PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS24677-37Screw,cap,socket Head

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5305-00-273-5637 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-273-5637 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-273-5637. Primary manufacturer part number: MS24677-37.
Features
  • Screw,cap,socket Head — FSC 5305
  • Material: STEEL OVERALL
  • Nondefinitive Spec/std Data: 6 TYPE
  • Hole Configuration Style: ROUND INTERNAL HEXAGON
  • Thread Length: 0.870 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
  • Head Style: FLAT CHAMFER
  • Minimum Tensile Strength: 180000 POUNDS PER SQUARE INCH LBS
  • Width Across Flats: 0.1875 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-00-273-5637, 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 23 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 18 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-273-5637
Primary Part NumberMS24677-37
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusCANCELLED
MaterialSTEEL OVERALL
Nondefinitive Spec/std Data6 TYPE
Hole Configuration StyleROUND INTERNAL HEXAGON
Thread Length0.870 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
Head StyleFLAT CHAMFER
Minimum Tensile Strength180000 POUNDS PER SQUARE INCH LBS
Width Across Flats0.1875 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN
Minimum Yield Strength150000 POUNDS PER SQUARE INCH LBS
Hardness Rating38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Hole Diameter0.044 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
Head Height0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
Thread Quantity Per Inch20
Nominal Thread Diameter0.250 INCHES IN
Hole Quantity3
Thread DirectionRIGHT-HAND
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Head Diameter0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
Thread Class3A A
Surface Treatment Document and ClassificationQQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Fastener Length0.970 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
Hole TypeDRILLED
Internal Drive StyleHEXAGON
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
2920-00-293-52268F5899 INTERCHANGEABLE
Spark Plug
Caterpillar Inc Div Caterpillar Defense
5307-00-323-510555806 INTERCHANGEABLE
Stud,stepped
Rolls-Royce Corporation
5330-01-073-0197 INTERCHANGEABLE
Gasket
5935-01-295-2762 INTERCHANGEABLE
Connector Body,receptacle,electr
Cross-Reference Index
Part NumberManufacturer
5580-6 Eaton Aerospace, Llc Dba Jackson South (USA)
935064 Eaton Aerospace, Llc Dba Jackson South (USA)
MS24677-37 Makine Ve Kimya Endustrisi Anonim Sirketi Agir Silah Fabrikasi Subesi (TUR)
479044PC4 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
298235PC256 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
MS24677-37C National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
5305-273-5637 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
479183PC6 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
MS24677-37 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
69994-4-10C Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)
MS24677-37C Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
5305002735637 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
MS24677-37 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
935064 Eaton Aerospace, Llc Dba Jackson South (USA)
12Z1196-36 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
FF-S-86 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
0645-0420-16UDH Hamilton Sundstrand Corporation (USA)
479378PC4 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
2920-00-293-5226INTERCHANGEABLE
SPARK PLUG
8F5899
5307-00-323-5105INTERCHANGEABLE
STUD,STEPPED
55806
5330-01-073-0197INTERCHANGEABLE
GASKET
5935-01-295-2762INTERCHANGEABLE
CONNECTOR BODY,RECEPTACLE,ELECTR

Frequently Asked Questions

What is NSN 5305-00-273-5637?

NSN 5305-00-273-5637 is a Screw,cap,socket Head, 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 5305-00-273-5637?

NSN 5305-00-273-5637 has 18 cross-referenced part numbers: 5580-6 (Eaton Aerospace, Llc Dba Jackson South), 935064 (Eaton Aerospace, Llc Dba Jackson South), MS24677-37 (Makine Ve Kimya Endustrisi Anonim Sirketi Agir Silah Fabrikasi Subesi), 479044PC4 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 298235PC256 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier) and 13 more.

What NSN replaces 5305-00-273-5637?

There are 4 known substitutes for 5305-00-273-5637: 2920-00-293-5226, 5307-00-323-5105, 5330-01-073-0197 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS24677-37?

Key specifications for MS24677-37: Material: STEEL OVERALL; Nondefinitive Spec/std Data: 6 TYPE; Hole Configuration Style: ROUND INTERNAL HEXAGON; Thread Length: 0.870 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN. 23 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-273-5637 still in active supply?

NSN 5305-00-273-5637 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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