PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

14243Screw,machine

Ametek, Inc. Dba Aerospace Gst Div Aerospace · NSN 5305-00-126-5123 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-126-5123 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-126-5123. Primary manufacturer part number: 14243.
Features
  • Screw,machine — FSC 5305
  • Thread Series Designator: UNF
  • Thread Length: 0.188 INCHES MAXIMUM IN
  • Head Height: 0.118 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
  • Screw Surface Treatment: PASSIVATE
  • Internal Drive Style: SLOT
  • Nominal Thread Diameter: 0.190 INCHES IN
  • Head Style: FILLISTER
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-00-126-5123, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Ametek, Inc. Dba Aerospace Gst Div Aerospace. Government technical data includes 14 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-126-5123
Primary Part Number14243
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerAmetek, Inc. Dba Aerospace Gst Div Aerospace
StatusACTIVE
Thread Series DesignatorUNF
Thread Length0.188 INCHES MAXIMUM IN
Head Height0.118 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
Screw Surface TreatmentPASSIVATE
Internal Drive StyleSLOT
Nominal Thread Diameter0.190 INCHES IN
Head StyleFILLISTER
Fastener Length0.188 INCHES NOMINAL IN
Thread Quantity Per Inch32
Screw Surface Treatment Document and ClassificationPS30.8,FSCM 72737 MFR REF SINGLE TREATMENT RESPONSE
Thread DirectionRIGHT-HAND
Head Diameter0.292 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
Thread Class2A A
Screw MaterialSTEEL CORROSION RESISTING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5950-00-007-5985 INTERCHANGEABLE
Reactor
6675-00-293-2930142/43 INTERCHANGEABLE
Clinometer,elevation
Taylor Hobson Inc
4810-00-601-1860 INTERCHANGEABLE
Sleeve and Slide,directional Con
5355-00-650-4622 INTERCHANGEABLE
Knob
5940-00-665-5764699408PT3 INTERCHANGEABLE
Terminal,stud
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5935-00-803-36001424-3 INTERCHANGEABLE
Connector,plug,electrical
Spectrum Control Inc Div Weinschel
5340-00-860-053310885456 INTERCHANGEABLE
Crank,hand
U S Army Tank Automotive Command Amsta-Im-Mm
2530-01-171-219714243 INTERCHANGEABLE
Brake Drum
Durametal Corp
Cross-Reference Index
Part NumberManufacturer
14243 PRIMARY Ametek, Inc. Dba Aerospace Gst Div Aerospace (USA)
14243 L3harris Interstate Electronics Corporation (USA)
Related Parts
5950-00-007-5985INTERCHANGEABLE
REACTOR
6675-00-293-2930INTERCHANGEABLE
CLINOMETER,ELEVATION
142/43
4810-00-601-1860INTERCHANGEABLE
SLEEVE AND SLIDE,DIRECTIONAL CON
5355-00-650-4622INTERCHANGEABLE
KNOB
5940-00-665-5764INTERCHANGEABLE
TERMINAL,STUD
699408PT3
5935-00-803-3600INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
1424-3
5340-00-860-0533INTERCHANGEABLE
CRANK,HAND
10885456
2530-01-171-2197INTERCHANGEABLE
BRAKE DRUM
14243

Frequently Asked Questions

What is NSN 5305-00-126-5123?

NSN 5305-00-126-5123 is a Screw,machine, manufactured by Ametek, Inc. Dba Aerospace Gst Div Aerospace, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-126-5123?

NSN 5305-00-126-5123 has 2 cross-referenced part numbers: 14243 (Ametek, Inc. Dba Aerospace Gst Div Aerospace), 14243 (L3harris Interstate Electronics Corporation).

What NSN replaces 5305-00-126-5123?

There are 8 known substitutes for 5305-00-126-5123: 5950-00-007-5985, 6675-00-293-2930, 4810-00-601-1860 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 14243?

Key specifications for 14243: Thread Series Designator: UNF; Thread Length: 0.188 INCHES MAXIMUM IN; Head Height: 0.118 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN; Screw Surface Treatment: PASSIVATE. 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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