PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NAS1801-3-6Screw,machine

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5305-01-078-2343 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-078-2343 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-078-2343. Primary manufacturer part number: NAS1801-3-6.
Features
  • Screw,machine — FSC 5305
  • Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
  • Thread Class: 3A A
  • Thread Quantity Per Inch: 32
  • Head Height: 0.105 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
  • Screw Surface Treatment: CADMIUM AND CHROMATE
  • Specification/standard Data: 80205-NAS1801 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Fastener Length: 0.359 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-01-078-2343, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-01-078-2343
Primary Part NumberNAS1801-3-6
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusCANCELLED
Hardness Rating36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
Thread Class3A A
Thread Quantity Per Inch32
Head Height0.105 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
Screw Surface TreatmentCADMIUM AND CHROMATE
Specification/standard Data80205-NAS1801 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Fastener Length0.359 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Width Between Flats0.305 INCHES MINIMUM AND 0.314 INCHES MAXIMUM IN
Screw Surface Treatment Document and ClassificationQQ-P-416,TYPE 2 CL2 FED SPEC SINGLE TREATMENT RESPONSE
Internal Drive StyleCROSS RECESS TYPE 1
Thread Length0.295 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN
Screw MaterialSTEEL COMP E4340 OR STEEL COMP 8740
Nominal Thread Diameter0.190 INCHES IN
Thread Series DesignatorUNIFIED NATIONAL JOINT FINE (UNJF)
Minimum Tensile Strength160000 POUNDS PER SQUARE INCH LBS
Head StyleHEXAGON
Screw Material Document and ClassificationMIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR AMS 6322 ASSN STD 2ND MATERIAL RESPONSE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5985-00-232-261910114974 INTERCHANGEABLE
Waveguide Assembly
Us Army Aviation and Missile Command
Cross-Reference Index
Part NumberManufacturer
5305PL2057859 Jednolity Indeks Materialowy - Uniform Material Index (POL)
NAS1801-3-6 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
BACS12CB3-6 The Boeing Company Div Defense (USA)
10114974 Nimikkeistokeskus Ncb Finland (FIN)
Related Parts
5985-00-232-2619INTERCHANGEABLE
WAVEGUIDE ASSEMBLY
10114974

Frequently Asked Questions

What is NSN 5305-01-078-2343?

NSN 5305-01-078-2343 is a Screw,machine, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-01-078-2343?

NSN 5305-01-078-2343 has 4 cross-referenced part numbers: 5305PL2057859 (Jednolity Indeks Materialowy - Uniform Material Index), NAS1801-3-6 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), BACS12CB3-6 (The Boeing Company Div Defense), 10114974 (Nimikkeistokeskus Ncb Finland).

What NSN replaces 5305-01-078-2343?

There is 1 known substitute for 5305-01-078-2343: 5985-00-232-2619. Verify interchangeability with system specifications before substitution.

What are the specifications of NAS1801-3-6?

Key specifications for NAS1801-3-6: Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM; Thread Class: 3A A; Thread Quantity Per Inch: 32; Head Height: 0.105 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-01-078-2343 still in active supply?

NSN 5305-01-078-2343 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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