NSN 5310-01-373-3891 · NIIN 013733891 · Part number HM41-040
Howmet Global Fastening Systems Inc · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 15653
Government record, cited
NSN 5310-01-373-3891 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-373-3891. Manufacturer of record part number: HM41-040.
Also searched as5310-01-373-3891 ·
5310013733891 ·
NIIN 013733891 ·
01-373-3891 ·
FSC 5310 Nuts and Washers · CAGE 15653 · HM41-040
Washer Outside Diameter: 8.0 MILLIMETERS NOMINAL MM
Width Across Flats: 5.0 MILLIMETERS NOMINAL MM
Thread Series: ISO M
Thread Pitch in Millimeters: 0.70
Washer Thickness: 0.6 MILLIMETERS NOMINAL MM
Nominal Thread Size: 4.0 MILLIMETERS MM
Nut Style: HEXAGON
Identification
NSN: 5310-01-373-3891
NIIN: 013733891
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: HM41-040
Manufacturer: Howmet Global Fastening Systems Inc
General Description
The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-373-3891, 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 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040
5310-00-000-0040 · Item name not on file
5310-00-000-0077
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5310-00-000-0079
WASHER,FLAT
5310-00-000-1146
5310-00-000-1146 · Item name not on file
5310-00-000-3815
5310-00-000-3815 · Item name not on file
5310-00-000-4532
5310-00-000-4532 · Item name not on file
5310-00-000-4540
5310-00-000-4540 · Item name not on file
Frequently Asked Questions
What is NSN 5310-01-373-3891?
NSN 5310-01-373-3891 is a Nut,self-Locking,extended Washer, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-373-3891?
NSN 5310-01-373-3891 has 2 manufacturer part numbers on file: HM41-040 (Boeing Distribution Services SAS), HM41-040 (Howmet Global Fastening Systems Inc).
What are the specifications of HM41-040?
Key specifications for HM41-040: Overall Height: 4.0 MILLIMETERS NOMINAL MM; Washer Outside Diameter: 8.0 MILLIMETERS NOMINAL MM; Width Across Flats: 5.0 MILLIMETERS NOMINAL MM; Thread Series: ISO M. 7 specifications are documented in the U.S. Government catalog.
Is NSN 5310-01-373-3891 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.