PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS35290-70Screw,cap,hexagon Head

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5305-00-266-6348 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-266-6348 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-266-6348. Primary manufacturer part number: MS35290-70.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Head Height: 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
  • Thread Quantity Per Inch: 24
  • Material: STEEL OVERALL
  • Thread Series Designator: UNF
  • Nondefinitive Spec/std Data: 2 TYPE AND 10P STYLE AND 2 GRADE
  • Thread Length: 1.000 INCHES MINIMUM IN
  • Thread Class: 2A A
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-266-6348, 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 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-266-6348
Primary Part NumberMS35290-70
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Head Height0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
Thread Quantity Per Inch24
MaterialSTEEL OVERALL
Thread Series DesignatorUNF
Nondefinitive Spec/std Data2 TYPE AND 10P STYLE AND 2 GRADE
Thread Length1.000 INCHES MINIMUM IN
Thread Class2A A
Hardness Rating100.0 ROCKWELL B MAXIMUM OVERALL
Width Between Flats0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
Fastener Length3.000 INCHES NOMINAL IN
Head StyleHEXAGON
Nominal Thread Diameter0.375 INCHES IN
Thread DirectionRIGHT-HAND
Minimum Tensile Strength69000 POUNDS PER SQUARE INCH LBS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5305-00-261-1868 INTERCHANGEABLE
Screw,cap,hexagon Head
5305-00-261-1898 INTERCHANGEABLE
Screw,cap,hexagon Head
5305-00-261-1916 INTERCHANGEABLE
Screw,cap,hexagon Head
5305-00-261-1971 INTERCHANGEABLE
Screw,cap,hexagon Head
5305-00-261-1997 INTERCHANGEABLE
Screw,cap,hexagon Head
5305-00-266-6306 INTERCHANGEABLE
Screw,cap,hexagon Head
5305-00-266-6361 INTERCHANGEABLE
Screw,cap,hexagon Head
5305-00-266-6408 INTERCHANGEABLE
Screw,cap,hexagon Head
5305-00-270-7554 INTERCHANGEABLE
Screw,cap,hexagon Head
5305-00-550-1425 INTERCHANGEABLE
Screw,cap,hexagon Head
Cross-Reference Index
Part NumberManufacturer
MS35290-70 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
NASM90725 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
FFS85AMEND2TYPE2STYLE10PGRADE2 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5305-00-261-1868INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-00-261-1898INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-00-261-1916INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-00-261-1971INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-00-261-1997INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-00-266-6306INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-00-266-6361INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-00-266-6408INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-00-270-7554INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-00-550-1425INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-00-558-7347INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-00-577-5448INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD

Frequently Asked Questions

What is NSN 5305-00-266-6348?

NSN 5305-00-266-6348 is a Screw,cap,hexagon 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 5305-00-266-6348?

NSN 5305-00-266-6348 has 3 cross-referenced part numbers: MS35290-70 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), NASM90725 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), FFS85AMEND2TYPE2STYLE10PGRADE2 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5305-00-266-6348?

There are 12 known substitutes for 5305-00-266-6348: 5305-00-261-1868, 5305-00-261-1898, 5305-00-261-1916 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS35290-70?

Key specifications for MS35290-70: Head Height: 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN; Thread Quantity Per Inch: 24; Material: STEEL OVERALL; Thread Series Designator: UNF. 14 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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