The Pin,tapered,threaded, cataloged under National Stock Number 5315-01-554-3997, 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 18 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5315-01-554-3997 |
| Primary Part Number | 501-7627451 ITEM 002 |
| Item Name | Pin,tapered,threaded |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| First End Taper Length | 0.190 INCHES NOMINAL IN |
| First End Location | THREADED END |
| Hole Arrangement Style | ONE END DRILLED |
| Thread Length | 3.000 INCHES NOMINAL IN |
| First End Style | CHAMFERED |
| First Hole Diameter | 0.406 INCHES NOMINAL IN |
| Taper Minor Diameter | 1.120 INCHES NOMINAL IN |
| Style Designator | THREADED AT LARGE END |
| First End Taper Angle | 45.0 DEGREES NOMINAL |
| Taper Major Diameter | 2.250 INCHES NOMINAL IN |
| Second End Relationship with First End | NOT IDENTICAL |
| Nominal Thread Size | 2.250 INCHES IN |
| Taper Length | 11.500 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 5 |
| Material | STEEL COMP 1018 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Distance From Centerline of Hole to End of Pin | 0.500 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 |
|---|---|
| 2.25-4.5UNC-3AX14.50LSTEEL | Naval Sea Systems Command (USA) |
| 501-7627451 ITEM 002 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5315-01-554-3997 is a Pin,tapered,threaded, manufactured by Naval Sea Systems Command, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-554-3997 has 2 manufacturer part numbers on file: 2.25-4.5UNC-3AX14.50LSTEEL (Naval Sea Systems Command), 501-7627451 ITEM 002 (Naval Sea Systems Command).
Key specifications for 501-7627451 ITEM 002: First End Taper Length: 0.190 INCHES NOMINAL IN; First End Location: THREADED END; Hole Arrangement Style: ONE END DRILLED; Thread Length: 3.000 INCHES NOMINAL IN. 18 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.