PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

121323Nut,plain,slotted,hexagon

Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. · NSN 5310-00-262-6103 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-262-6103 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-262-6103. Primary manufacturer part number: 121323.
Features
  • Nut,plain,slotted,hexagon — FSC 5310
  • Nut Height: 0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
  • Thread Class: 3B
  • Nominal Thread Size: 0.438 INCHES IN
  • Bearing Surface Type: WASHER FACED
  • Thread Quantity Per Inch: 20
  • Thread Series: UNF
  • Material: STEEL OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,plain,slotted,hexagon, cataloged under National Stock Number 5310-00-262-6103, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.. Government technical data includes 11 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-262-6103
Primary Part Number121323
Item NameNut,plain,slotted,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerPratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
StatusACTIVE
Nut Height0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
Thread Class3B
Nominal Thread Size0.438 INCHES IN
Bearing Surface TypeWASHER FACED
Thread Quantity Per Inch20
Thread SeriesUNF
MaterialSTEEL OVERALL
Surface TreatmentCADMIUM OVERALL
Thread DirectionRIGHT-HAND
Width Across Flats0.612 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
Nut StyleSLOTTED, HEXAGON
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
4730-00-270-4606SAE J512 6-4 010103B INTERCHANGEABLE
Adapter,straight,pipe to Tube
Sae International Dba Sae International
5970-01-075-6525 INTERCHANGEABLE
Insulator,bushing
3120-01-178-1291 INTERCHANGEABLE
Bushing,sleeve
5120-01-717-0161121323 INTERCHANGEABLE
Wrench,combination,special Purpo
Charles Reed Knight Jr Dba Knight's Armament Company
Cross-Reference Index
Part NumberManufacturer
121323 PRIMARY Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN)
Related Parts
4730-00-270-4606INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
SAE J512 6-4 010103B
5970-01-075-6525INTERCHANGEABLE
INSULATOR,BUSHING
3120-01-178-1291INTERCHANGEABLE
BUSHING,SLEEVE
5120-01-717-0161INTERCHANGEABLE
WRENCH,COMBINATION,SPECIAL PURPO
121323

Frequently Asked Questions

What is NSN 5310-00-262-6103?

NSN 5310-00-262-6103 is a Nut,plain,slotted,hexagon, manufactured by Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-262-6103?

NSN 5310-00-262-6103 has 1 cross-referenced part number: 121323 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).

What NSN replaces 5310-00-262-6103?

There are 4 known substitutes for 5310-00-262-6103: 4730-00-270-4606, 5970-01-075-6525, 3120-01-178-1291 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 121323?

Key specifications for 121323: Nut Height: 0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN; Thread Class: 3B; Nominal Thread Size: 0.438 INCHES IN; Bearing Surface Type: WASHER FACED. 11 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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