PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AN520-4-6Screw,machine

Aeronautical Standards Group Dept of Navy and Air Force · NSN 5305-00-151-0259 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-151-0259 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-151-0259. Primary manufacturer part number: AN520-4-6.
Features
  • Screw,machine — FSC 5305
  • Head Diameter: 0.193 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
  • Thread Series Designator: UNF
  • Minimum Tensile Strength: 55000 POUNDS PER SQUARE INCH LBS
  • Screw Surface Treatment Document and Classification: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE
  • Head Style: ROUND
  • Fastener Length: 0.375 INCHES NOMINAL IN
  • Screw Surface Treatment: CADMIUM
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-00-151-0259, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Aeronautical Standards Group Dept of Navy and Air Force. Government technical data includes 15 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
NSN5305-00-151-0259
Primary Part NumberAN520-4-6
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerAeronautical Standards Group Dept of Navy and Air Force
StatusACTIVE
Head Diameter0.193 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
Thread Series DesignatorUNF
Minimum Tensile Strength55000 POUNDS PER SQUARE INCH LBS
Screw Surface Treatment Document and ClassificationQQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE
Head StyleROUND
Fastener Length0.375 INCHES NOMINAL IN
Screw Surface TreatmentCADMIUM
Internal Drive StyleCROSS RECESS TYPE 1
Head Height0.086 INCHES MAXIMUM IN
Nominal Thread Diameter0.112 INCHES IN
Screw MaterialSTEEL OR STEEL COMP 1010
Thread Quantity Per Inch48
Screw Material Document and ClassificationQQ-S-630 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-631 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-634 FED SPEC 2ND MATERIAL RESPONSE
Thread Class2A A
Thread Length0.333 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5305-00-141-5164 INTERCHANGEABLE
Screw,machine
5305-00-151-0172 INTERCHANGEABLE
Screw,machine
5305-00-151-0265 INTERCHANGEABLE
Screw,machine
5305-00-151-0470 INTERCHANGEABLE
Screw,machine
5305-00-151-0472 INTERCHANGEABLE
Screw,machine
5305-00-151-1376 INTERCHANGEABLE
Screw,machine
5305-00-151-1568 INTERCHANGEABLE
Screw,machine
5305-00-151-3576 INTERCHANGEABLE
Screw,machine
5305-00-151-3578 INTERCHANGEABLE
Screw,machine
5305-00-151-3757 INTERCHANGEABLE
Screw,machine
Cross-Reference Index
Part NumberManufacturer
AN520-4-6 Aeronautical Standards Group Dept of Navy and Air Force (USA)
FFS92ANDTYPE1ANDSTYLE1 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5305-00-141-5164INTERCHANGEABLE
SCREW,MACHINE
5305-00-151-0172INTERCHANGEABLE
SCREW,MACHINE
5305-00-151-0265INTERCHANGEABLE
SCREW,MACHINE
5305-00-151-0470INTERCHANGEABLE
SCREW,MACHINE
5305-00-151-0472INTERCHANGEABLE
SCREW,MACHINE
5305-00-151-1376INTERCHANGEABLE
SCREW,MACHINE
5305-00-151-1568INTERCHANGEABLE
SCREW,MACHINE
5305-00-151-3576INTERCHANGEABLE
SCREW,MACHINE
5305-00-151-3578INTERCHANGEABLE
SCREW,MACHINE
5305-00-151-3757INTERCHANGEABLE
SCREW,MACHINE
5305-00-151-3776INTERCHANGEABLE
SCREW,MACHINE
5305-00-151-3781INTERCHANGEABLE
SCREW,MACHINE

Frequently Asked Questions

What is NSN 5305-00-151-0259?

NSN 5305-00-151-0259 is a Screw,machine, manufactured by Aeronautical Standards Group Dept of Navy and Air Force, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-151-0259?

NSN 5305-00-151-0259 has 2 cross-referenced part numbers: AN520-4-6 (Aeronautical Standards Group Dept of Navy and Air Force), FFS92ANDTYPE1ANDSTYLE1 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5305-00-151-0259?

There are 12 known substitutes for 5305-00-151-0259: 5305-00-141-5164, 5305-00-151-0172, 5305-00-151-0265 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AN520-4-6?

Key specifications for AN520-4-6: Head Diameter: 0.193 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN; Thread Series Designator: UNF; Minimum Tensile Strength: 55000 POUNDS PER SQUARE INCH LBS; Screw Surface Treatment Document and Classification: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE. 15 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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