The Pin,straight,headless, cataloged under National Stock Number 5315-01-325-6981, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is 2is Inc.. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5315-01-325-6981 |
| Primary Part Number | SW28381 |
| Item Name | Pin,straight,headless |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | 2is Inc. |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES OUTSIDE DIAMETER |
| First End Taper Length | 0.190 INCHES NOMINAL IN |
| Hole Arrangement Style | ONE END DRILLED |
| First End Style | CHAMFERED |
| First Hole Diameter | 0.406 INCHES NOMINAL IN |
| Hardness Rating | 58.0 ROCKWELL C NOMINAL OVERALL |
| Material Document and Classification | ASTM A304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| First End Taper Angle | 45.0 DEGREES NOMINAL |
| Pin Overall Diameter | 1.9937 INCHES MINIMUM AND 1.9940 INCHES MAXIMUM IN |
| Pin Overall Length | 6.939 INCHES MINIMUM AND 6.969 INCHES MAXIMUM IN |
| Second End Relationship with First End | NOT IDENTICAL |
| Second End Style | SQUARE |
| Material | STEEL COMP 4140H OVERALL |
| Distance From Centerline of Hole to End of Pin | 0.563 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 |
| Part Number | Manufacturer |
|---|---|
| SW28381 | 2is Inc. (USA) |
| Reference | Meaning |
|---|---|
| SW28181-D | 5/9 Secondary reference U.S. Government activity |
| SW28381 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5315-01-325-6981 is a Pin,straight,headless, manufactured by 2is Inc., classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-325-6981 has 1 manufacturer part number on file: SW28381 (2is Inc.).
Key specifications for SW28381: Surface Finish: 32.0 MICROINCHES OUTSIDE DIAMETER; First End Taper Length: 0.190 INCHES NOMINAL IN; Hole Arrangement Style: ONE END DRILLED; First End Style: CHAMFERED. 14 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.