The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-565-7102, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Hermetic Seal Corporation Div Ametek Inc.. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-565-7102 |
| Primary Part Number | NH20-20-1-425-1 40 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Hermetic Seal Corporation Div Ametek Inc. |
| Status | ACTIVE |
| Width Across Flats | 1.455 INCHES NOMINAL IN |
| Thread Series | UN |
| Hole Configuration Style | CONFIGURATION B |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.250 INCHES IN |
| Nut Height | 0.109 INCHES MINIMUM AND 0.142 INCHES MAXIMUM IN |
| Drilled Hole Diameter | 0.046 INCHES NOMINAL IN |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Bearing Surface Type | CHAMFERED |
| Hole Type and Quantity | 3 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 |
|---|---|
| NH20-20-1-425-1 40 PRIMARY | Hermetic Seal Corporation Div Ametek Inc. (USA) |
| Reference | Meaning |
|---|---|
| 184741 | 7/2 Vendor item drawing reference Honeywell International Inc Div Aerospace-South Bend (bendix Dr) |
NSN 5310-00-565-7102 is a Nut,plain,hexagon, manufactured by Hermetic Seal Corporation Div Ametek Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-565-7102 has 1 manufacturer part number on file: NH20-20-1-425-1 40 (Hermetic Seal Corporation Div Ametek Inc.).
Key specifications for NH20-20-1-425-1 40: Width Across Flats: 1.455 INCHES NOMINAL IN; Thread Series: UN; Hole Configuration Style: CONFIGURATION B; Thread Direction: RIGHT-HAND. 13 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.