for D48-12-17: Design Type: SOLID; Style Designator: SEAT; Part Name Assigned by Controlling Agency: SPRING WASHER; End Item Identification: USED IN A RELIEF VALVE. 3 specifications are documented in the U.S. Government catalog.
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.