The Pin,grooved,headless, cataloged under National Stock Number 5315-01-593-6304, 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 14 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5315-01-593-6304 |
| Primary Part Number | 721-8217291-18 |
| Item Name | Pin,grooved,headless |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| First End Taper Length | 0.060 INCHES NOMINAL IN |
| First End Location | OPPOSITE GROOVED END |
| Second End Taper Angle | 45.0 DEGREES NOMINAL |
| First End Style | CHAMFERED |
| Style Designator | ONE QUARTER GROOVE |
| Pin Large End Diameter | 0.375 INCHES NOMINAL IN |
| Second End Taper Length | 0.060 INCHES NOMINAL IN |
| First End Taper Angle | 45.0 DEGREES NOMINAL |
| Second End Relationship with First End | NOT IDENTICAL |
| Pin Small End Diameter | 0.375 INCHES NOMINAL IN |
| Second End Counterbore Diameter | 0.100 INCHES NOMINAL IN |
| Second End Style | CHAMFERED AND COUNTERBORED |
| Material | PLASTIC POLYHEXAMETHYLENE AMIDE OVERALL |
| Second End Counterbore Depth | 0.100 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 |
|---|---|
| 721-8217291-18 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| H861-6130-18 | 5/2 Secondary reference U.S. Government activity |
| 741-8217287-83 | 5/1 Secondary reference Naval Sea Systems Command |
| H861-6000-83 | 5/1 Secondary reference U.S. Government activity |
NSN 5315-01-593-6304 is a Pin,grooved,headless, manufactured by Naval Sea Systems Command, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-593-6304 has 1 manufacturer part number on file: 721-8217291-18 (Naval Sea Systems Command).
Key specifications for 721-8217291-18: First End Taper Length: 0.060 INCHES NOMINAL IN; First End Location: OPPOSITE GROOVED END; Second End Taper Angle: 45.0 DEGREES NOMINAL; First End Style: CHAMFERED. 14 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.