PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS51959-34Screw,machine

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5305-00-765-4348 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-765-4348 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-765-4348. Primary manufacturer part number: MS51959-34.
Features
  • Screw,machine — FSC 5305
  • Head Diameter: 0.244 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN
  • Screw Surface Treatment: PASSIVATE
  • Minimum Tensile Strength: 80000 POUNDS PER SQUARE INCH LBS
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Screw Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES
  • Screw Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE
  • Countersink Angle: 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-00-765-4348, 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 16 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-765-4348
Primary Part NumberMS51959-34
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
Head Diameter0.244 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN
Screw Surface TreatmentPASSIVATE
Minimum Tensile Strength80000 POUNDS PER SQUARE INCH LBS
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Screw Material Document and Classification66 FED STD ALL MATERIAL RESPONSES
Screw Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE
Countersink Angle80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
Thread Quantity Per Inch32
Thread Length0.938 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
Internal Drive StyleCROSS RECESS TYPE 1
Thread Class2A A
Nominal Thread Diameter0.138 INCHES IN
Fastener Length1.000 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Screw MaterialSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316
Head StyleFLAT COUNTERSUNK
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
2915-00-397-553022250 INTERCHANGEABLE
Stop,solenoid Adjusting
Hydro-Aire Aerospace Corp
6645-00-449-2644 INTERCHANGEABLE
Wheel Assy-Fourth
4310-00-459-609522250 INTERCHANGEABLE
Filter,air
Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div
5935-00-883-74029975878 INTERCHANGEABLE
Cover,electrical Connector
Us Army Aviation and Missile Command
7530-01-025-127522250 INTERCHANGEABLE
Chart,recording Instrument
L3 Technologies, Inc. Div L3harris Edo Western Corporation
5998-01-327-774822250-104 INTERCHANGEABLE
Circuit Card Assembly
Fisica Applied Technologies, Inc. Div Datron Advanced Technologies
5110-01-358-520722250 INTERCHANGEABLE
Stripper,optical Fiber,hand
Norland Products Inc.
4320-01-441-731122250-2 INTERCHANGEABLE
Parts Kit,centrifugal Pump
Exceltec Intl Corp
6680-01-481-700022250-300 INTERCHANGEABLE
Cap,meter,flow Rate Indicating
Hydraulics International, Inc. Dba Hydraulics International Inc
1005-01-562-901422250 INTERCHANGEABLE
Rifle,7.62 Millimeter
Charles Reed Knight Jr Dba Knight's Armament Company
Cross-Reference Index
Part NumberManufacturer
22250 Federal Screw Products, Inc. (USA)
MS51959-34 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
342-0069-00 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
P342-0069-00 Allied Products Corp Pheoll Mfg Co Div (USA)
MS51959-34 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
245224 Sinclair Technologies Inc. (CAN)
22250ADX Airdale Express Llc Div Airdale Express (USA)
Related Parts
2915-00-397-5530INTERCHANGEABLE
STOP,SOLENOID ADJUSTING
22250
6645-00-449-2644INTERCHANGEABLE
WHEEL ASSY-FOURTH
4310-00-459-6095INTERCHANGEABLE
FILTER,AIR
22250
5935-00-883-7402INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
9975878
7530-01-025-1275INTERCHANGEABLE
CHART,RECORDING INSTRUMENT
22250
5998-01-327-7748INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
22250-104
5110-01-358-5207INTERCHANGEABLE
STRIPPER,OPTICAL FIBER,HAND
22250
4320-01-441-7311INTERCHANGEABLE
PARTS KIT,CENTRIFUGAL PUMP
22250-2
6680-01-481-7000INTERCHANGEABLE
CAP,METER,FLOW RATE INDICATING
22250-300
1005-01-562-9014INTERCHANGEABLE
RIFLE,7.62 MILLIMETER
22250
5110-01-645-1528INTERCHANGEABLE
DIE SET,METAL STAMPING,HAND

Frequently Asked Questions

What is NSN 5305-00-765-4348?

NSN 5305-00-765-4348 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 5305-00-765-4348?

NSN 5305-00-765-4348 has 7 cross-referenced part numbers: 22250 (Federal Screw Products, Inc.), MS51959-34 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 342-0069-00 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), P342-0069-00 (Allied Products Corp Pheoll Mfg Co Div), MS51959-34 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use) and 2 more.

What NSN replaces 5305-00-765-4348?

There are 11 known substitutes for 5305-00-765-4348: 2915-00-397-5530, 6645-00-449-2644, 4310-00-459-6095 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS51959-34?

Key specifications for MS51959-34: Head Diameter: 0.244 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN; Screw Surface Treatment: PASSIVATE; Minimum Tensile Strength: 80000 POUNDS PER SQUARE INCH LBS; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC). 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-765-4348 still in active supply?

NSN 5305-00-765-4348 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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