The Pin,shoulder,headless, cataloged under National Stock Number 5315-00-175-3771, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5315-00-175-3771 |
| Item Name | Pin,shoulder,headless |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES SHOULDER END |
| First Step Diameter | 0.7480 INCHES MINIMUM AND 0.7487 INCHES MAXIMUM IN |
| First End Location | THREADED END |
| Third Step Diameter | 0.250 INCHES NOMINAL IN |
| Thread Length | 0.600 INCHES NOMINAL IN |
| First End Style | SQUARE |
| Criticality Code Justification | CSYM |
| Second Step Length | 1.220 INCHES NOMINAL IN |
| Style Designator | SHOULDER |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Second End Relationship with First End | NOT IDENTICAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Second Step Diameter | 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN |
| Width Between Flats | 0.375 INCHES MINIMUM AND 0.379 INCHES MAXIMUM IN |
| First Step Length | 4.100 INCHES NOMINAL IN |
| Internal Drive Style | SOCKET |
| Second End Style | RADIUS |
| Thread Class | 3A A |
| Material | STEEL CORROSION RESISTING OVERALL |
| Second End Corner Radius | 0.060 INCHES NOMINAL IN |
| Thread Series Designator | UNF |
| Third Step Length | 0.710 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| 14-17021-1 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
| 14-17021-1 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
NSN 5315-00-175-3771 is a Pin,shoulder,headless, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5998-01-156-7629. Verify interchangeability with system specifications before substitution.
Key specifications for 5315-00-175-3771: Surface Finish: 63.0 MICROINCHES SHOULDER END; First Step Diameter: 0.7480 INCHES MINIMUM AND 0.7487 INCHES MAXIMUM IN; First End Location: THREADED END; Third Step Diameter: 0.250 INCHES NOMINAL IN. 23 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.