The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-121-4299, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fibreform Electronics, Llc. Government technical data includes 9 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-121-4299 |
| Primary Part Number | 3597777 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fibreform Electronics, Llc |
| Status | ACTIVE |
| Width Across Flats | 1.109 INCHES MINIMUM AND 1.127 INCHES MAXIMUM IN |
| Hole Configuration Style | CONFIGURATION B |
| Nominal Thread Size | 0.750 INCHES IN |
| Nut Height | 0.250 INCHES NOMINAL IN |
| Drilled Hole Diameter | 0.069 INCHES MINIMUM AND 0.074 INCHES MAXIMUM IN |
| Nut Style | HEXAGON |
| Thread Quantity Per Inch | 16 |
| Bearing Surface Type | FLAT |
| Hole Type and Quantity | 6 DRILLED |
| 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 |
|---|---|
| 3597777 | Fibreform Electronics, Llc (USA) |
| Reference | Meaning |
|---|---|
| 10109381 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 3597777 | 3/2 Design control — primary reference U.S. Government activity |
| 3597777 | C/1 Advisory reference — outside the item-of-supply concept Platt Construction Inc |
NSN 5310-01-121-4299 is a Nut,plain,hexagon, manufactured by Fibreform Electronics, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-121-4299 has 1 manufacturer part number on file: 3597777 (Fibreform Electronics, Llc).
Key specifications for 3597777: Width Across Flats: 1.109 INCHES MINIMUM AND 1.127 INCHES MAXIMUM IN; Hole Configuration Style: CONFIGURATION B; Nominal Thread Size: 0.750 INCHES IN; Nut Height: 0.250 INCHES NOMINAL IN. 9 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.