The Nut,plain,round, cataloged under National Stock Number 5310-01-147-4907, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rolls-Royce Corporation. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-147-4907 |
| Primary Part Number | 23030981 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS 2405 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Flange Thickness | 0.260 INCHES NOMINAL IN |
| Thread Series | BUTTRESS |
| Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |
| Thread Pitch Diameters | +1.1312 TO 1.1350 INCHES IN |
| Material Document and Classification | EMS 65037,FSCM 73342 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nut Counterbore Depth | 0.150 INCHES NOMINAL SECOND END IN |
| Nut Counterbore Depth | 0.110 INCHES NOMINAL FIRST END IN |
| Drive Point Width | 0.185 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN |
| Thread Direction | LEFT-HAND |
| Nominal Thread Size | 1.156 INCHES IN |
| Nut Diameter | 1.490 INCHES NOMINAL IN |
| Counterbore Diameter | 1.200 INCHES NOMINAL FIRST END IN |
| Counterbore Diameter | 1.180 INCHES MINIMUM AND 1.190 INCHES MAXIMUM SECOND END IN |
| Drive Point Depth | 0.070 INCHES NOMINAL IN |
| Undercut Thickness | 0.110 INCHES NOMINAL IN |
| Nut Thickness | 0.520 INCHES NOMINAL IN |
| Small End Diameter | 1.350 INCHES NOMINAL IN |
| Surface Treatment | NICKEL OVERALL |
| Drive Point Quantity | 4 |
| Nut Style | ROUND |
| Thread Quantity Per Inch | 24 |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| 23001848 | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| 23030981 PRIMARY | Rolls-Royce Corporation (USA) |
| Reference | Meaning |
|---|---|
| E23030981 | C/1 Advisory reference — outside the item-of-supply concept Extex Engineered Products Inc Dba Timken Aerospace Services |
| 23001848 | 5/9 Secondary reference Rolls-Royce Corporation |
| E23030981 | 5/9 Secondary reference Extex, Ltd. |
NSN 5310-01-147-4907 is a Nut,plain,round, manufactured by Rolls-Royce Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-147-4907 has 2 manufacturer part numbers on file: 23001848 (Allison Transmission Inc Dba Allison Transmission, Inc), 23030981 (Rolls-Royce Corporation).
Key specifications for 23030981: Surface Treatment Document and Classification: AMS 2405 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Flange Thickness: 0.260 INCHES NOMINAL IN; Thread Series: BUTTRESS; Hardness Rating: 35.0 ROCKWELL C MINIMUM AND 40.0 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.