PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8170045Screw,machine

Us Army Aviation and Missile Command · NSN 5305-00-144-3950 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-144-3950 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-144-3950. Primary manufacturer part number: 8170045.
Features
  • Screw,machine — FSC 5305
  • Head Diameter: 0.249 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN
  • Head Style: FLAT COUNTERSUNK
  • Screw Material: STEEL OR STEEL COMP 1010
  • Nominal Thread Diameter: 0.138 INCHES IN
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Departure From Cited Designator: AS MODIFIED BY INTERNAL DRIVE STYLE AND LOCATION
  • Fastener Length: 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 5305-00-144-3950, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Us Army Aviation and Missile Command. Government technical data includes 17 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-144-3950
Primary Part Number8170045
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerUs Army Aviation and Missile Command
StatusCANCELLED
Head Diameter0.249 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN
Head StyleFLAT COUNTERSUNK
Screw MaterialSTEEL OR STEEL COMP 1010
Nominal Thread Diameter0.138 INCHES IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Departure From Cited DesignatorAS MODIFIED BY INTERNAL DRIVE STYLE AND LOCATION
Fastener Length0.375 INCHES NOMINAL IN
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 DirectionRIGHT-HAND
Minimum Tensile Strength55000 POUNDS PER SQUARE INCH LBS
Screw Surface TreatmentCADMIUM
Thread Class2A A
Internal Drive StyleCROSS RECESS TYPE 1
Thread Quantity Per Inch32
Countersink Angle99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
Screw Surface Treatment Document and ClassificationQQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE
Thread Length0.313 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
2815-00-146-3018 INTERCHANGEABLE
Cylinder Head,diesel Engine
2040-00-388-0799M7421 INTERCHANGEABLE
Strut,vtype
Michigan Wheel Operations, Llc
7320-00-390-15215974 INTERCHANGEABLE
Plate,shredder
Middleby Marshall Inc Conveyor Ovens and Mixers Div
2805-00-422-616313S55 INTERCHANGEABLE
Ring Set,piston
Spirolox Inc
5325-00-720-8064 INTERCHANGEABLE
Ring,retaining
5305-00-957-7817414507 INTERCHANGEABLE
Screw,machine
Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company
6515-01-042-24865125 INTERCHANGEABLE
Thermometer,clinical,human
Medical Indicators Inc
6685-01-052-849505-400-0500-004 INTERCHANGEABLE
Bearing Thrust
Ge Ruska Instrument Corporation Div Ge Sensing Solutions Inc
2920-01-061-4968L74931 INTERCHANGEABLE
Regulator,engine Generator
Cnh Industrial America Llc Dba Cnh America
4930-01-169-5287GTP-3422-3 INTERCHANGEABLE
Probe Assy,water De
Gammon Technical Products Inc
Cross-Reference Index
Part NumberManufacturer
8170045 Us Army Aviation and Missile Command (USA)
10124996 Nimikkeistokeskus Ncb Finland (FIN)
FFS92TYPE3STYLE3C Federal Specifications Promulgated by General Services Administration Washington DC (USA)
AN507-632R6 Aeronautical Standards Group Dept of Navy and Air Force (USA)
5125 Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament (USA)
835125-00 Defense Reduction Agency (USA)
414 747 Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company (USA)
Related Parts
2815-00-146-3018INTERCHANGEABLE
CYLINDER HEAD,DIESEL ENGINE
2040-00-388-0799INTERCHANGEABLE
STRUT,VTYPE
M7421
7320-00-390-1521INTERCHANGEABLE
PLATE,SHREDDER
5974
2805-00-422-6163INTERCHANGEABLE
RING SET,PISTON
13S55
5325-00-720-8064INTERCHANGEABLE
RING,RETAINING
5305-00-957-7817INTERCHANGEABLE
SCREW,MACHINE
414507
6515-01-042-2486INTERCHANGEABLE
THERMOMETER,CLINICAL,HUMAN
5125
6685-01-052-8495INTERCHANGEABLE
BEARING THRUST
05-400-0500-004
2920-01-061-4968INTERCHANGEABLE
REGULATOR,ENGINE GENERATOR
L74931
4930-01-169-5287INTERCHANGEABLE
PROBE ASSY,WATER DE
GTP-3422-3
5365-01-210-4867INTERCHANGEABLE
SPACER,SLEEVE
5125
5330-01-303-3921INTERCHANGEABLE
SEAL,PLAIN ENCASED
4148

Frequently Asked Questions

What is NSN 5305-00-144-3950?

NSN 5305-00-144-3950 is a Screw,machine, manufactured by Us Army Aviation and Missile Command, classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-00-144-3950?

NSN 5305-00-144-3950 has 7 cross-referenced part numbers: 8170045 (Us Army Aviation and Missile Command), 10124996 (Nimikkeistokeskus Ncb Finland), FFS92TYPE3STYLE3C (Federal Specifications Promulgated by General Services Administration Washington DC), AN507-632R6 (Aeronautical Standards Group Dept of Navy and Air Force), 5125 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament) and 2 more.

What NSN replaces 5305-00-144-3950?

There are 12 known substitutes for 5305-00-144-3950: 2815-00-146-3018, 2040-00-388-0799, 7320-00-390-1521 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8170045?

Key specifications for 8170045: Head Diameter: 0.249 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN; Head Style: FLAT COUNTERSUNK; Screw Material: STEEL OR STEEL COMP 1010; Nominal Thread Diameter: 0.138 INCHES IN. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-144-3950 still in active supply?

NSN 5305-00-144-3950 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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