The Nut,plain,round, cataloged under National Stock Number 5310-00-678-9522, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Barco Engineering Co Inc. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-678-9522 |
| Primary Part Number | 841B501P1 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Barco Engineering Co Inc |
| Status | ACTIVE |
| Thread Series | UNS |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM |
| Thread Pitch Diameters | +3.0829 TO 3.0888 INCHES IN |
| Material Document and Classification | AMS 6415 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Drive Point Width | 0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 3.137 INCHES IN |
| Nut Diameter | 3.380 INCHES MINIMUM AND 3.400 INCHES MAXIMUM IN |
| Drive Point Depth | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Nut Thickness | 0.370 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Drive Point Quantity | 37 |
| Nut Style | ROUND |
| Thread Quantity Per Inch | 12 |
| Material | STEEL COMP 4340 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 841B501P1 | Barco Engineering Co Inc (USA) |
| 841B501P1 | Mcmellon Bros., Incorporated Dba Mc Mellon Brothers Inc (USA) |
| 841B501P1 | Prem Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 841B501P1 | 5/9 Secondary reference General Electric Company |
| 841B501P1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-678-9522 is a Nut,plain,round, manufactured by Barco Engineering Co Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-678-9522 has 3 manufacturer part numbers on file: 841B501P1 (Barco Engineering Co Inc), 841B501P1 (Mcmellon Bros., Incorporated Dba Mc Mellon Brothers Inc), 841B501P1 (Prem Industries Inc).
Key specifications for 841B501P1: Thread Series: UNS; Hardness Rating: 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM; Thread Pitch Diameters: +3.0829 TO 3.0888 INCHES IN; Material Document and Classification: AMS 6415 ASSN STD SINGLE MATERIAL 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.