PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NAS221-18Screw,machine

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5305-00-282-4199 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-282-4199 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-282-4199. Primary manufacturer part number: NAS221-18.
Features
  • Screw,machine — FSC 5305
  • Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
  • Screw Surface Treatment: CADMIUM
  • Nominal Thread Diameter: 0.190 INCHES IN
  • Thread Quantity Per Inch: 32
  • Thread Class: 3A A
  • Thread Series Designator: UNF
  • Fastener Length: 1.141 INCHES MINIMUM AND 1.188 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-00-282-4199, 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 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-282-4199
Primary Part NumberNAS221-18
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
StatusCANCELLED
Hardness Rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
Screw Surface TreatmentCADMIUM
Nominal Thread Diameter0.190 INCHES IN
Thread Quantity Per Inch32
Thread Class3A A
Thread Series DesignatorUNF
Fastener Length1.141 INCHES MINIMUM AND 1.188 INCHES MAXIMUM IN
Internal Drive StyleCROSS RECESS TYPE 1
Thread Length0.376 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Head Height0.103 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN
Minimum Tensile Strength125000 POUNDS PER SQUARE INCH LBS
Screw Material Document and ClassificationMIL-S-6050 MIL SPEC SINGLE MATERIAL RESPONSE OR AN-S-9 MIL STD SINGLE MATERIAL RESPONSE
Screw MaterialSTEEL COMP 8630
Head Diameter0.361 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
Screw Surface Treatment Document and ClassificationQQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE
Head StyleROUND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5305-00-914-9000MS27039-1-18 INTERCHANGEABLE
Screw,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
NAS221-18 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
Related Parts
5305-00-914-9000INTERCHANGEABLE
SCREW,MACHINE
MS27039-1-18

Frequently Asked Questions

What is NSN 5305-00-282-4199?

NSN 5305-00-282-4199 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: cancelled.

What are the part numbers for NSN 5305-00-282-4199?

NSN 5305-00-282-4199 has 1 cross-referenced part number: NAS221-18 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use).

What NSN replaces 5305-00-282-4199?

There is 1 known substitute for 5305-00-282-4199: 5305-00-914-9000. Verify interchangeability with system specifications before substitution.

What are the specifications of NAS221-18?

Key specifications for NAS221-18: Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM; Screw Surface Treatment: CADMIUM; Nominal Thread Diameter: 0.190 INCHES IN; Thread Quantity Per Inch: 32. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-282-4199 still in active supply?

NSN 5305-00-282-4199 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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