The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-347-5251, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Gil, Inc.. Government technical data includes 8 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 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-347-5251 |
| Primary Part Number | 39656 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Gil, Inc. |
| Status | ACTIVE |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Special Test Features | ITEM IS TO BE CERTIFIED MERCURY FREE |
| Material Document and Classification | MIL-C-17516 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.625 INCHES IN |
| Thread Class | 2B |
| Thread Quantity Per Inch | 11 |
| Material | COPPER ALLOY 655 OVERALL |
| 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 |
|---|---|
| 39656 PRIMARY | Gil, Inc. (USA) |
NSN 5310-01-347-5251 is a Nut,plain,hexagon, manufactured by Gil, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-347-5251 has 1 manufacturer part number on file: 39656 (Gil, Inc.).
3 possible matches (shared part number, not a government interchangeability claim): 6240-01-559-0682, 5305-01-564-2443, 4730-01-594-1786. Verify interchangeability with system specifications before substitution.
Key specifications for 39656: Thread Series: UNIFIED NATIONAL COARSE (UNC); Special Test Features: ITEM IS TO BE CERTIFIED MERCURY FREE; Material Document and Classification: MIL-C-17516 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Thread Direction: RIGHT-HAND. 8 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.