The Pin,shoulder,headless, cataloged under National Stock Number 5315-01-183-5938, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. Government technical data includes 24 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5315-01-183-5938 |
| Item Name | Pin,shoulder,headless |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES CHAMFERED END |
| Undercut Width | 0.085 INCHES NOMINAL IN |
| First End Taper Length | 0.125 INCHES NOMINAL IN |
| First Step Diameter | 0.312 INCHES NOMINAL IN |
| Undercut Diameter | 0.140 INCHES NOMINAL IN |
| First End Location | UNTHREADED END |
| Third Step Diameter | 0.187 INCHES NOMINAL IN |
| Thread Length | 0.275 INCHES NOMINAL IN |
| First End Style | CHAMFERED |
| Hardness Rating | 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| Second Step Length | 0.199 INCHES NOMINAL IN |
| First End Taper Angle | 20.0 DEGREES NOMINAL |
| Second End Relationship with First End | NOT IDENTICAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Second Step Diameter | 0.242 INCHES MINIMUM AND 0.247 INCHES MAXIMUM IN |
| Width Between Flats | 0.156 INCHES NOMINAL IN |
| First Step Length | 0.275 INCHES NOMINAL IN |
| Internal Drive Style | SOCKET |
| Second End Style | SQUARE |
| Thread Class | 3A A |
| Material | STEEL COMP 4130 OR STEEL COMP 4340 OVERALL |
| Thread Series Designator | UNF |
| Third Step Length | 0.187 INCHES NOMINAL IN |
| 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 |
|---|---|
| 6080-4 | 3/9 Design control — primary reference Decatur Cylinder Inc Air-Dro Div |
NSN 5315-01-183-5938 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): 5365-01-391-9513. Verify interchangeability with system specifications before substitution.
Key specifications for 5315-01-183-5938: Surface Finish: 32.0 MICROINCHES CHAMFERED END; Undercut Width: 0.085 INCHES NOMINAL IN; First End Taper Length: 0.125 INCHES NOMINAL IN; First Step Diameter: 0.312 INCHES NOMINAL IN. 24 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.