PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

T304Screw,machine

All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners · NSN 5305-00-271-2068 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-271-2068 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-271-2068. Primary manufacturer part number: T304.
Features
  • Screw,machine — FSC 5305
  • Width Between Flats: 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
  • Screw Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE
  • Screw Surface Treatment: PASSIVATE
  • Head Style: HEXAGON
  • Thread Class: 2A A
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Internal Drive Style: SLOT
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-00-271-2068, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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
NSN5305-00-271-2068
Primary Part NumberT304
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerAll Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners
StatusACTIVE
Width Between Flats0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
Screw Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE
Screw Surface TreatmentPASSIVATE
Head StyleHEXAGON
Thread Class2A A
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Internal Drive StyleSLOT
Head Height0.270 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN
Thread Quantity Per Inch16
Screw MaterialSTEEL CORROSION RESISTING
Thread DirectionRIGHT-HAND
Fastener Length0.750 INCHES NOMINAL IN
Screw Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE
Minimum Tensile Strength80000 POUNDS PER SQUARE INCH LBS
Nominal Thread Diameter0.375 INCHES IN
Thread Length0.625 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
Nondefinitive Spec/std Data1 TYPE AND 10S STYLE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5306-00-206-19141-33ALT1PC6 INTERCHANGEABLE
Bolt,machine
The Dewey Electronics Corporation Div Pitometer Log Division
5305-00-271-2065280451PC28 INTERCHANGEABLE
Screw,machine
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5305-00-271-2067 INTERCHANGEABLE
Screw,machine
5305-00-271-2080 INTERCHANGEABLE
Screw,machine
5305-00-272-1499183300PC21 INTERCHANGEABLE
Screw,machine
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5305-00-275-9933 INTERCHANGEABLE
Screw,machine
4710-00-279-0942T304 INTERCHANGEABLE
Tube,metallic
Aluminum Co of America
5950-00-345-7474 INTERCHANGEABLE
Transformer,power
3110-00-554-5396 INTERCHANGEABLE
Bearing,ball,annular
5845-00-789-8069115922-6 INTERCHANGEABLE
Emitter Follower
L3harris Technologies, Inc.
Cross-Reference Index
Part NumberManufacturer
T304 PRIMARY All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners (USA)
FFS85TYPE1STYLE10S Federal Specifications Promulgated by General Services Administration Washington DC (USA)
280451PC46 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
5306-00-206-1914INTERCHANGEABLE
BOLT,MACHINE
1-33ALT1PC6
5305-00-271-2065INTERCHANGEABLE
SCREW,MACHINE
280451PC28
5305-00-271-2067INTERCHANGEABLE
SCREW,MACHINE
5305-00-271-2080INTERCHANGEABLE
SCREW,MACHINE
5305-00-272-1499INTERCHANGEABLE
SCREW,MACHINE
183300PC21
5305-00-275-9933INTERCHANGEABLE
SCREW,MACHINE
4710-00-279-0942INTERCHANGEABLE
TUBE,METALLIC
T304
5950-00-345-7474INTERCHANGEABLE
TRANSFORMER,POWER
3110-00-554-5396INTERCHANGEABLE
BEARING,BALL,ANNULAR
5845-00-789-8069INTERCHANGEABLE
EMITTER FOLLOWER
115922-6
5950-01-035-6836INTERCHANGEABLE
REACTOR
1650-01-165-6779INTERCHANGEABLE
AIR MIXER NOZZLE,CA
2-000-007-2

Frequently Asked Questions

What is NSN 5305-00-271-2068?

NSN 5305-00-271-2068 is a Screw,machine, manufactured by All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-271-2068?

NSN 5305-00-271-2068 has 3 cross-referenced part numbers: T304 (All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners), FFS85TYPE1STYLE10S (Federal Specifications Promulgated by General Services Administration Washington DC), 280451PC46 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).

What NSN replaces 5305-00-271-2068?

There are 12 known substitutes for 5305-00-271-2068: 5306-00-206-1914, 5305-00-271-2065, 5305-00-271-2067 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of T304?

Key specifications for T304: Width Between Flats: 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN; Screw Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE; Screw Surface Treatment: PASSIVATE; Head Style: HEXAGON. 17 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com