The Nut,plain,slotted,hexagon, cataloged under National Stock Number 5310-00-522-4279, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Carrier Corp. Government technical data includes 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-522-4279 |
| Primary Part Number | AT61AA272 |
| Item Name | Nut,plain,slotted,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Carrier Corp |
| Status | ACTIVE |
| Width Across Flats | 0.612 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Thread Series | UNF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.438 INCHES IN |
| Nut Height | 0.453 INCHES NOMINAL IN |
| Nut Style | SLOTTED, HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| Bearing Surface Type | CHAMFERED |
| 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 |
|---|---|
| AT61AA272 PRIMARY | Carrier Corp (USA) |
| Reference | Meaning |
|---|---|
| 280855260-AT61AA727 | 5/1 Secondary reference Noske-Kaeser Germany Gmbh |
| AT61AA-272 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 5310PL0871005 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5310-00-522-4279 is a Nut,plain,slotted,hexagon, manufactured by Carrier Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-522-4279 has 1 manufacturer part number on file: AT61AA272 (Carrier Corp).
Key specifications for AT61AA272: Width Across Flats: 0.612 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN; Thread Series: UNF; Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.438 INCHES IN. 10 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.