The Tube Assembly,pin-Spring, cataloged under National Stock Number 5340-01-421-9489, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Oshkosh Defense Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-421-9489 |
| Primary Part Number | 3HD812 |
| Item Name | Tube Assembly,pin-Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Oshkosh Defense Llc |
| 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 |
|---|---|
| 3HD812 PRIMARY | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 3HD812 | 3/9 Design control — primary reference Oshkosh Corp |
| 12440863 | 5/9 Secondary reference Steeltech Mfg Inc |
NSN 5340-01-421-9489 is a Tube Assembly,pin-Spring, manufactured by Oshkosh Defense Llc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-421-9489 has 1 manufacturer part number on file: 3HD812 (Oshkosh Defense Llc).
Key specifications for 3HD812: Overall Length: 10.410 INCHES NOMINAL IN; Special Features: CONSISTS OF TUBE ASSEMBLY P/N 12440999, THRUST WASHER P/N 12440650, THREAD ACME NUT P/N 12440675, PRING SPRING RATCHET SMALL P/N 12440646, PING SPRING RATCHET LARGE P/N 12440647, O-RING P/N 12440956, EXPANSION PLUG P/N 12440639; End Item Identification: IPF FLATRACK, 2320-01-304-2277 PLS (PALLETIZED LOADING SYSTEM). 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.