The Nut,plain,extended Washer,hexago, cataloged under National Stock Number 5310-00-656-7141, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Honeywell International Inc. Div Aerospace - Torrance. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-656-7141 |
| Primary Part Number | 373671 |
| Item Name | Nut,plain,extended Washer,hexago |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Honeywell International Inc. Div Aerospace - Torrance |
| Status | ACTIVE |
| Washer Outside Diameter | 1.615 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN |
| Width Across Flats | 1.428 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN |
| Thread Series | UNS |
| Hardness Rating | 29.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM |
| Thread Pitch Diameters | +1.1369 TO 1.1409 INCHES IN |
| Washer Thickness | 0.080 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.172 INCHES IN |
| Countersink Angle | 88.0 DEGREES NOMINAL NUT |
| Nut Style | HEXAGON |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP E4340 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 |
|---|---|
| 373671 | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| Reference | Meaning |
|---|---|
| 373671 | 3/2 Design control — primary reference U.S. Government activity |
| 373671 | 5/9 Secondary reference Alliedsignal Inc Dba Allied-Signal Aerospace Co |
NSN 5310-00-656-7141 is a Nut,plain,extended Washer,hexago, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-656-7141 has 1 manufacturer part number on file: 373671 (Honeywell International Inc. Div Aerospace - Torrance).
2 possible matches (shared part number, not a government interchangeability claim): 5915-00-948-0215, 5305-01-152-9324. Verify interchangeability with system specifications before substitution.
Key specifications for 373671: Overall Height: 0.540 INCHES MINIMUM AND 0.550 INCHES MAXIMUM IN; Washer Outside Diameter: 1.615 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN; Width Across Flats: 1.428 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN; Thread Series: UNS. 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.