PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

55591Nut,plain,hexagon

Parker Hannifin Corporation Div Hydraulic Systems Division · NSN 5310-00-983-5106 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-983-5106 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-983-5106. Primary manufacturer part number: 55591.
Features
  • Nut,plain,hexagon — FSC 5310
  • Drilled Hole Diameter: 0.063 INCHES NOMINAL IN
  • Nut Height: 0.281 INCHES NOMINAL IN
  • Thread Direction: RIGHT-HAND
  • Thread Series: UNF
  • Hole Configuration Style: CONFIGURATION H
  • Nominal Thread Size: 0.562 INCHES IN
  • Thread Quantity Per Inch: 18
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-983-5106, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Parker Hannifin Corporation Div Hydraulic Systems Division. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-983-5106
Primary Part Number55591
Item NameNut,plain,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerParker Hannifin Corporation Div Hydraulic Systems Division
StatusACTIVE
Drilled Hole Diameter0.063 INCHES NOMINAL IN
Nut Height0.281 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Thread SeriesUNF
Hole Configuration StyleCONFIGURATION H
Nominal Thread Size0.562 INCHES IN
Thread Quantity Per Inch18
Bearing Surface TypeFLAT
Width Across Flats0.875 INCHES NOMINAL IN
Nut StyleHEXAGON
Thread Class3B
Hole Type and Quantity3 DRILLED
MaterialSTEEL CORROSION RESISTING OVERALL
Surface TreatmentPASSIVATE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
2920-00-354-0205820052 INTERCHANGEABLE
Switch,engine Starter,electrical
Delco Remy America Inc
3010-01-035-7302ERD-100-24 INTERCHANGEABLE
Clutch,magnetic,nonvehicular
Stromag Inc
3120-01-048-05859642M46P02 INTERCHANGEABLE
Bearing,plain,self-Aligning
Rbc Transport Dynamics Corp Div Rbc Transport Dynamics
4520-01-428-315855591 INTERCHANGEABLE
Heating Element,electrical,nonim
Indeeco Llc Dba Indeeco
4920-01-491-529780201121393-1 INTERCHANGEABLE
Rf Waterload,aircra
Electro Impulse Laboratory Inc Dba Electro Impulse Inc
1080-01-541-30762KP750 INTERCHANGEABLE
Cover,camouflage Screening
Oshkosh Defense Llc
Cross-Reference Index
Part NumberManufacturer
55591 PRIMARY Parker Hannifin Corporation Div Hydraulic Systems Division (USA)
Related Parts
2920-00-354-0205INTERCHANGEABLE
SWITCH,ENGINE STARTER,ELECTRICAL
820052
3010-01-035-7302INTERCHANGEABLE
CLUTCH,MAGNETIC,NONVEHICULAR
ERD-100-24
3120-01-048-0585INTERCHANGEABLE
BEARING,PLAIN,SELF-ALIGNING
9642M46P02
4520-01-428-3158INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
55591
4920-01-491-5297INTERCHANGEABLE
RF WATERLOAD,AIRCRA
80201121393-1
1080-01-541-3076INTERCHANGEABLE
COVER,CAMOUFLAGE SCREENING
2KP750

Frequently Asked Questions

What is NSN 5310-00-983-5106?

NSN 5310-00-983-5106 is a Nut,plain,hexagon, manufactured by Parker Hannifin Corporation Div Hydraulic Systems Division, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-983-5106?

NSN 5310-00-983-5106 has 1 cross-referenced part number: 55591 (Parker Hannifin Corporation Div Hydraulic Systems Division).

What NSN replaces 5310-00-983-5106?

There are 6 known substitutes for 5310-00-983-5106: 2920-00-354-0205, 3010-01-035-7302, 3120-01-048-0585 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 55591?

Key specifications for 55591: Drilled Hole Diameter: 0.063 INCHES NOMINAL IN; Nut Height: 0.281 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND; Thread Series: UNF. 14 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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