The Pin,shoulder,headless, cataloged under National Stock Number 5315-01-101-5622, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is Smiths Aerospace, Inc., Electronic Systems-Grand Rapids. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5315-01-101-5622 |
| Primary Part Number | 21273 |
| Item Name | Pin,shoulder,headless |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Smiths Aerospace, Inc., Electronic Systems-Grand Rapids |
| Status | ACTIVE |
| Shank Diameter | 0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN |
| Surface Finish | 64.0 MICROINCHES UNTHREADED END |
| First End Location | THREADED END |
| First End Slot Width | 0.003 INCHES MINIMUM AND 0.006 INCHES MAXIMUM IN |
| Thread Length | 0.156 INCHES NOMINAL IN |
| First End Style | SLOTTED |
| Shank Length | 0.375 INCHES NOMINAL IN |
| Style Designator | SHOULDER |
| Second End Relationship with First End | NOT IDENTICAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| First End Slot Depth | 0.003 INCHES MINIMUM AND 0.006 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.190 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | SLOT |
| Second End Style | SQUARE |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 303 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 | X |
| Part Number | Manufacturer |
|---|---|
| 21273 PRIMARY | Smiths Aerospace, Inc., Electronic Systems-Grand Rapids (USA) |
| Reference | Meaning |
|---|---|
| 21273D | 5/9 Secondary reference Smiths Aerospace, Inc., Electronic Systems-Grand Rapids |
NSN 5315-01-101-5622 is a Pin,shoulder,headless, manufactured by Smiths Aerospace, Inc., Electronic Systems-Grand Rapids, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-101-5622 has 1 manufacturer part number on file: 21273 (Smiths Aerospace, Inc., Electronic Systems-Grand Rapids).
3 possible matches (shared part number, not a government interchangeability claim): 4130-01-300-5001, 4810-01-307-0039, 1660-01-672-5156. Verify interchangeability with system specifications before substitution.
Key specifications for 21273: Shank Diameter: 0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN; Surface Finish: 64.0 MICROINCHES UNTHREADED END; First End Location: THREADED END; First End Slot Width: 0.003 INCHES MINIMUM AND 0.006 INCHES MAXIMUM IN. 20 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.