The Nut,plain,round, cataloged under National Stock Number 5310-00-305-7614, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Kell-Strom Tool International, Inc.. Government technical data includes 17 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-305-7614 |
| Primary Part Number | S1635-91033 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Kell-Strom Tool International, Inc. |
| Status | ACTIVE |
| Thread Series | UNS |
| Hardness Rating | 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| Nut Counterbore Depth | 3.455 INCHES MINIMUM AND 3.460 INCHES MAXIMUM FIRST END IN |
| Nut Counterbore Depth | 3.515 INCHES MINIMUM AND 3.525 INCHES MAXIMUM SECOND END IN |
| Drive Point Width | 0.323 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 3.437 INCHES IN |
| Nut Diameter | 4.200 INCHES NOMINAL IN |
| Counterbore Diameter | 0.625 INCHES NOMINAL SECOND END IN |
| Counterbore Diameter | 0.687 INCHES NOMINAL FIRST END IN |
| Drive Point Depth | 0.825 INCHES NOMINAL IN |
| Nut Thickness | 2.125 INCHES NOMINAL IN |
| Drive Point Quantity | 9 |
| Nut Style | ROUND |
| Thread Class | 3B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL COMP 4130 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 |
|---|---|
| S1635-91033 PRIMARY | Kell-Strom Tool International, Inc. (USA) |
| S1635-91033 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 5310-00-305-7614 is a Nut,plain,round, manufactured by Kell-Strom Tool International, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-305-7614 has 2 manufacturer part numbers on file: S1635-91033 (Kell-Strom Tool International, Inc.), S1635-91033 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for S1635-91033: Thread Series: UNS; Hardness Rating: 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM; Nut Counterbore Depth: 3.455 INCHES MINIMUM AND 3.460 INCHES MAXIMUM FIRST END IN; Nut Counterbore Depth: 3.515 INCHES MINIMUM AND 3.525 INCHES MAXIMUM SECOND END IN. 17 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.