The Plunger,detent, cataloged under National Stock Number 5340-01-498-9500, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-498-9500 |
| Primary Part Number | 3408-A4 |
| Item Name | Plunger,detent |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Length | 0.566 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Diameter | 0.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| 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 |
|---|---|
| 3408-A4 | Mcmaster-Carr Supply Co (USA) |
| 3408A98 | Japan Marine Engineering Company Atf Donald O'connor Family Trust (AUS) |
| 752-7068491-19 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 3408A98 | 5/1 Secondary reference Mcmaster-Carr Supply Co |
| H832-1680-19 | 3/2 Design control — primary reference U.S. Government activity |
| 7068491 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5340-01-498-9500 is a Plunger,detent, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-498-9500 has 3 manufacturer part numbers on file: 3408-A4 (Mcmaster-Carr Supply Co), 3408A98 (Japan Marine Engineering Company Atf Donald O'connor Family Trust), 752-7068491-19 (Naval Sea Systems Command).
Key specifications for 3408-A4: Length: 0.566 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN; Diameter: 0.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN; Special Features: LENGTH OF STAINLESS STEEL BALL FROM END OF PLUNGER BODY IS 0.035 IN, PART OF THE OVERALL LENGTH NAMED IN MRC ABRY;THREAD LENGTH IS 20 THREADS PER INCH IN; Material: STEEL CORROSION RESISTING OVERALL. 3 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.