PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS51861-1CScrew,tapping

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5305-00-147-3222 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-147-3222 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-147-3222. Primary manufacturer part number: MS51861-1C.
Features
  • Screw,tapping — FSC 5305
  • Head Diameter: 0.155 INCHES MINIMUM AND 0.167 INCHES MAXIMUM IN
  • Surface Treatment: PASSIVATE OVERALL
  • Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Material: STEEL COMP 410 OVERALL
  • Nondefinitive Spec/std Data: AB TYPE
  • Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
  • Internal Drive Style: CROSS RECESS TYPE 1
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 410 Overall construction
General Description

The Screw,tapping, cataloged under National Stock Number 5305-00-147-3222, 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 5 commercial cross-references from 4 manufacturers, 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
NSN5305-00-147-3222
Primary Part NumberMS51861-1C
Item NameScrew,tapping
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusCANCELLED
Head Diameter0.155 INCHES MINIMUM AND 0.167 INCHES MAXIMUM IN
Surface TreatmentPASSIVATE OVERALL
Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MaterialSTEEL COMP 410 OVERALL
Nondefinitive Spec/std DataAB TYPE
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Internal Drive StyleCROSS RECESS TYPE 1
Head Height0.053 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN
Head StylePAN
Fastener Length0.157 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
Nonmachine Thread StyleGIMLET POINT (TYPE A, AB OR BA)
Nonmachine Nominal Thread Diameter0.086 INCHES IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5305-01-146-2533MS51861-1C INTERCHANGEABLE
Screw,tapping
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
MS24622-2 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS51861-1C PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
MS51861-1C Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
FFS107 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
10125001 Nimikkeistokeskus Ncb Finland (FIN)
Related Parts
5305-01-146-2533INTERCHANGEABLE
SCREW,TAPPING
MS51861-1C

Frequently Asked Questions

What is NSN 5305-00-147-3222?

NSN 5305-00-147-3222 is a Screw,tapping, 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 5305-00-147-3222?

NSN 5305-00-147-3222 has 5 cross-referenced part numbers: MS24622-2 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS51861-1C (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), MS51861-1C (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), FFS107 (Federal Specifications Promulgated by General Services Administration Washington DC), 10125001 (Nimikkeistokeskus Ncb Finland).

What NSN replaces 5305-00-147-3222?

There is 1 known substitute for 5305-00-147-3222: 5305-01-146-2533. Verify interchangeability with system specifications before substitution.

What are the specifications of MS51861-1C?

Key specifications for MS51861-1C: Head Diameter: 0.155 INCHES MINIMUM AND 0.167 INCHES MAXIMUM IN; Surface Treatment: PASSIVATE OVERALL; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Material: STEEL COMP 410 OVERALL. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-147-3222 still in active supply?

NSN 5305-00-147-3222 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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