PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

274304PC3Bolt,machine

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5306-00-272-5104 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-272-5104 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-272-5104. Primary manufacturer part number: 274304PC3.
Features
  • Bolt,machine — FSC 5306
  • Fastener Length: 1.250 INCHES NOMINAL IN
  • Thread Length: 1.000 INCHES MINIMUM IN
  • Width Between Flats: 0.544 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
  • Shank Unthreaded Hole Diameter: 0.109 INCHES NOMINAL FIRST HOLE IN
  • Nominal Thread Diameter: 0.375 INCHES IN
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Material: STEEL OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Bolt,machine, cataloged under National Stock Number 5306-00-272-5104, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-272-5104
Primary Part Number274304PC3
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Fastener Length1.250 INCHES NOMINAL IN
Thread Length1.000 INCHES MINIMUM IN
Width Between Flats0.544 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
Shank Unthreaded Hole Diameter0.109 INCHES NOMINAL FIRST HOLE IN
Nominal Thread Diameter0.375 INCHES IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
MaterialSTEEL OVERALL
Thread Class3A A
Nondefinitive Spec/std Data2 TYPE AND 2 GRADE
Thread Quantity Per Inch16
Hardness Rating100.0 ROCKWELL C MAXIMUM OVERALL
Features ProvidedUNFINISHED HEAD
Minimum Tensile Strength69000 POUNDS PER SQUARE INCH LBS
Distance From Head Largest Bearing Surface to Shank Hole Center1.062 INCHES NOMINAL FIRST HOLE IN
Surface TreatmentCADMIUM OVERALL
Thread DirectionRIGHT-HAND
Head Height0.281 INCHES MINIMUM IN
Head StyleHEXAGON
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
Bolt,machine
Bolt,machine
Bolt,machine
Bolt,machine
Bolt,machine
Bolt,machine
Bolt,machine
5305-00-174-9462 INTERCHANGEABLE
Screw,cap,hexagon Head
5306-00-275-9800280450PC252 INTERCHANGEABLE
Bolt,machine
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5306-00-299-2343 INTERCHANGEABLE
Bolt,machine
Cross-Reference Index
Part NumberManufacturer
274304PC3 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
MILB857TYPE2GRADE2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5306-00-174-9458SUCCESSOR
BOLT,MACHINE
5306-00-174-9463SUCCESSOR
BOLT,MACHINE
5306-00-174-9530SUCCESSOR
BOLT,MACHINE
5306-00-281-3741SUCCESSOR
BOLT,MACHINE
5306-00-299-2336SUCCESSOR
BOLT,MACHINE
5306-00-299-2339SUCCESSOR
BOLT,MACHINE
5306-00-299-2380SUCCESSOR
BOLT,MACHINE
5305-00-174-9462INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5306-00-275-9800INTERCHANGEABLE
BOLT,MACHINE
280450PC252
5306-00-299-2343INTERCHANGEABLE
BOLT,MACHINE
5305-00-299-2366INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5306-00-299-2368INTERCHANGEABLE
BOLT,MACHINE

Frequently Asked Questions

What is NSN 5306-00-272-5104?

NSN 5306-00-272-5104 is a Bolt,machine, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-00-272-5104?

NSN 5306-00-272-5104 has 2 cross-referenced part numbers: 274304PC3 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), MILB857TYPE2GRADE2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5306-00-272-5104?

There are 12 known substitutes for 5306-00-272-5104: 5306-00-174-9458, 5306-00-174-9463, 5306-00-174-9530 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 274304PC3?

Key specifications for 274304PC3: Fastener Length: 1.250 INCHES NOMINAL IN; Thread Length: 1.000 INCHES MINIMUM IN; Width Between Flats: 0.544 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN; Shank Unthreaded Hole Diameter: 0.109 INCHES NOMINAL FIRST HOLE IN. 18 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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