The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-00-004-1838, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Ontic Engineering & Manufacturing, Inc Dba Ontic Us. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5340-00-004-1838 |
| Primary Part Number | 2483560 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Ontic Engineering & Manufacturing, Inc Dba Ontic Us |
| Status | ACTIVE |
| Material Hardness Rating | 35.0 ROCKWELL C MINIMUM |
| Body Outside Diameter | 0.500 INCHES NOMINAL IN |
| Style Designator | PARALLEL |
| Material Document and Classification | AMS 5610 ASSN STD SINGLE MATERIAL RESPONSE |
| Inside Chamfer Depth | 0.030 INCHES MAXIMUM IN |
| Body Inside Diameter | 0.435 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Surface Treatment | PASSIVATE |
| Material | STEEL COMP 416SE |
| Outside Chamfer Depth | 0.050 INCHES NOMINAL IN |
| End Hole Diameter | 0.373 INCHES NOMINAL IN |
| 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 |
|---|---|
| 2483560 | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| Reference | Meaning |
|---|---|
| 2483560 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-00-004-1838 is a Retainer,helical Compression Spr, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-004-1838 has 1 manufacturer part number on file: 2483560 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
2 possible matches (shared part number, not a government interchangeability claim): 2540-00-192-9398, 5825-01-564-3742. Verify interchangeability with system specifications before substitution.
Key specifications for 2483560: Overall Height: 0.150 INCHES NOMINAL IN; Material Hardness Rating: 35.0 ROCKWELL C MINIMUM; Body Outside Diameter: 0.500 INCHES NOMINAL IN; Style Designator: PARALLEL. 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.