The Pin,shoulder,headless, cataloged under National Stock Number 5315-01-191-0663, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5315-01-191-0663 |
| Primary Part Number | 75A321368-2001 |
| Item Name | Pin,shoulder,headless |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Shank Diameter | 0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Second Shank Diameter | 0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Surface Finish | 125.0 MICROINCHES OVERALL |
| First End Location | SQUARE END |
| Second End Taper Angle | 0.45 RADIANS MINIMUM AND 0.75 RADIANS MAXIMUM |
| First End Style | SQUARE |
| Shank Length | 0.144 INCHES NOMINAL IN |
| Style Designator | SHOULDER |
| Material Document and Classification | MIL-T-9047 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Second End Taper Length | 0.248 INCHES NOMINAL IN |
| Second End Relationship with First End | NOT IDENTICAL |
| Shoulder Diameter | 1.400 INCHES NOMINAL IN |
| Second Shank Length | 0.375 INCHES NOMINAL IN |
| Second End Tip Radius | 0.045 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN |
| Second End Style | CHAMFERED |
| Material | TITANIUM ALLOY UNS R56401 OVERALL |
| 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 |
|---|---|
| 75A321368-2001 PRIMARY | The Boeing Company Div Defense (USA) |
| PL75A321368-2001 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 75A321368-2001 | C/1 Advisory reference — outside the item-of-supply concept Pioneer Machine Products Inc. |
| 75A321368-2001 | C/1 Advisory reference — outside the item-of-supply concept Harlow Aerostructures, Llc |
NSN 5315-01-191-0663 is a Pin,shoulder,headless, manufactured by The Boeing Company Div Defense, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-191-0663 has 2 manufacturer part numbers on file: 75A321368-2001 (The Boeing Company Div Defense), PL75A321368-2001 (The Boeing Company Div Defense).
Key specifications for 75A321368-2001: Shank Diameter: 0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN; Second Shank Diameter: 0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN; Surface Finish: 125.0 MICROINCHES OVERALL; First End Location: SQUARE END. 16 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.