PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3237327Nut,plain,castellated,hexagon

Hatch & Kirk, Inc. · NSN 5310-00-274-7705 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-274-7705 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-274-7705. Primary manufacturer part number: 3237327.
Features
  • Nut,plain,castellated,hexagon — FSC 5310
  • Thread Class: 3B
  • Thread Quantity Per Inch: 20
  • Bearing Surface Type: CHAMFERED OR WASHER FACED
  • Width Across Flats: 0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
  • Thread Series: UNF
  • Nominal Thread Size: 0.500 INCHES IN
  • Thread Direction: RIGHT-HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,plain,castellated,hexagon, cataloged under National Stock Number 5310-00-274-7705, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hatch & Kirk, Inc.. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-274-7705
Primary Part Number3237327
Item NameNut,plain,castellated,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerHatch & Kirk, Inc.
StatusCANCELLED
Thread Class3B
Thread Quantity Per Inch20
Bearing Surface TypeCHAMFERED OR WASHER FACED
Width Across Flats0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
Thread SeriesUNF
Nominal Thread Size0.500 INCHES IN
Thread DirectionRIGHT-HAND
Nut Height0.553 INCHES MINIMUM AND 0.573 INCHES MAXIMUM IN
Nut StyleCASTELLATED, HEXAGON
MaterialSTEEL OVERALL
Nondefinitive Spec/std Data5 TYPE AND 1 STYLE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
5310-00-167-1289AN310-8 INTERCHANGEABLE
Nut,plain,castellated,hexagon
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-00-221-4695 INTERCHANGEABLE
Nut,plain,castellated,hexagon
5310-00-221-46961B4442 INTERCHANGEABLE
Nut,plain,castellated,hexagon
Caterpillar Inc Div Caterpillar Defense
5310-00-221-4705 INTERCHANGEABLE
Nut,plain,castellated,hexagon
5310-00-221-4708 INTERCHANGEABLE
Nut,plain,castellated,hexagon
5310-00-262-5959 INTERCHANGEABLE
Nut,plain,castellated,hexagon
5310-00-273-7740 INTERCHANGEABLE
Nut,plain,castellated,hexagon
5310-00-273-77533229145 INTERCHANGEABLE
Nut,plain,castellated,hexagon
Hatch & Kirk, Inc.
5310-00-551-7870 INTERCHANGEABLE
Nut,plain,castellated,hexagon
Cross-Reference Index
Part NumberManufacturer
3237327 PRIMARY Hatch & Kirk, Inc. (USA)
FFN836GPBTYPE1STYLE4 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
3237327 General Motors Corp Electro-Motive Div (USA)
FFN836TYPE5STYLE1 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5310-00-167-1289INTERCHANGEABLE
NUT,PLAIN,CASTELLATED,HEXAGON
AN310-8
5310-00-221-4695INTERCHANGEABLE
NUT,PLAIN,CASTELLATED,HEXAGON
5310-00-221-4696INTERCHANGEABLE
NUT,PLAIN,CASTELLATED,HEXAGON
1B4442
5310-00-221-4705INTERCHANGEABLE
NUT,PLAIN,CASTELLATED,HEXAGON
5310-00-221-4708INTERCHANGEABLE
NUT,PLAIN,CASTELLATED,HEXAGON
5310-00-262-5959INTERCHANGEABLE
NUT,PLAIN,CASTELLATED,HEXAGON
5310-00-273-7740INTERCHANGEABLE
NUT,PLAIN,CASTELLATED,HEXAGON
5310-00-273-7753INTERCHANGEABLE
NUT,PLAIN,CASTELLATED,HEXAGON
3229145
5310-00-551-7870INTERCHANGEABLE
NUT,PLAIN,CASTELLATED,HEXAGON

Frequently Asked Questions

What is NSN 5310-00-274-7705?

NSN 5310-00-274-7705 is a Nut,plain,castellated,hexagon, manufactured by Hatch & Kirk, Inc., classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-274-7705?

NSN 5310-00-274-7705 has 4 cross-referenced part numbers: 3237327 (Hatch & Kirk, Inc.), FFN836GPBTYPE1STYLE4 (Federal Specifications Promulgated by General Services Administration Washington DC), 3237327 (General Motors Corp Electro-Motive Div), FFN836TYPE5STYLE1 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5310-00-274-7705?

There are 9 known substitutes for 5310-00-274-7705: 5310-00-167-1289, 5310-00-221-4695, 5310-00-221-4696 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3237327?

Key specifications for 3237327: Thread Class: 3B; Thread Quantity Per Inch: 20; Bearing Surface Type: CHAMFERED OR WASHER FACED; Width Across Flats: 0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-274-7705 still in active supply?

NSN 5310-00-274-7705 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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