PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS51861-45CScrew,tapping

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5305-00-147-3238 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-147-3238 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-147-3238. Primary manufacturer part number: MS51861-45C.
Features
  • Screw,tapping — FSC 5305
  • Head Diameter: 0.357 INCHES MINIMUM AND 0.373 INCHES MAXIMUM IN
  • Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Nondefinitive Spec/std Data: AB TYPE
  • Material: STEEL COMP 410 OVERALL
  • Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
  • Surface Treatment: PASSIVATE OVERALL
  • Nonmachine Nominal Thread Diameter: 0.190 INCHES IN
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 5305-00-147-3238, 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 8 commercial cross-references from 6 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
NSN5305-00-147-3238
Primary Part NumberMS51861-45C
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 Diameter0.357 INCHES MINIMUM AND 0.373 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Nondefinitive Spec/std DataAB TYPE
MaterialSTEEL COMP 410 OVERALL
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Surface TreatmentPASSIVATE OVERALL
Nonmachine Nominal Thread Diameter0.190 INCHES IN
Fastener Length0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
Nonmachine Thread StyleGIMLET POINT (TYPE A, AB OR BA)
Head StylePAN
Head Height0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN
Internal Drive StyleCROSS RECESS TYPE 1
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
4820-00-352-187910125002 INTERCHANGEABLE
Valve,check
Fwd Seagrave Holdings Lp
Cross-Reference Index
Part NumberManufacturer
103A10026-01 Parker Hannifin Corp Dba Pneutronics (USA)
MS51861-45C PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
MS51861-45C Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS24638-34 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS24618-40 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)
MS51861-45C Century Fasteners Corp (USA)
10125002 Nimikkeistokeskus Ncb Finland (FIN)
Related Parts
4820-00-352-1879INTERCHANGEABLE
VALVE,CHECK
10125002

Frequently Asked Questions

What is NSN 5305-00-147-3238?

NSN 5305-00-147-3238 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 5305-00-147-3238?

NSN 5305-00-147-3238 has 8 cross-referenced part numbers: 103A10026-01 (Parker Hannifin Corp Dba Pneutronics), MS51861-45C (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), MS51861-45C (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS24638-34 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS24618-40 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M) and 3 more.

What NSN replaces 5305-00-147-3238?

There is 1 known substitute for 5305-00-147-3238: 4820-00-352-1879. Verify interchangeability with system specifications before substitution.

What are the specifications of MS51861-45C?

Key specifications for MS51861-45C: End Item Identification: W/S: SPRUANCE CLASS DD (963); ARLEIGH BURKE CLASS DDG; SUPPORT EQUIP, C-17A AIRCRAFT; CONSOLIDATED SPACE OPERATIONS CENTER; AN/SQQ-89 SURFACE SHIP ASW COMBAT SYSTEM; SUPPORT EQUIPMENT, B-52 AIRCRAFT; ARMORED SECURITY VEHICLE, MODLE XM1117; LOW ALTITUDE NAVIGATION & TARGETING INFRARED SYSTEM (LANTIRN); TRUCK, FIRE/CRASH P10 A; Head Diameter: 0.357 INCHES MINIMUM AND 0.373 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Nondefinitive Spec/std Data: AB TYPE. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-147-3238 still in active supply?

NSN 5305-00-147-3238 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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