PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

15X263Screw,machine

Napco International Llc Dba Napco International Inc · NSN 5305-00-011-6225 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-011-6225 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-011-6225. Primary manufacturer part number: 15X263.
Features
  • Screw,machine — FSC 5305
  • Head Style: FLAT COUNTERSUNK
  • Countersink Angle: 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
  • Nominal Thread Diameter: 0.500 INCHES IN
  • Internal Drive Style: CROSS RECESS TYPE 1
  • Thread Length: 1.750 INCHES MINIMUM IN
  • Thread Quantity Per Inch: 13
  • Thread Class: 2A A
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-00-011-6225, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Napco International Llc Dba Napco International Inc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-011-6225
Primary Part Number15X263
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerNapco International Llc Dba Napco International Inc
StatusACTIVE
Head StyleFLAT COUNTERSUNK
Countersink Angle80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
Nominal Thread Diameter0.500 INCHES IN
Internal Drive StyleCROSS RECESS TYPE 1
Thread Length1.750 INCHES MINIMUM IN
Thread Quantity Per Inch13
Thread Class2A A
Screw Material Document and ClassificationSAE ASSN STD ALL MATERIAL RESPONSES
Thread DirectionRIGHT-HAND
Head Diameter0.775 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Fastener Length2.750 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5985-00-009-6749583Z4292 INTERCHANGEABLE
Waveguide Assembly
Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company
5330-00-179-0855R216-132-8 INTERCHANGEABLE
Seal,plain Encased
Trostel Albert Packing Ltd
2915-00-474-2375116225 INTERCHANGEABLE
Washer-C Type 1-4 O
Honeywell International Inc Div Aerospace-South Bend (bendix Dr)
4310-00-732-1113 INTERCHANGEABLE
Retainer Discharge
5340-01-441-5465 INTERCHANGEABLE
Bracket,mounting
Cross-Reference Index
Part NumberManufacturer
S905 Columbus Mckinnon Corp Cm Hoist Div (USA)
116225 General Motors Corp (USA)
15X263 PRIMARY Napco International Llc Dba Napco International Inc (USA)
116225 General Motors Llc Dba General Motors Llc (USA)
FFS92TYPE1STYLE2S Federal Specifications Promulgated by General Services Administration Washington DC (USA)
S905 Columbus Mckinnon Corp (USA)
116225 Army Weapons Command Attn Amswe-Ree-S (USA)
Related Parts
5985-00-009-6749INTERCHANGEABLE
WAVEGUIDE ASSEMBLY
583Z4292
5330-00-179-0855INTERCHANGEABLE
SEAL,PLAIN ENCASED
R216-132-8
2915-00-474-2375INTERCHANGEABLE
WASHER-C TYPE 1-4 O
116225
4310-00-732-1113INTERCHANGEABLE
RETAINER DISCHARGE
5340-01-441-5465INTERCHANGEABLE
BRACKET,MOUNTING

Frequently Asked Questions

What is NSN 5305-00-011-6225?

NSN 5305-00-011-6225 is a Screw,machine, manufactured by Napco International Llc Dba Napco International Inc, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-011-6225?

NSN 5305-00-011-6225 has 7 cross-referenced part numbers: S905 (Columbus Mckinnon Corp Cm Hoist Div), 116225 (General Motors Corp), 15X263 (Napco International Llc Dba Napco International Inc), 116225 (General Motors Llc Dba General Motors Llc), FFS92TYPE1STYLE2S (Federal Specifications Promulgated by General Services Administration Washington DC) and 2 more.

What NSN replaces 5305-00-011-6225?

There are 5 known substitutes for 5305-00-011-6225: 5985-00-009-6749, 5330-00-179-0855, 2915-00-474-2375 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 15X263?

Key specifications for 15X263: Head Style: FLAT COUNTERSUNK; Countersink Angle: 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM; Nominal Thread Diameter: 0.500 INCHES IN; Internal Drive Style: CROSS RECESS TYPE 1. 12 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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