The Pin,shoulder,headless, cataloged under National Stock Number 5315-01-021-9320, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5315-01-021-9320 |
| Item Name | Pin,shoulder,headless |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Status | ACTIVE |
| Shank Diameter | 0.250 INCHES NOMINAL IN |
| Surface Finish | 125.000 MICROINCHES OVERALL |
| First End Taper Length | 0.500 INCHES NOMINAL IN |
| First End Location | CHAMFERED END |
| Thread Length | 0.390 INCHES NOMINAL IN |
| First End Style | CHAMFERED |
| Shank Length | 0.460 INCHES MINIMUM AND 0.540 INCHES MAXIMUM IN |
| Style Designator | SHOULDER |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| First End Taper Angle | 15.0 DEGREES NOMINAL |
| Second End Relationship with First End | NOT IDENTICAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Shoulder Diameter | 0.431 INCHES MINIMUM AND 0.433 INCHES MAXIMUM IN |
| First End Tip Radius | 0.093 INCHES NOMINAL IN |
| Second End Style | SQUARE |
| Thread Class | 3A A |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 18-12390-1 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| 18-12390-1 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
NSN 5315-01-021-9320 is a Pin,shoulder,headless, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
Key specifications for 5315-01-021-9320: Shank Diameter: 0.250 INCHES NOMINAL IN; Surface Finish: 125.000 MICROINCHES OVERALL; First End Taper Length: 0.500 INCHES NOMINAL IN; First End Location: CHAMFERED END. 19 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.