The Nut,plain,extended Washer,hexago, cataloged under National Stock Number 5310-01-014-4274, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Goodrich Aerospace Canada Ltd. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-014-4274 |
| Primary Part Number | 18831-1 |
| Item Name | Nut,plain,extended Washer,hexago |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Goodrich Aerospace Canada Ltd |
| Status | ACTIVE |
| Washer Outside Diameter | 1.500 INCHES NOMINAL IN |
| Width Across Flats | 1.000 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | 1500,TYPE 2,CLASS 1 MIL STD ALL TREATMENT RESPONSES OVERALL |
| Thread Series | UN |
| Washer Thickness | 0.125 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-5000 COND E MIL SPEC ALL MATERIAL RESPONSES OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.688 INCHES IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 16 |
| Material | STEEL COMP E4340 OR STEEL COMP 4340 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 |
|---|---|
| 18831-1 PRIMARY | Goodrich Aerospace Canada Ltd (CAN) |
| Reference | Meaning |
|---|---|
| 18831-1 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
NSN 5310-01-014-4274 is a Nut,plain,extended Washer,hexago, manufactured by Goodrich Aerospace Canada Ltd, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-014-4274 has 1 manufacturer part number on file: 18831-1 (Goodrich Aerospace Canada Ltd).
1 possible match (shared part number, not a government interchangeability claim): 5970-01-236-6494. Verify interchangeability with system specifications before substitution.
Key specifications for 18831-1: Overall Height: 0.750 INCHES NOMINAL IN; Washer Outside Diameter: 1.500 INCHES NOMINAL IN; Width Across Flats: 1.000 INCHES NOMINAL IN; Surface Treatment Document and Classification: 1500,TYPE 2,CLASS 1 MIL STD ALL TREATMENT RESPONSES OVERALL. 13 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.