PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS24671-78Screw,cap,socket Head

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5305-00-849-2853 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-849-2853 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-849-2853. Primary manufacturer part number: MS24671-78.
Features
  • Screw,cap,socket Head — FSC 5305
  • Width Across Flats: 0.312 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
  • Thread Quantity Per Inch: 13
  • Head Diameter: 0.872 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
  • Head Style: FLAT COUNTERSUNK
  • Countersink Angle: 82.0 DEGREES NOMINAL
  • Surface Finish: 125.0 MICROINCHES OVERALL
  • Material: STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 384 OR STEEL COMP XM-7 OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 302 or Steel Comp 304 or Steel Comp 305 or Steel Comp 316 or Steel Comp 384 or Steel Comp Xm-7 Overall construction
General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-00-849-2853, 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 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-849-2853
Primary Part NumberMS24671-78
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
Width Across Flats0.312 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
Thread Quantity Per Inch13
Head Diameter0.872 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
Head StyleFLAT COUNTERSUNK
Countersink Angle82.0 DEGREES NOMINAL
Surface Finish125.0 MICROINCHES OVERALL
MaterialSTEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 384 OR STEEL COMP XM-7 OVERALL
Hardness Rating80.0 ROCKWELL B MINIMUM OVERALL
Minimum Yield Strength30000 POUNDS PER SQUARE INCH LBS
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Internal Drive StyleHEXAGON
Thread Length1.500 INCHES MINIMUM IN
Fastener Length2.000 INCHES NOMINAL IN
Thread Class3A A
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Thread DirectionRIGHT-HAND
Nondefinitive Spec/std DataTY4 TYPE
Minimum Tensile Strength80000 POUNDS PER SQUARE INCH LBS
Nominal Thread Diameter0.500 INCHES IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
5305-00-900-182951480 INTERCHANGEABLE
Screw,cap,socket Head
Parker Hannifin Corporation Div Hydraulic Systems Division
5305-01-145-5306 INTERCHANGEABLE
Screw,cap,socket Head
5305-01-264-1467 INTERCHANGEABLE
Screw,cap,socket Head
5305-01-324-88600.750-10UNC-3A2.250 LG INTERCHANGEABLE
Screw,cap,socket Head
The American Society of Mechanical Engineers
5305-01-332-21671/4-20UNC-3A 1 LG INTERCHANGEABLE
Screw,cap,socket Head
The American Society of Mechanical Engineers
5305-01-336-0051 INTERCHANGEABLE
Screw,cap,socket Head
5305-01-548-79087094234-4 INTERCHANGEABLE
Screw,cap,socket Head
Naval Sea Systems Command
Cross-Reference Index
Part NumberManufacturer
NASM24671-78 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
MS24671-78 Zf Industrieantriebe Witten Gmbh (DEU)
FF-S-86 TYPE IV Federal Specifications Promulgated by General Services Administration Washington DC (USA)
MS24671-78 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
FFS86 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5305-00-900-1829INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
51480
5305-01-145-5306INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-264-1467INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-324-8860INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
0.750-10UNC-3A2.250 LG
5305-01-332-2167INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
1/4-20UNC-3A 1 LG
5305-01-336-0051INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-548-7908INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
7094234-4

Frequently Asked Questions

What is NSN 5305-00-849-2853?

NSN 5305-00-849-2853 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 5305-00-849-2853?

NSN 5305-00-849-2853 has 5 cross-referenced part numbers: NASM24671-78 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), MS24671-78 (Zf Industrieantriebe Witten Gmbh), FF-S-86 TYPE IV (Federal Specifications Promulgated by General Services Administration Washington DC), MS24671-78 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), FFS86 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5305-00-849-2853?

There are 7 known substitutes for 5305-00-849-2853: 5305-00-900-1829, 5305-01-145-5306, 5305-01-264-1467 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS24671-78?

Key specifications for MS24671-78: Width Across Flats: 0.312 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN; Thread Quantity Per Inch: 13; Head Diameter: 0.872 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN; Head Style: FLAT COUNTERSUNK. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-849-2853 still in active supply?

NSN 5305-00-849-2853 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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