PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

74593ANut,plain,hexagon

Air Products & Chemicals, Inc · NSN 5310-00-619-1961 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-619-1961 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-619-1961. Primary manufacturer part number: 74593A.
Features
  • Nut,plain,hexagon — FSC 5310
  • Nondefinitive Spec/std Data: 2 TYPE AND 4 STYLE
  • Material: STEEL OVERALL
  • Departure From Cited Designator: AS MODIFIED BY WIDTH ACROSS FLATS AND NUT HEIGHT
  • Thread Quantity Per Inch: 5
  • Nominal Thread Size: 1.750 INCHES IN
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Bearing Surface Type: CHAMFERED OR WASHER FACED
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-619-1961, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Air Products & Chemicals, Inc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-619-1961
Primary Part Number74593A
Item NameNut,plain,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerAir Products & Chemicals, Inc
StatusCANCELLED
Nondefinitive Spec/std Data2 TYPE AND 4 STYLE
MaterialSTEEL OVERALL
Departure From Cited DesignatorAS MODIFIED BY WIDTH ACROSS FLATS AND NUT HEIGHT
Thread Quantity Per Inch5
Nominal Thread Size1.750 INCHES IN
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Bearing Surface TypeCHAMFERED OR WASHER FACED
Thread Class2B
Thread DirectionRIGHT-HAND
Nut Height1.500 INCHES NOMINAL IN
Width Across Flats2.625 INCHES NOMINAL IN
Nut StyleHEXAGON
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
5310-00-188-7831 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-188-7833 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-188-7834 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-188-7836 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-221-4845 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-227-798943N6870 INTERCHANGEABLE
Nut,plain,hexagon
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5306-00-579-1469 INTERCHANGEABLE
Bolt,machine
5306-00-579-4948 INTERCHANGEABLE
Bolt,machine
Cross-Reference Index
Part NumberManufacturer
74593A PRIMARY Air Products & Chemicals, Inc (USA)
7B9744 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
MILB857TYPEACLASSC Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
FFN836 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5310-00-188-7831INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-188-7833INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-188-7834INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-188-7836INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-221-4845INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-227-7989INTERCHANGEABLE
NUT,PLAIN,HEXAGON
43N6870
5306-00-579-1469INTERCHANGEABLE
BOLT,MACHINE
5306-00-579-4948INTERCHANGEABLE
BOLT,MACHINE

Frequently Asked Questions

What is NSN 5310-00-619-1961?

NSN 5310-00-619-1961 is a Nut,plain,hexagon, manufactured by Air Products & Chemicals, Inc, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-619-1961?

NSN 5310-00-619-1961 has 4 cross-referenced part numbers: 74593A (Air Products & Chemicals, Inc), 7B9744 (Caterpillar Inc Div Caterpillar Defense), MILB857TYPEACLASSC (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), FFN836 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5310-00-619-1961?

There are 8 known substitutes for 5310-00-619-1961: 5310-00-188-7831, 5310-00-188-7833, 5310-00-188-7834 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 74593A?

Key specifications for 74593A: Nondefinitive Spec/std Data: 2 TYPE AND 4 STYLE; Material: STEEL OVERALL; Departure From Cited Designator: AS MODIFIED BY WIDTH ACROSS FLATS AND NUT HEIGHT; Thread Quantity Per Inch: 5. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-619-1961 still in active supply?

NSN 5310-00-619-1961 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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