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NSN 5310-01-648-5550Government record, cited
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Nut, Self-Locking, Hexagon5310-01-648-5550

NSN 5310-01-648-5550 · NIIN 016485550
FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives
Government record, cited
Also searched as  5310-01-648-5550 · 5310016485550 · NIIN 016485550 · 01-648-5550 · FSC 5310 Nuts and Washers · 805-1624124 · 805-1624124 PC 104
Nearby stock numbers  ·
10 H 1.088 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN NUT + WASHER
5310-01-648-5550 — Nuts and Washers
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Width Across Flats: 1.088 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Thread Direction: RIGHT-HAND
  • Nominal Thread Size: 0.750 INCHES IN
  • Locking Feature: FREE-RUNNING ALL METAL DESIGN
  • Nut Height: 0.617 INCHES MINIMUM AND 0.665 INCHES MAXIMUM IN
  • Nut Style: HEXAGON
Identification
  • NSN: 5310-01-648-5550
  • NIIN: 016485550
  • FSC: 5310 — Nuts and Washers
  • FSG: 53 — Hardware and Abrasives
General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-648-5550, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-648-5550
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — Nuts and Washers
StatusACTIVE
Width Across Flats1.088 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Thread DirectionRIGHT-HAND
Nominal Thread Size0.750 INCHES IN
Locking FeatureFREE-RUNNING ALL METAL DESIGN
Nut Height0.617 INCHES MINIMUM AND 0.665 INCHES MAXIMUM IN
Nut StyleHEXAGON
Thread Class2B
Thread Quantity Per Inch10
MaterialSTEEL OVERALL
Bearing Surface TypeCHAMFERED OR FLAT
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5315-01-648-6016805-1624124 PC 46 POSSIBLE MATCH
PIN,TAPERED,PLAIN
Possible match (shared part number)Naval Ship Systems Command
5340-01-648-6025805-1624124 PC 45 POSSIBLE MATCH
SLEEVE,COUPLING,CLAMP,GROOVED
Possible match (shared part number)Naval Ship Systems Command
3020-01-648-6029805-1624124 PC 40 POSSIBLE MATCH
GEAR,WORM
Possible match (shared part number)Naval Ship Systems Command
5342-01-648-6046805-1624124 PC 61 POSSIBLE MATCH
DOG,DOOR-HATCH
Possible match (shared part number)Naval Ship Systems Command
3020-01-648-6048805-1624124 PC 37 POSSIBLE MATCH
GEAR,WORM
Possible match (shared part number)Naval Ship Systems Command
3020-01-648-6051805-1624124 PC 41 POSSIBLE MATCH
GEAR,WORM
Possible match (shared part number)Naval Ship Systems Command
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
ReferenceMeaning
805-1624124 D/9 Drawing number reference only
U.S. Government activity
805-1624124 PC 104 3/2 Design control — primary reference
U.S. Government activity
Related Parts
5315-01-648-6016POSSIBLE MATCH
PIN,TAPERED,PLAIN
805-1624124 PC 46
5340-01-648-6025POSSIBLE MATCH
SLEEVE,COUPLING,CLAMP,GROOVED
805-1624124 PC 45
3020-01-648-6029POSSIBLE MATCH
GEAR,WORM
805-1624124 PC 40
5342-01-648-6046POSSIBLE MATCH
DOG,DOOR-HATCH
805-1624124 PC 61
3020-01-648-6048POSSIBLE MATCH
GEAR,WORM
805-1624124 PC 37
3020-01-648-6051POSSIBLE MATCH
GEAR,WORM
805-1624124 PC 41

Frequently Asked Questions

What is NSN 5310-01-648-5550?

NSN 5310-01-648-5550 is a Nut,self-Locking,hexagon, classified under FSC 5310, Nuts and Washers. Status: active.

What NSN replaces 5310-01-648-5550?

6 possible matches (shared part number, not a government interchangeability claim): 5315-01-648-6016, 5340-01-648-6025, 3020-01-648-6029. Verify interchangeability with system specifications before substitution.

What are the specifications of 5310-01-648-5550?

Key specifications for 5310-01-648-5550: Width Across Flats: 1.088 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.750 INCHES IN. 11 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-648-5550 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.

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✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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