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NSN 5310-01-631-2011Government record, cited

Nut, Plain, Extended Washer, Hexago5310-01-631-2011

NSN 5310-01-631-2011 · NIIN 016312011 · Part number 755-90207-81
Graymills Corporation · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 26023
Government record, cited
NSN 5310-01-631-2011 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-631-2011. Manufacturer of record part number: 755-90207-81.
Also searched as  5310-01-631-2011 · 5310016312011 · NIIN 016312011 · 01-631-2011 · FSC 5310 Nuts and Washers · CAGE 26023 · 755-90207-81
Nearby stock numbers  ·
Features
  • Nut,plain,extended Washer,hexago — FSC 5310
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Thread Direction: RIGHT-HAND
  • Nominal Thread Size: 0.250 INCHES IN
  • Nut Style: HEXAGON
  • Thread Quantity Per Inch: 20
  • 1 manufacturer part number on file
  • Manufacturer of record: Graymills Corporation
Identification
  • NSN: 5310-01-631-2011
  • NIIN: 016312011
  • FSC: 5310 — Nuts and Washers
  • FSG: 53 — Hardware and Abrasives
  • Primary part number: 755-90207-81
  • Manufacturer: Graymills Corporation
General Description

The Nut,plain,extended Washer,hexago, cataloged under National Stock Number 5310-01-631-2011, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Graymills Corporation. Government technical data includes 5 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
NSN5310-01-631-2011
Primary Part Number755-90207-81
Item NameNut,plain,extended Washer,hexago
FSC / FSG5310 / 53 — Nuts and Washers
ManufacturerGraymills Corporation
StatusACTIVE
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Thread DirectionRIGHT-HAND
Nominal Thread Size0.250 INCHES IN
Nut StyleHEXAGON
Thread Quantity Per Inch20
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
755-90207-81 PRIMARY Graymills Corporation (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 5310-01-631-2011?

NSN 5310-01-631-2011 is a Nut,plain,extended Washer,hexago, manufactured by Graymills Corporation, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-631-2011?

NSN 5310-01-631-2011 has 1 manufacturer part number on file: 755-90207-81 (Graymills Corporation).

What are the specifications of 755-90207-81?

Key specifications for 755-90207-81: Thread Series: UNIFIED NATIONAL COARSE (UNC); Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.250 INCHES IN; Nut Style: HEXAGON. 5 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-631-2011 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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