The Nut,concave,square, cataloged under National Stock Number 5310-00-896-6809, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is L3 Technologies, Inc. Div L3 Keo. Government technical data includes 6 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-896-6809 |
| Primary Part Number | 547A003234 |
| Item Name | Nut,concave,square |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | L3 Technologies, Inc. Div L3 Keo |
| Status | ACTIVE |
| Width Across Flats | 0.812 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.5625 INCHES IN |
| Nut Style | DOUBLE CONCAVE, SQUARE |
| Thread Quantity Per Inch | 12 |
| 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 |
|---|---|
| 547A003234 PRIMARY | L3 Technologies, Inc. Div L3 Keo (USA) |
| 547B003234 PRIMARY | L3 Technologies, Inc. Div L3 Keo (USA) |
| Reference | Meaning |
|---|---|
| 003234 | 5/9 Secondary reference Chatham Precision Inc |
| 547A003234 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| A-547-794 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| A547-794 | 5/9 Secondary reference Chatham Precision Inc |
| 003234 | 5/9 Secondary reference L3 Technologies, Inc. Div L3 Keo |
| A547-794 | 5/9 Secondary reference L3 Technologies, Inc. Div L3 Keo |
NSN 5310-00-896-6809 is a Nut,concave,square, manufactured by L3 Technologies, Inc. Div L3 Keo, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-896-6809 has 2 manufacturer part numbers on file: 547A003234 (L3 Technologies, Inc. Div L3 Keo), 547B003234 (L3 Technologies, Inc. Div L3 Keo).
Key specifications for 547A003234: Width Across Flats: 0.812 INCHES NOMINAL IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.5625 INCHES IN. 6 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.