PartsTable TECHNICAL DATA SHEET
NSN 5310-00-722-8530Government record, cited

Nut, Self-Locking, Hexagon5310-00-722-8530

NSN 5310-00-722-8530 · NIIN 007228530 · Part number 50FKF518
Sps Technologies, Llc Dba PB Fasteners · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 56878
Government record, cited
NSN 5310-00-722-8530 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-722-8530. Manufacturer of record part number: 50FKF518.
Also searched as  5310-00-722-8530 · 5310007228530 · NIIN 007228530 · 00-722-8530 · FSC 5310 Nuts and Washers · CAGE 56878 · 50FKF518
Nearby stock numbers  ·
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Width Across Flats: 0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Temp Rating: 800.0 FAHRENHEIT NOMINAL DEGF
  • Thread Direction: RIGHT-HAND
  • Nominal Thread Size: 0.312 INCHES IN
  • Locking Feature: PREVAILING TORQUE ALL METAL DESIGN
  • Nut Height: 0.246 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
Identification
  • NSN: 5310-00-722-8530
  • NIIN: 007228530
  • FSC: 5310 — Nuts and Washers
  • FSG: 53 — Hardware and Abrasives
  • Primary part number: 50FKF518
  • Manufacturer: Sps Technologies, Llc Dba PB Fasteners
General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-722-8530, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 13 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
NSN5310-00-722-8530
Primary Part Number50FKF518
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — Nuts and Washers
ManufacturerSps Technologies, Llc Dba PB Fasteners
StatusACTIVE
Width Across Flats0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Temp Rating800.0 FAHRENHEIT NOMINAL DEGF
Thread DirectionRIGHT-HAND
Nominal Thread Size0.312 INCHES IN
Locking FeaturePREVAILING TORQUE ALL METAL DESIGN
Nut Height0.246 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
Surface TreatmentPASSIVATE OVERALL
Nut StyleHEXAGON
Thread Class2B
Thread Quantity Per Inch18
MaterialSTEEL CORROSION RESISTING OVERALL
Bearing Surface TypeCHAMFERED
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
50FKF518 Allmetal Screw Products Corp (USA)
50FKF518 PRIMARY Sps Technologies, Llc Dba PB Fasteners (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 5310-00-722-8530?

NSN 5310-00-722-8530 is a Nut,self-Locking,hexagon, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-00-722-8530?

NSN 5310-00-722-8530 has 2 manufacturer part numbers on file: 50FKF518 (Allmetal Screw Products Corp), 50FKF518 (Sps Technologies, Llc Dba PB Fasteners).

What are the specifications of 50FKF518?

Key specifications for 50FKF518: Width Across Flats: 0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Temp Rating: 800.0 FAHRENHEIT NOMINAL DEGF; Thread Direction: RIGHT-HAND. 13 specifications are documented in the U.S. Government catalog.

Is NSN 5310-00-722-8530 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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