The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-416-5252, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Beswick Engineering Co Inc. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-416-5252 |
| Primary Part Number | MKC-140 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Beswick Engineering Co Inc |
| Status | ACTIVE |
| Width Across Flats | 0.328 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN |
| Nut Height | 0.340 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN |
| Material | COPPER ALLOY OVERALL |
| Bearing Surface Type | CHAMFERED OR 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 |
|---|---|
| MKC-140 PRIMARY | Beswick Engineering Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 3307366-1 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5310-01-416-5252 is a Nut,plain,hexagon, manufactured by Beswick Engineering Co Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-416-5252 has 1 manufacturer part number on file: MKC-140 (Beswick Engineering Co Inc).
Key specifications for MKC-140: Width Across Flats: 0.328 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN; Nut Height: 0.340 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN; Material: COPPER ALLOY OVERALL; Bearing Surface Type: CHAMFERED OR WASHER FACED. 4 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.