PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3311AScrew,machine

Brinkley Technology Group Llc Dba Hercules Manufacturing · NSN 5305-00-579-0478 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-579-0478 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-579-0478. Primary manufacturer part number: 3311A.
Features
  • Screw,machine — FSC 5305
  • Nominal Thread Diameter: 0.312 INCHES IN
  • Head Diameter: 0.437 INCHES NOMINAL IN
  • Fastener Length: 2.250 INCHES NOMINAL IN
  • Thread Class: 3A A
  • Head Style: FILLISTER
  • Thread Quantity Per Inch: 18
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-00-579-0478, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Brinkley Technology Group Llc Dba Hercules Manufacturing. Government technical data includes 14 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-579-0478
Primary Part Number3311A
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerBrinkley Technology Group Llc Dba Hercules Manufacturing
StatusCANCELLED
Nominal Thread Diameter0.312 INCHES IN
Head Diameter0.437 INCHES NOMINAL IN
Fastener Length2.250 INCHES NOMINAL IN
Thread Class3A A
Head StyleFILLISTER
Thread Quantity Per Inch18
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Thread DirectionRIGHT-HAND
Thread Length1.937 INCHES NOMINAL IN
Screw Surface TreatmentCADMIUM OR ZINC
Screw Material Document and ClassificationQQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE
Head Height0.186 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
Internal Drive StyleSLOT
Screw MaterialSTEEL COMP 1115
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5306-00-254-96623311A INTERCHANGEABLE
Bolt,machine
Caterpillar Inc Div Caterpillar Defense
7050-01-015-6062 INTERCHANGEABLE
Generator,function,analog Comput
4730-01-023-1207 INTERCHANGEABLE
Tailpiece,union
Cross-Reference Index
Part NumberManufacturer
3311A Hercules Engine Co Inc (USA)
3311A PRIMARY Brinkley Technology Group Llc Dba Hercules Manufacturing (USA)
Related Parts
5306-00-254-9662INTERCHANGEABLE
BOLT,MACHINE
3311A
7050-01-015-6062INTERCHANGEABLE
GENERATOR,FUNCTION,ANALOG COMPUT
4730-01-023-1207INTERCHANGEABLE
TAILPIECE,UNION

Frequently Asked Questions

What is NSN 5305-00-579-0478?

NSN 5305-00-579-0478 is a Screw,machine, manufactured by Brinkley Technology Group Llc Dba Hercules Manufacturing, classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-00-579-0478?

NSN 5305-00-579-0478 has 2 cross-referenced part numbers: 3311A (Hercules Engine Co Inc), 3311A (Brinkley Technology Group Llc Dba Hercules Manufacturing).

What NSN replaces 5305-00-579-0478?

There are 3 known substitutes for 5305-00-579-0478: 5306-00-254-9662, 7050-01-015-6062, 4730-01-023-1207. Verify interchangeability with system specifications before substitution.

What are the specifications of 3311A?

Key specifications for 3311A: Nominal Thread Diameter: 0.312 INCHES IN; Head Diameter: 0.437 INCHES NOMINAL IN; Fastener Length: 2.250 INCHES NOMINAL IN; Thread Class: 3A A. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-579-0478 still in active supply?

NSN 5305-00-579-0478 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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