The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-268-2749, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Hunt Valve Company, Inc.. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-268-2749 |
| Primary Part Number | A50572MFV |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Hunt Valve Company, Inc. |
| Status | ACTIVE |
| First Step Diameter | 3.5000 INCHES NOMINAL IN |
| End Diameter | 2.3850 INCHES MINIMUM AND 2.4000 INCHES MAXIMUM IN |
| Distance From End to First Step | 0.2800 INCHES NOMINAL IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE |
| Spherical Seat Top Radius | 1.5000 INCHES NOMINAL IN |
| Bore Diameter | 0.6400 INCHES NOMINAL IN |
| Material | NICKEL 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 |
|---|---|
| A50572MFV PRIMARY | Hunt Valve Company, Inc. (USA) |
| D50522 ITEM 8 | Hunt Valve Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| A50572MFV | 3/9 Design control — primary reference Hunt Valve Company Inc Dba Union Flonetics |
| D50522 ITEM 8 | 5/9 Secondary reference Hunt Valve Company Inc Dba Union Flonetics |
NSN 5340-01-268-2749 is a Seat,helical Compression Spring, manufactured by Hunt Valve Company, Inc., classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-268-2749 has 2 manufacturer part numbers on file: A50572MFV (Hunt Valve Company, Inc.), D50522 ITEM 8 (Hunt Valve Company, Inc.).
Key specifications for A50572MFV: Overall Height: 0.7200 INCHES NOMINAL IN; First Step Diameter: 3.5000 INCHES NOMINAL IN; End Diameter: 2.3850 INCHES MINIMUM AND 2.4000 INCHES MAXIMUM IN; Distance From End to First Step: 0.2800 INCHES NOMINAL IN. 9 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.