PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS35458-23Screw,cap,socket Head

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5305-00-579-4635 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-579-4635 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-579-4635. Primary manufacturer part number: MS35458-23.
Features
  • Screw,cap,socket Head — FSC 5305
  • Thread Length: 0.750 INCHES NOMINAL IN
  • Width Across Flats: 0.187 INCHES MINIMUM AND 0.189 INCHES MAXIMUM IN
  • Thread Series Designator: UNF
  • Head Diameter: 0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
  • Minimum Yield Strength: 140000 POUNDS PER SQUARE INCH LBS
  • Head Height: 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
  • Thread Direction: RIGHT-HAND
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 5305-00-579-4635, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-579-4635
Primary Part NumberMS35458-23
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Thread Length0.750 INCHES NOMINAL IN
Width Across Flats0.187 INCHES MINIMUM AND 0.189 INCHES MAXIMUM IN
Thread Series DesignatorUNF
Head Diameter0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
Minimum Yield Strength140000 POUNDS PER SQUARE INCH LBS
Head Height0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Hardness Rating36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
Surface TreatmentCADMIUM OR ZINC OVERALL
Fastener Length0.750 INCHES NOMINAL IN
Thread Quantity Per Inch28
Nominal Thread Diameter0.250 INCHES IN
Thread Class3A A
MaterialSTEEL OVERALL
Internal Drive StyleHEXAGON
Head StyleFLAT CHAMFER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5305-00-983-6660 INTERCHANGEABLE
Screw,cap,socket Head
Cross-Reference Index
Part NumberManufacturer
MS35458-23 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5305-00-983-6660INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD

Frequently Asked Questions

What is NSN 5305-00-579-4635?

NSN 5305-00-579-4635 is a Screw,cap,socket Head, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-579-4635?

NSN 5305-00-579-4635 has 1 cross-referenced part number: MS35458-23 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5305-00-579-4635?

There is 1 known substitute for 5305-00-579-4635: 5305-00-983-6660. Verify interchangeability with system specifications before substitution.

What are the specifications of MS35458-23?

Key specifications for MS35458-23: Thread Length: 0.750 INCHES NOMINAL IN; Width Across Flats: 0.187 INCHES MINIMUM AND 0.189 INCHES MAXIMUM IN; Thread Series Designator: UNF; Head Diameter: 0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN. 16 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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