The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-100-2487, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Hatz Diesel of America Inc. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-100-2487 |
| Primary Part Number | 03043402 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Hatz Diesel of America Inc |
| Status | ACTIVE |
| Countersink Angle in Deg | 9.5 |
| First Step Diameter | 27.800 MILLIMETERS MINIMUM AND 28.000 MILLIMETERS MAXIMUM MM |
| End Diameter | 20.2 MILLIMETERS MINIMUM AND 20.4 MILLIMETERS MAXIMUM MM |
| Countersink Diameter | 25.000 MILLIMETERS NOMINAL MM |
| Distance From End to First Step | 4.8 MILLIMETERS MINIMUM AND 5.2 MILLIMETERS MAXIMUM MM |
| Design Type | SOLID |
| Features Provided | CASEHARDENED |
| Second Step Diameter | 36.000 MILLIMETERS NOMINAL MM |
| First Step Length | 3.000 MILLIMETERS NOMINAL MM |
| Bore Diameter | 13.000 MILLIMETERS MINIMUM AND 13.100 MILLIMETERS MAXIMUM MM |
| Material | STEEL |
| 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 |
|---|---|
| 03043402 PRIMARY | Hatz Diesel of America Inc (USA) |
| Reference | Meaning |
|---|---|
| 030 434 02 | C/1 Advisory reference — outside the item-of-supply concept Partz Network Llc, John J. Melton, Robert Melton, Christpher Robles, Richard Melton, Christine Hunsecker |
| 82157 | C/1 Advisory reference — outside the item-of-supply concept Drs Environmental Systems Inc |
| 82157 | 5/9 Secondary reference Davey Compressor Co Div of Keco Industries Inc |
NSN 5340-01-100-2487 is a Seat,helical Compression Spring, manufactured by Hatz Diesel of America Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-100-2487 has 1 manufacturer part number on file: 03043402 (Hatz Diesel of America Inc).
1 possible match (shared part number, not a government interchangeability claim): 4930-01-120-6796. Verify interchangeability with system specifications before substitution.
Key specifications for 03043402: Overall Height: 10.800 MILLIMETERS MINIMUM AND 11.200 MILLIMETERS MAXIMUM MM; Countersink Angle in Deg: 9.5; First Step Diameter: 27.800 MILLIMETERS MINIMUM AND 28.000 MILLIMETERS MAXIMUM MM; End Diameter: 20.2 MILLIMETERS MINIMUM AND 20.4 MILLIMETERS MAXIMUM MM. 11 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.