The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-018-0853, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Atec 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 | 5310-01-018-0853 |
| Primary Part Number | 103-3038-1 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Atec Inc |
| Status | ACTIVE |
| Width Across Flats | 0.759 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNF |
| Hole Configuration Style | CONFIGURATION B |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.500 INCHES IN |
| Nut Height | 0.375 INCHES NOMINAL IN |
| Drilled Hole Diameter | 0.040 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Countersink Angle | 110.0 DEGREES NOMINAL NUT |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Bearing Surface Type | CHAMFERED OR WASHER FACED |
| Hole Type and Quantity | 2 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 |
|---|---|
| 103-308-1A | Atec Inc (USA) |
| 103-3038-1 PRIMARY | Atec Inc (USA) |
NSN 5310-01-018-0853 is a Nut,plain,hexagon, manufactured by Atec Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-018-0853 has 2 manufacturer part numbers on file: 103-308-1A (Atec Inc), 103-3038-1 (Atec Inc).
Key specifications for 103-3038-1: Width Across Flats: 0.759 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNF; Hole Configuration Style: CONFIGURATION B. 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.