The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-495-0427, 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. Government technical data includes 4 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-495-0427 |
| Primary Part Number | D1234-946 ITEM 24CPCP |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Style Designator | SEAT |
| Material | COPPER ALLOY |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING AND MARKING IAW MIL-STD-1330D |
| 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 |
|---|---|
| D1234-946 ITEM 24CPCP | Naval Inventory Control Point Mechanicsburg (USA) |
| B3423CPCP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| B3423CP | 3/1 Design control — primary reference Dante Valve Company |
| B3423CP | 3/9 Design control — primary reference Danco Valve Company |
| D1234-946 ITEM 24CP | 5/9 Secondary reference Danco Valve Company |
| B3423CP | 5/1 Secondary reference Dante Valve Company |
| D1234-946 ITEM 24CP | 5/1 Secondary reference Dante Valve Company |
NSN 5340-01-495-0427 is a Seat,helical Compression Spring, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-495-0427 has 2 manufacturer part numbers on file: D1234-946 ITEM 24CPCP (Naval Inventory Control Point Mechanicsburg), B3423CPCP (Naval Inventory Control Point Mechanicsburg).
Key specifications for D1234-946 ITEM 24CPCP: Criticality Code Justification: ZZZY; Style Designator: SEAT; Special Features: NAVY SPECIAL MATERIAL INDICATOR CODE FOR OXYGEN/NITROGEN SERVICE; Part Name Assigned by Controlling Agency: SPRING WASHER. 4 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.