The Pin-Rivet, cataloged under National Stock Number 5320-01-491-4875, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-491-4875 |
| Primary Part Number | 3M1255E4L8 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Shank Diameter | 0.2802 INCHES MINIMUM AND 0.2807 INCHES MAXIMUM IN |
| Lubrication | CETYL ALCOHOL AND DRY FILM |
| Fastener Length | 0.885 INCHES NOMINAL IN |
| Head Style | FLUSH COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Grip Length | 0.500 INCHES MAXIMUM IN |
| Width Between Flats | 0.0947 INCHES MINIMUM AND 0.0967 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Surface Treatment | PASSIVATE OVERALL |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.390 INCHES MINIMUM AND 0.397 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-8L8 | West Coast Aerospace, Inc. (USA) |
| 3M1255E4L8 PRIMARY | The Boeing Company Div Defense (USA) |
| EL1381NF8-8Y | Howmet Global Fastening Systems Inc (USA) |
NSN 5320-01-491-4875 is a Pin-Rivet, manufactured by The Boeing Company Div Defense, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-491-4875 has 3 manufacturer part numbers on file: WC1255E-8L8 (West Coast Aerospace, Inc.), 3M1255E4L8 (The Boeing Company Div Defense), EL1381NF8-8Y (Howmet Global Fastening Systems Inc).
Key specifications for 3M1255E4L8: Shank Diameter: 0.2802 INCHES MINIMUM AND 0.2807 INCHES MAXIMUM IN; Lubrication: CETYL ALCOHOL AND DRY FILM; Fastener Length: 0.885 INCHES NOMINAL IN; Head Style: FLUSH COUNTERSUNK. 15 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.