The Plunger,spring, cataloged under National Stock Number 3040-01-645-0445, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 3040-01-645-0445 |
| Primary Part Number | 3403A13 |
| Item Name | Plunger,spring |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service |
| Status | ACTIVE |
| Supplementary Features | THREADS PER INCH - 16; THREAD CLASS - 2A A |
| Thread Size and Series/type Designator | 0.375 UNIFIED NATIONAL COARSE (UNC) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 3403A13 | Mcmaster-Carr Supply Co (USA) |
| 3403A13 PRIMARY | Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service (USA) |
| Reference | Meaning |
|---|---|
| 09024B5140 FIND ITEM NO.24 | C/1 Advisory reference — outside the item-of-supply concept Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service |
| 09024B5140 | D/9 Drawing number reference only Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service |
NSN 3040-01-645-0445 is a Plunger,spring, manufactured by Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-645-0445 has 2 manufacturer part numbers on file: 3403A13 (Mcmaster-Carr Supply Co), 3403A13 (Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service).
Key specifications for 3403A13: Supplementary Features: THREADS PER INCH - 16; THREAD CLASS - 2A A; End Item Identification: NIIN 015928791 COMMUNICATION SYSTEM; Thread Size and Series/type Designator: 0.375 UNIFIED NATIONAL COARSE (UNC). 2 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.