The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-231-9346, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-231-9346 |
| Primary Part Number | HM41-030 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Washer Outside Diameter | 6.0 MILLIMETERS NOMINAL MM |
| Width Across Flats | 4.0 MILLIMETERS NOMINAL MM |
| Thread Tolerance Class | 4H5H INTERNAL |
| Surface Treatment Document and Classification | AMS2411 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | ISO M |
| Precious Material | SILVER |
| Thread Pitch in Millimeters | 0.50 |
| Temp Rating | 425.0 CELSIUS MAXIMUM DEGC |
| Washer Thickness | 0.5 MILLIMETERS MINIMUM MM |
| Material Document and Classification | AMS5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 3.0 MILLIMETERS MM |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | SILVER OVERALL |
| Nut Style | HEXAGON |
| Material | IRON ALLOY 660 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 |
|---|---|
| HM41-030 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HM41-030 | Boeing Distribution Services SAS (FRA) |
| 620-857-563-0 | Safran Aircraft Engines (FRA) |
| 3000S01508 | Honeywell Aerospace Yeovil Div Aerospace -Yeovil (GBR) |
| HM41-030 | Satair A/s (DNK) |
| Reference | Meaning |
|---|---|
| HM41-030 | 5/9 Secondary reference Tecnotec Sarl |
| HM41-030 | 5/9 Secondary reference Klx Aerospace Solutions II SAS |
NSN 5310-01-231-9346 is a Nut,self-Locking,extended Washer, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-231-9346 has 5 manufacturer part numbers on file: HM41-030 (Howmet Global Fastening Systems Inc), HM41-030 (Boeing Distribution Services SAS), 620-857-563-0 (Safran Aircraft Engines), 3000S01508 (Honeywell Aerospace Yeovil Div Aerospace -Yeovil), HM41-030 (Satair A/s).
Key specifications for HM41-030: Overall Height: 3.0 MILLIMETERS MAXIMUM MM; Washer Outside Diameter: 6.0 MILLIMETERS NOMINAL MM; Width Across Flats: 4.0 MILLIMETERS NOMINAL MM; Thread Tolerance Class: 4H5H INTERNAL. 16 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.