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NSN 5310-01-561-8981Government record, cited

Nut, Plain, Extended Washer, Hexago5310-01-561-8981

NSN 5310-01-561-8981 · NIIN 015618981 · Part number 03363-07
Defense Logistics Agency Dba Defense Supply Center Philadelphia · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 14153
Government record, cited
NSN 5310-01-561-8981 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-561-8981. Manufacturer of record part number: 03363-07.
Also searched as  5310-01-561-8981 · 5310015618981 · NIIN 015618981 · 01-561-8981 · FSC 5310 Nuts and Washers · CAGE 14153 · 03363-07 · 93776A441
Nearby stock numbers  ·
Features
  • Nut,plain,extended Washer,hexago — FSC 5310
  • Washer Outside Diameter: 0.687 INCHES NOMINAL IN
  • Width Across Flats: 0.500 INCHES NOMINAL IN
  • Thread Series: UNF
  • Hardness Rating: 60.0 ROCKWELL B NOMINAL
  • Thread Direction: RIGHT-HAND
  • Nominal Thread Size: 0.312 INCHES IN
  • Nut Style: HEXAGON
Identification
  • NSN: 5310-01-561-8981
  • NIIN: 015618981
  • FSC: 5310 — Nuts and Washers
  • FSG: 53 — Hardware and Abrasives
  • Primary part number: 03363-07
  • Manufacturer: Defense Logistics Agency Dba Defense Supply Center Philadelphia
General Description

The Nut,plain,extended Washer,hexago, cataloged under National Stock Number 5310-01-561-8981, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Defense Logistics Agency Dba Defense Supply Center Philadelphia. Government technical data includes 9 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. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-561-8981
Primary Part Number03363-07
Item NameNut,plain,extended Washer,hexago
FSC / FSG5310 / 53 — Nuts and Washers
ManufacturerDefense Logistics Agency Dba Defense Supply Center Philadelphia
StatusACTIVE
Washer Outside Diameter0.687 INCHES NOMINAL IN
Width Across Flats0.500 INCHES NOMINAL IN
Thread SeriesUNF
Hardness Rating60.0 ROCKWELL B NOMINAL
Thread DirectionRIGHT-HAND
Nominal Thread Size0.312 INCHES IN
Nut StyleHEXAGON
Thread Quantity Per Inch18
MaterialSTEEL CORROSION RESISTING OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
93776A441 Mcmaster-Carr Supply Co (USA)
03363-07 PRIMARY Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA)
No interchangeability data on file.
Other items in FSC 5310 — Nuts and Washers
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
NUT,PLAIN,ROUND
5310-00-000-0079
WASHER,FLAT
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 5310-01-561-8981?

NSN 5310-01-561-8981 is a Nut,plain,extended Washer,hexago, manufactured by Defense Logistics Agency Dba Defense Supply Center Philadelphia, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-561-8981?

NSN 5310-01-561-8981 has 2 manufacturer part numbers on file: 93776A441 (Mcmaster-Carr Supply Co), 03363-07 (Defense Logistics Agency Dba Defense Supply Center Philadelphia).

What are the specifications of 03363-07?

Key specifications for 03363-07: Overall Height: 0.281 INCHES NOMINAL IN; Washer Outside Diameter: 0.687 INCHES NOMINAL IN; Width Across Flats: 0.500 INCHES NOMINAL IN; Thread Series: UNF. 9 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-561-8981 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.
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