The Pin,shoulder,headless, cataloged under National Stock Number 5315-01-515-5311, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 19 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 | 5315-01-515-5311 |
| Primary Part Number | MBEU148656 |
| Item Name | Pin,shoulder,headless |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Shank Diameter | 0.250 INCHES NOMINAL IN |
| First End Taper Length | 0.020 INCHES NOMINAL IN |
| First End Location | THREADED END |
| Second End Taper Angle | 45.0 DEGREES NOMINAL |
| Thread Length | 0.250 INCHES NOMINAL IN |
| First End Style | CHAMFERED |
| Shank Length | 0.250 INCHES NOMINAL IN |
| Style Designator | SHOULDER |
| Second End Taper Length | 0.030 INCHES NOMINAL IN |
| First End Taper Angle | 45.0 DEGREES NOMINAL |
| Second End Relationship with First End | NOT IDENTICAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Shoulder Diameter | 0.309 INCHES MINIMUM AND 0.311 INCHES MAXIMUM IN |
| Second End Style | CHAMFERED |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| MBEU148656 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| MBEU148656 | Martin-Baker Aircraft Company Limited (GBR) |
NSN 5315-01-515-5311 is a Pin,shoulder,headless, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-515-5311 has 2 manufacturer part numbers on file: MBEU148656 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), MBEU148656 (Martin-Baker Aircraft Company Limited).
Key specifications for MBEU148656: Shank Diameter: 0.250 INCHES NOMINAL IN; First End Taper Length: 0.020 INCHES NOMINAL IN; First End Location: THREADED END; Second End Taper Angle: 45.0 DEGREES NOMINAL. 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.