PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS51957-26Screw,machine

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5305-01-551-4436 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-551-4436 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-551-4436. Primary manufacturer part number: MS51957-26.
Features
  • Screw,machine — FSC 5305
  • Screw Surface Treatment: ZINC NICKEL AND PASSIVATE
  • Thread Class: 2A A
  • Fastener Length: 0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
  • Thread Direction: RIGHT-HAND
  • Screw Material: STEEL CORROSION RESISTING
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Thread Quantity Per Inch: 32
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-01-551-4436, 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 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-551-4436
Primary Part NumberMS51957-26
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
Screw Surface TreatmentZINC NICKEL AND PASSIVATE
Thread Class2A A
Fastener Length0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Screw MaterialSTEEL CORROSION RESISTING
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Thread Quantity Per Inch32
Head StylePAN
Surface Treatment Document and ClassificationSAE-AMS2700 ASSN STD SINGLE TREATMENT RESPONSE
Surface TreatmentZINC NICKEL AND PASSIVATE
Nominal Thread Diameter0.138 INCHES IN
Minimum Tensile Strength730 POUNDS PER SQUARE INCH LBS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5305-00-054-6650 INTERCHANGEABLE
Screw,machine
5305-00-402-2666 INTERCHANGEABLE
Screw,machine
Cross-Reference Index
Part NumberManufacturer
MS51957-26 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
352250019084 Thales Nederland (NLD)
Related Parts
5305-00-054-6650INTERCHANGEABLE
SCREW,MACHINE
5305-00-402-2666INTERCHANGEABLE
SCREW,MACHINE

Frequently Asked Questions

What is NSN 5305-01-551-4436?

NSN 5305-01-551-4436 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 5305-01-551-4436?

NSN 5305-01-551-4436 has 2 cross-referenced part numbers: MS51957-26 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), 352250019084 (Thales Nederland).

What NSN replaces 5305-01-551-4436?

There are 2 known substitutes for 5305-01-551-4436: 5305-00-054-6650, 5305-00-402-2666. Verify interchangeability with system specifications before substitution.

What are the specifications of MS51957-26?

Key specifications for MS51957-26: Screw Surface Treatment: ZINC NICKEL AND PASSIVATE; Thread Class: 2A A; Fastener Length: 0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Thread Direction: RIGHT-HAND. 13 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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