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NSN 5310-01-628-3791Government record, cited

Washer, Lock5310-01-628-3791

NSN 5310-01-628-3791 · NIIN 016283791 · Part number AT508
Nkk Switches of America Inc · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 63426
Government record, cited
NSN 5310-01-628-3791 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-628-3791. Manufacturer of record part number: AT508.
Also searched as  5310-01-628-3791 · 5310016283791 · NIIN 016283791 · 01-628-3791 · FSC 5310 Nuts and Washers · CAGE 63426 · AT508
Nearby stock numbers  ·
Features
  • Washer,lock — FSC 5310
  • Style Designator: FLAT INTERNAL TEETH
  • Outside Diameter: 0.622 INCHES NOMINAL IN
  • Material Thickness: 0.020 INCHES NOMINAL IN
  • Surface Treatment: CHROMATE ZINC OVERALL
  • Material: STEEL OVERALL
  • Hole Diameter: 0.476 INCHES NOMINAL IN
  • 1 manufacturer part number on file
Identification
  • NSN: 5310-01-628-3791
  • NIIN: 016283791
  • FSC: 5310 — Nuts and Washers
  • FSG: 53 — Hardware and Abrasives
  • Primary part number: AT508
  • Manufacturer: Nkk Switches of America Inc
General Description

The Washer,lock, cataloged under National Stock Number 5310-01-628-3791, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Nkk Switches of America Inc. Government technical data includes 6 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. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-628-3791
Primary Part NumberAT508
Item NameWasher,lock
FSC / FSG5310 / 53 — Nuts and Washers
ManufacturerNkk Switches of America Inc
StatusACTIVE
Style DesignatorFLAT INTERNAL TEETH
Outside Diameter0.622 INCHES NOMINAL IN
Material Thickness0.020 INCHES NOMINAL IN
Surface TreatmentCHROMATE ZINC OVERALL
MaterialSTEEL OVERALL
Hole Diameter0.476 INCHES NOMINAL IN
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
AT508 PRIMARY Nkk Switches of America Inc (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 5310-01-628-3791?

NSN 5310-01-628-3791 is a Washer,lock, manufactured by Nkk Switches of America Inc, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-628-3791?

NSN 5310-01-628-3791 has 1 manufacturer part number on file: AT508 (Nkk Switches of America Inc).

What are the specifications of AT508?

Key specifications for AT508: Style Designator: FLAT INTERNAL TEETH; Outside Diameter: 0.622 INCHES NOMINAL IN; Material Thickness: 0.020 INCHES NOMINAL IN; Surface Treatment: CHROMATE ZINC OVERALL. 6 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-628-3791 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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