The Key,machine, cataloged under National Stock Number 5315-01-265-1255, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 13 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5315-01-265-1255 |
| Primary Part Number | 243-5864871 20004 |
| Item Name | Key,machine |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Key Chamfer Angle | 45.0 DEGREES NOMINAL |
| Mounting Hole Type and Quantity | 1 PLAIN AND 2 THREADED |
| Starting Edge Shape | CHAMFERED |
| Style Designator | OCTAGON SHAPE |
| Material Document and Classification | MIL-S-24093,TY 1 OR TY 2,CL C MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Mounting Hole Diameter | 0.999 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| Distance From Mounting Hole Center to End | 2.500 INCHES NOMINAL IN |
| Mounting Hole Thread Class | 3B |
| Key Chamfer Length | 0.406 INCHES NOMINAL IN |
| Mounting Hole Nominal Thread Size | 0.750 INCHES IN |
| Mounting Hole Depth | 2.500 INCHES NOMINAL IN |
| Material | STEEL COMP E4340 OR STEEL COMP 4147 OVERALL |
| Mounting Hole Thread Series Designator | 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 |
|---|---|
| 243-5864871 20004 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| LHD243004-0004 | 5/9 Secondary reference National Forge Company |
| 243-5864871 FIND 20004 | 5/9 Secondary reference Naval Sea Systems Command |
| LHD243004-PC 10004 | C/1 Advisory reference — outside the item-of-supply concept National Forge Company |
NSN 5315-01-265-1255 is a Key,machine, manufactured by Naval Sea Systems Command, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-265-1255 has 1 manufacturer part number on file: 243-5864871 20004 (Naval Sea Systems Command).
Key specifications for 243-5864871 20004: Overall Height: 2.500 INCHES NOMINAL IN; Key Chamfer Angle: 45.0 DEGREES NOMINAL; Mounting Hole Type and Quantity: 1 PLAIN AND 2 THREADED; Starting Edge Shape: CHAMFERED. 13 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.