The Nut,plain,round, cataloged under National Stock Number 5310-00-997-2879, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Unison Industries Llc. Government technical data includes 23 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-997-2879 |
| Primary Part Number | 570352 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Unison Industries Llc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OR AMS2412 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNS |
| Precious Material | SILVER |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | AMS 6381 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 6382 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nut Counterbore Depth | 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM NUT IN |
| Drive Point Width | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.586 INCHES IN |
| Nut Diameter | 1.050 INCHES MINIMUM AND 1.070 INCHES MAXIMUM IN |
| Counterbore Diameter | 0.710 INCHES MINIMUM AND 0.730 INCHES MAXIMUM NUT IN |
| Drive Point Depth | 0.060 INCHES NOMINAL IN |
| Undercut Thickness | 0.200 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN |
| Nut Thickness | 0.420 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| Small End Diameter | 0.890 INCHES MINIMUM AND 0.910 INCHES MAXIMUM IN |
| Surface Treatment | SILVER OVERALL |
| Precious Material and Location | EXTERNAL SURFACES SILVER |
| Countersink Angle | 45.0 DEGREES NOMINAL NUT |
| Drive Point Quantity | 8 |
| Nut Style | ROUND |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| 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 |
|---|---|
| 570352 PRIMARY | Unison Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| 570352 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| 570352 | 5/9 Secondary reference Royal Oak Gage, Inc |
| 570352 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-00-997-2879 is a Nut,plain,round, manufactured by Unison Industries Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-997-2879 has 1 manufacturer part number on file: 570352 (Unison Industries Llc).
Key specifications for 570352: Surface Treatment Document and Classification: AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OR AMS2412 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNS; Precious Material: SILVER; Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM. 23 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.