The Nut,plain,extended Washer,hexago, cataloged under National Stock Number 5310-01-194-8488, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-194-8488 |
| Primary Part Number | 75A121609-2007 |
| Item Name | Nut,plain,extended Washer,hexago |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Washer Outside Diameter | 1.125 INCHES NOMINAL IN |
| Width Across Flats | 0.312 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | PS 13105,FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Washer Thickness | 0.220 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-5626 COND 3 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.437 INCHES IN |
| Surface Treatment | NICKEL OVERALL |
| Countersink Angle | 90.0 DEGREES NOMINAL BOTH ENDS |
| Nut Style | SLOTTED HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 4140 OVERALL |
| 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 |
|---|---|
| 75A121609-2007 PRIMARY | The Boeing Company Div Defense (USA) |
NSN 5310-01-194-8488 is a Nut,plain,extended Washer,hexago, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-194-8488 has 1 manufacturer part number on file: 75A121609-2007 (The Boeing Company Div Defense).
Key specifications for 75A121609-2007: Overall Height: 0.625 INCHES NOMINAL IN; Washer Outside Diameter: 1.125 INCHES NOMINAL IN; Width Across Flats: 0.312 INCHES NOMINAL IN; Surface Treatment Document and Classification: PS 13105,FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL. 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.