PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS51861-24Screw,tapping

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5305-00-432-4163 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-432-4163 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-432-4163. Primary manufacturer part number: MS51861-24.
Features
  • Screw,tapping — FSC 5305
  • Nonmachine Thread Style: GIMLET POINT (TYPE A, AB OR BA)
  • Nondefinitive Spec/std Data: AB TYPE
  • Head Style: PAN
  • Fastener Length: 0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
  • Internal Drive Style: CROSS RECESS TYPE 1
  • Head Diameter: 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
  • Surface Treatment: CADMIUM AND CHROMATE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,tapping, cataloged under National Stock Number 5305-00-432-4163, 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 13 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-432-4163
Primary Part NumberMS51861-24
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
Nonmachine Thread StyleGIMLET POINT (TYPE A, AB OR BA)
Nondefinitive Spec/std DataAB TYPE
Head StylePAN
Fastener Length0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
Internal Drive StyleCROSS RECESS TYPE 1
Head Diameter0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Surface Treatment Document and ClassificationQQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MaterialSTEEL OVERALL
Head Height0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN
Nonmachine Nominal Thread Diameter0.138 INCHES IN
Features ProvidedCASEHARDENED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
5305-00-053-1118 INTERCHANGEABLE
Screw,tapping
5133-00-189-9260 INTERCHANGEABLE
Drill,twist
5330-00-239-7987200115 INTERCHANGEABLE
Gasket
Admiral Filter Company Llc
5950-00-247-8984240-2677-060 INTERCHANGEABLE
Coil,radio Frequency
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5306-00-350-3940200115 INTERCHANGEABLE
Bolt,machine
Renk America Llc Div Renk America
5905-00-834-05582100-0178 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
Keysight Technologies Inc
5305-00-969-6914 INTERCHANGEABLE
Screw,tapping
5998-00-975-4879 INTERCHANGEABLE
Printed Circuit Board
5999-01-160-1418200635-G1 INTERCHANGEABLE
Bottle,receiver
Telectro-Mek Inc
5360-01-333-2670200-1-1-15 INTERCHANGEABLE
Spring,helical,compression
Myat, Inc. Dba Myat Inc
Cross-Reference Index
Part NumberManufacturer
ACA-1639 Oro Manufacturing Co (USA)
210231 California Instruments Corp (USA)
6X3/8 INLG(R) L a Benson Company Incorporated, the (USA)
MS24617-10 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
M524641-24 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
5305PL0927127 Jednolity Indeks Materialowy - Uniform Material Index (POL)
PK85XA6-6-1 Usm Corp Sub of Emhart Industries Inc Parker-Kalon Fastener Div (USA)
330-0654-000 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
FFS107 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
200115 Austin-Westran Llc (USA)
MS51861-24 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS24621-17 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS51861-24 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
Related Parts
5305-00-053-1118INTERCHANGEABLE
SCREW,TAPPING
5133-00-189-9260INTERCHANGEABLE
DRILL,TWIST
5330-00-239-7987INTERCHANGEABLE
GASKET
200115
5950-00-247-8984INTERCHANGEABLE
COIL,RADIO FREQUENCY
240-2677-060
5306-00-350-3940INTERCHANGEABLE
BOLT,MACHINE
200115
5905-00-834-0558INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
2100-0178
5305-00-969-6914INTERCHANGEABLE
SCREW,TAPPING
5998-00-975-4879INTERCHANGEABLE
PRINTED CIRCUIT BOARD
5999-01-160-1418INTERCHANGEABLE
BOTTLE,RECEIVER
200635-G1
5360-01-333-2670INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
200-1-1-15
5340-01-600-1804INTERCHANGEABLE
CLEVIS,ROD END
20011-5

Frequently Asked Questions

What is NSN 5305-00-432-4163?

NSN 5305-00-432-4163 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 5305-00-432-4163?

NSN 5305-00-432-4163 has 13 cross-referenced part numbers: ACA-1639 (Oro Manufacturing Co), 210231 (California Instruments Corp), 6X3/8 INLG(R) (L a Benson Company Incorporated, the), MS24617-10 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), M524641-24 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M) and 8 more.

What NSN replaces 5305-00-432-4163?

There are 11 known substitutes for 5305-00-432-4163: 5305-00-053-1118, 5133-00-189-9260, 5330-00-239-7987 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS51861-24?

Key specifications for MS51861-24: Nonmachine Thread Style: GIMLET POINT (TYPE A, AB OR BA); Nondefinitive Spec/std Data: AB TYPE; Head Style: PAN; Fastener Length: 0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-432-4163 still in active supply?

NSN 5305-00-432-4163 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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