PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6263Screw,machine

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 5305-00-147-6514 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-147-6514 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-147-6514. Primary manufacturer part number: 6263.
Features
  • Screw,machine — FSC 5305
  • Hole Diameter: 0.062 INCHES NOMINAL IN
  • Thread Direction: RIGHT-HAND
  • Thread Class: 3A A
  • Screw Surface Treatment: CADMIUM
  • Nominal Thread Diameter: 0.250 INCHES IN
  • Internal Drive Style: CROSS RECESS TYPE 1
  • Head Diameter: 0.375 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-00-147-6514, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 16 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: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-147-6514
Primary Part Number6263
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusCANCELLED
Hole Diameter0.062 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Thread Class3A A
Screw Surface TreatmentCADMIUM
Nominal Thread Diameter0.250 INCHES IN
Internal Drive StyleCROSS RECESS TYPE 1
Head Diameter0.375 INCHES NOMINAL IN
Fastener Length0.438 INCHES NOMINAL IN
Thread Length0.375 INCHES MINIMUM IN
Head StyleFLAT CHAMFER
Head Height0.250 INCHES NOMINAL IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Hole Quantity2
Head Hole Configuration StyleROUND
Screw MaterialSTEEL COMP 6150 OR STEEL COMP 4640
Thread Quantity Per Inch20
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3110-00-100-03683324 INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
5910-00-248-8989 INTERCHANGEABLE
Capacitor,variable,mica Dielectr
5960-00-274-4183 INTERCHANGEABLE
Electron Tube
4820-00-287-33256263N INTERCHANGEABLE
Valve,globe
Henry Technologies, Inc.
4940-00-360-07176263 INTERCHANGEABLE
Cap,protective
Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
5960-00-583-4843 INTERCHANGEABLE
Electron Tube
3040-00-696-6166A6263 INTERCHANGEABLE
Gearshaft,spur
Aerocontrolex Group, Inc. Div Talley Actuators
5985-00-965-63189072258 INTERCHANGEABLE
Attenuator,fixed
Us Army Aviation and Missile Command
5950-01-136-655716610065-002 INTERCHANGEABLE
Coil,radio Frequency
Sypris Electronics, Llc Div Sypris Electronics, Llc - Colorado Field Services
6350-01-342-0655 INTERCHANGEABLE
Control,alarm
Cross-Reference Index
Part NumberManufacturer
6263 Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN)
6263 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
Related Parts
3110-00-100-0368INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
3324
5910-00-248-8989INTERCHANGEABLE
CAPACITOR,VARIABLE,MICA DIELECTR
5960-00-274-4183INTERCHANGEABLE
ELECTRON TUBE
4820-00-287-3325INTERCHANGEABLE
VALVE,GLOBE
6263N
4940-00-360-0717INTERCHANGEABLE
CAP,PROTECTIVE
6263
5960-00-583-4843INTERCHANGEABLE
ELECTRON TUBE
3040-00-696-6166INTERCHANGEABLE
GEARSHAFT,SPUR
A6263
5985-00-965-6318INTERCHANGEABLE
ATTENUATOR,FIXED
9072258
5950-01-136-6557INTERCHANGEABLE
COIL,RADIO FREQUENCY
16610065-002
6350-01-342-0655INTERCHANGEABLE
CONTROL,ALARM
3433-01-352-7326INTERCHANGEABLE
INSULATOR,NOZZLE SHIELD
2940-01-414-7692INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
46263

Frequently Asked Questions

What is NSN 5305-00-147-6514?

NSN 5305-00-147-6514 is a Screw,machine, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-00-147-6514?

NSN 5305-00-147-6514 has 2 cross-referenced part numbers: 6263 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.), 6263 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).

What NSN replaces 5305-00-147-6514?

There are 12 known substitutes for 5305-00-147-6514: 3110-00-100-0368, 5910-00-248-8989, 5960-00-274-4183 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6263?

Key specifications for 6263: Hole Diameter: 0.062 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND; Thread Class: 3A A; Screw Surface Treatment: CADMIUM. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-147-6514 still in active supply?

NSN 5305-00-147-6514 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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