The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-193-2123, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5340-01-193-2123 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| First Step Diameter | 0.6250 INCHES NOMINAL IN |
| End Diameter | 0.3740 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN |
| Second End Diameter | 0.4690 INCHES NOMINAL IN |
| Distance From End to First Step | 0.2500 INCHES NOMINAL IN |
| Design Type | SOLID |
| Material Document and Classification | ASTM A108, GRADE 1018 ASSN STD SINGLE MATERIAL RESPONSE |
| First Step Length | 0.1250 INCHES NOMINAL IN |
| Material | STEEL COMP 1018 |
| 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 |
| Reference | Meaning |
|---|---|
| LA91230 | 5/9 Secondary reference U.S. Government activity |
| 121301-12.29 | 5/9 Secondary reference Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand |
| 121301-12.29 | 5/9 Secondary reference U.S. Government activity |
| LA91230 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| 121301-12.29 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| LA-91230 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| LA91230 | 3/9 Design control — primary reference Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand |
NSN 5340-01-193-2123 is a Seat,helical Compression Spring, classified under FSC 5340, Hardware, Commercial. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5935-01-193-2132. Verify interchangeability with system specifications before substitution.
Key specifications for 5340-01-193-2123: Overall Height: 0.6250 INCHES NOMINAL IN; First Step Diameter: 0.6250 INCHES NOMINAL IN; End Diameter: 0.3740 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN; Second End Diameter: 0.4690 INCHES NOMINAL IN. 8 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.