The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-140-0386, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Argo Turboserve Corporation Div Argo Turboserve Corp.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5340-01-140-0386 |
| Primary Part Number | R138864 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Argo Turboserve Corporation Div Argo Turboserve Corp. |
| Status | ACTIVE |
| 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 |
|---|---|
| R138864 | Argo Turboserve Corporation Div Argo Turboserve Corp. (USA) |
| Reference | Meaning |
|---|---|
| 541802 PIECE 73 | 5/9 Secondary reference U.S. Government activity |
| 18864 | 5/9 Secondary reference U.S. Government activity |
| R138864 | 5/9 Secondary reference Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand |
| 138864 | 3/9 Design control — primary reference Rosemount Analytical, Inc. Div Process Analytical Division |
| R138864 | 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 |
| 138864 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 5340-01-140-0386 is a Seat,helical Compression Spring, manufactured by Argo Turboserve Corporation Div Argo Turboserve Corp., classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-140-0386 has 1 manufacturer part number on file: R138864 (Argo Turboserve Corporation Div Argo Turboserve Corp.).
2 possible matches (shared part number, not a government interchangeability claim): 2990-01-516-9572, 5110-01-632-6226. Verify interchangeability with system specifications before substitution.
Key specifications for R138864: Part Name Assigned by Controlling Agency: SPRING SEAT. 0 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.