The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-038-7393, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Alta Robbins, Inc. Dba Alta Robbins Inc. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-038-7393 |
| Primary Part Number | 6AB |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Alta Robbins, Inc. Dba Alta Robbins Inc |
| Status | ACTIVE |
| Width Across Flats | 0.875 INCHES NOMINAL IN |
| Thread Series | UNEF |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.625 INCHES IN |
| Nut Height | 0.250 INCHES NOMINAL IN |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 303 OVERALL |
| Bearing Surface Type | WASHER FACED |
| 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 |
|---|---|
| 6AB | Alta Robbins, Inc. Dba Alta Robbins Inc (USA) |
| Reference | Meaning |
|---|---|
| 6AB | 3/9 Design control — primary reference Dynatech Frontier Corp Sub of Dynatech Corp |
NSN 5310-01-038-7393 is a Nut,plain,hexagon, manufactured by Alta Robbins, Inc. Dba Alta Robbins Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-038-7393 has 1 manufacturer part number on file: 6AB (Alta Robbins, Inc. Dba Alta Robbins Inc).
1 possible match (shared part number, not a government interchangeability claim): 6680-01-141-9253. Verify interchangeability with system specifications before substitution.
Key specifications for 6AB: Width Across Flats: 0.875 INCHES NOMINAL IN; Thread Series: UNEF; Material Document and Classification: AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Thread Direction: RIGHT-HAND. 11 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.