PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS51959-50Screw,machine

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5305-01-597-3577 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-597-3577 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-597-3577. Primary manufacturer part number: MS51959-50.
Features
  • Screw,machine — FSC 5305
  • Thread Class: 2A A
  • Head Style: FLAT COUNTERSUNK
  • Fastener Length: 1.250 INCHES NOMINAL IN
  • Screw Material: STEEL CORROSION RESISTING
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Thread Quantity Per Inch: 32
  • Thread Direction: RIGHT-HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-01-597-3577, 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 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, 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
NSN5305-01-597-3577
Primary Part NumberMS51959-50
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
StatusACTIVE
Thread Class2A A
Head StyleFLAT COUNTERSUNK
Fastener Length1.250 INCHES NOMINAL IN
Screw MaterialSTEEL CORROSION RESISTING
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Thread Quantity Per Inch32
Thread DirectionRIGHT-HAND
Countersink Angle80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
Head Diameter0.306 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN
Thread Length1.150 INCHES NOMINAL IN
Internal Drive StyleCROSS RECESS TYPE II
Nominal Thread Diameter0.138 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5305-00-455-2516 INTERCHANGEABLE
Screw,machine
5305-00-701-5074MS51959-63 INTERCHANGEABLE
Screw,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5305-00-719-5017MS51959-82 INTERCHANGEABLE
Screw,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5305-00-723-9423 INTERCHANGEABLE
Screw,machine
5305-01-201-9024 INTERCHANGEABLE
Screw,machine
Cross-Reference Index
Part NumberManufacturer
MS51959-50 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
NASM51959 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
NASM51959-50 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
Related Parts
5305-00-455-2516INTERCHANGEABLE
SCREW,MACHINE
5305-00-701-5074INTERCHANGEABLE
SCREW,MACHINE
MS51959-63
5305-00-719-5017INTERCHANGEABLE
SCREW,MACHINE
MS51959-82
5305-00-723-9423INTERCHANGEABLE
SCREW,MACHINE
5305-01-201-9024INTERCHANGEABLE
SCREW,MACHINE

Frequently Asked Questions

What is NSN 5305-01-597-3577?

NSN 5305-01-597-3577 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: active.

What are the part numbers for NSN 5305-01-597-3577?

NSN 5305-01-597-3577 has 3 cross-referenced part numbers: MS51959-50 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), NASM51959 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), NASM51959-50 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use).

What NSN replaces 5305-01-597-3577?

There are 5 known substitutes for 5305-01-597-3577: 5305-00-455-2516, 5305-00-701-5074, 5305-00-719-5017 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS51959-50?

Key specifications for MS51959-50: Thread Class: 2A A; Head Style: FLAT COUNTERSUNK; Fastener Length: 1.250 INCHES NOMINAL IN; Screw Material: STEEL CORROSION RESISTING. 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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