The Pin-Rivet, cataloged under National Stock Number 5320-01-491-4879, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is West Coast Aerospace, Inc.. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5320-01-491-4879 |
| Primary Part Number | WC1255E-8L9 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | West Coast Aerospace, Inc. |
| Status | ACTIVE |
| Shank Diameter | 0.2177 INCHES MINIMUM AND 0.2182 INCHES MAXIMUM IN |
| Lubrication | CETYL ALCOHOL AND DRY FILM |
| Fastener Length | 0.887 INCHES NOMINAL IN |
| Head Style | FLUSH COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Grip Length | 0.562 INCHES NOMINAL IN |
| Width Between Flats | 0.0791 INCHES MINIMUM AND 0.0806 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Surface Treatment | PASSIVATE OVERALL |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.294 INCHES MINIMUM AND 0.301 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 | X |
| Part Number | Manufacturer |
|---|---|
| WC1255E-8L9 PRIMARY | West Coast Aerospace, Inc. (USA) |
| EL1381NF6-9Y | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 3M1255E3L9 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| 3M1255E3L9 | 5/9 Secondary reference U.S. Government activity |
NSN 5320-01-491-4879 is a Pin-Rivet, manufactured by West Coast Aerospace, Inc., classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-491-4879 has 2 manufacturer part numbers on file: WC1255E-8L9 (West Coast Aerospace, Inc.), EL1381NF6-9Y (Howmet Global Fastening Systems Inc).
Key specifications for WC1255E-8L9: Shank Diameter: 0.2177 INCHES MINIMUM AND 0.2182 INCHES MAXIMUM IN; Lubrication: CETYL ALCOHOL AND DRY FILM; Fastener Length: 0.887 INCHES NOMINAL IN; Head Style: FLUSH COUNTERSUNK. 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.