PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1-1Screw,machine

Seaman-Parsons Corp · NSN 5305-00-543-2224 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-543-2224 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-543-2224. Primary manufacturer part number: 1-1.
Features
  • Screw,machine — FSC 5305
  • Thread Class: 2A A
  • Screw Material Document and Classification: QQ-W-409 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE
  • Head Height: 0.130 INCHES MINIMUM AND 0.144 INCHES MAXIMUM IN
  • Thread Quantity Per Inch: 20
  • Head Diameter: 0.473 INCHES MINIMUM AND 0.492 INCHES MAXIMUM IN
  • Internal Drive Style: SLOT
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-00-543-2224, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Seaman-Parsons Corp. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-543-2224
Primary Part Number1-1
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerSeaman-Parsons Corp
StatusACTIVE
Thread Class2A A
Screw Material Document and ClassificationQQ-W-409 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE
Head Height0.130 INCHES MINIMUM AND 0.144 INCHES MAXIMUM IN
Thread Quantity Per Inch20
Head Diameter0.473 INCHES MINIMUM AND 0.492 INCHES MAXIMUM IN
Internal Drive StyleSLOT
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Thread Length0.500 INCHES MINIMUM IN
Nominal Thread Diameter0.250 INCHES IN
Screw MaterialSTEEL
Fastener Length0.500 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Minimum Tensile Strength55000 POUNDS PER SQUARE INCH LBS
Head StylePAN NO. 2
Screw Surface TreatmentCADMIUM AND CHROMATE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5305-00-988-1723MS35206-279 INTERCHANGEABLE
Screw,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
1-1 Seaman-Parsons Corp (USA)
MS35223-79 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
10X705 Meritor Heavy Vehicle Systems, Llc (USA)
Related Parts
5305-00-988-1723INTERCHANGEABLE
SCREW,MACHINE
MS35206-279

Frequently Asked Questions

What is NSN 5305-00-543-2224?

NSN 5305-00-543-2224 is a Screw,machine, manufactured by Seaman-Parsons Corp, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-543-2224?

NSN 5305-00-543-2224 has 3 cross-referenced part numbers: 1-1 (Seaman-Parsons Corp), MS35223-79 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 10X705 (Meritor Heavy Vehicle Systems, Llc).

What NSN replaces 5305-00-543-2224?

There is 1 known substitute for 5305-00-543-2224: 5305-00-988-1723. Verify interchangeability with system specifications before substitution.

What are the specifications of 1-1?

Key specifications for 1-1: Thread Class: 2A A; Screw Material Document and Classification: QQ-W-409 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE; Head Height: 0.130 INCHES MINIMUM AND 0.144 INCHES MAXIMUM IN; Thread Quantity Per Inch: 20. 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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