The Pin,tapered,plain, cataloged under National Stock Number 5315-01-290-8873, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is Timken Gears & Services Inc. Div Philadelphia Gear. Government technical data includes 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5315-01-290-8873 |
| Primary Part Number | 4051G25 |
| Item Name | Pin,tapered,plain |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Timken Gears & Services Inc. Div Philadelphia Gear |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES OUTSIDE DIAMETER |
| First End Location | LONG END |
| First End Style | OVAL |
| Material Document and Classification | AISI ASSN STD 1ST MATERIAL RESPONSE OR AISI ASSN STD 2ND MATERIAL RESPONSE OR AISI ASSN STD 3RD MATERIAL RESPONSE OR B5F4H,CAGEC 03502 MFR REF 4TH MATERIAL RESPONSE OVERALL |
| Pin Overall Length | 1.009 INCHES MINIMUM AND 1.149 INCHES MAXIMUM IN |
| Second End Relationship with First End | NOT IDENTICAL |
| Pin Size Designation | 12 |
| Second End Style | SQUARE |
| Material | STEEL COMP 4140 OR STEEL COMP 4142 OR STEEL COMP 4145 OR STEEL OVERALL |
| First End Outer Radius | 1.020 INCHES NOMINAL IN |
| 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 |
|---|---|
| 4051G25 | Timken Gears & Services Inc. Div Philadelphia Gear (USA) |
| Reference | Meaning |
|---|---|
| 6671010-048 | 3/9 Design control — primary reference General Electric Co Naval and Drive Turbine Systems Dept |
| 4051G25 | 5/9 Secondary reference General Electric Company |
| 6671010-048 | 5/9 Secondary reference General Electric Company |
NSN 5315-01-290-8873 is a Pin,tapered,plain, manufactured by Timken Gears & Services Inc. Div Philadelphia Gear, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-290-8873 has 1 manufacturer part number on file: 4051G25 (Timken Gears & Services Inc. Div Philadelphia Gear).
Key specifications for 4051G25: Surface Finish: 32.0 MICROINCHES OUTSIDE DIAMETER; First End Location: LONG END; First End Style: OVAL; Material Document and Classification: AISI ASSN STD 1ST MATERIAL RESPONSE OR AISI ASSN STD 2ND MATERIAL RESPONSE OR AISI ASSN STD 3RD MATERIAL RESPONSE OR B5F4H,CAGEC 03502 MFR REF 4TH MATERIAL RESPONSE OVERALL. 10 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.