PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-F-18240Screw,machine

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5305-01-291-4512 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-291-4512 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-291-4512. Primary manufacturer part number: MIL-F-18240.
Features
  • Screw,machine — FSC 5305
  • Nominal Thread Diameter: 0.625 INCHES IN
  • 4 verified cross-references
  • Primary manufacturer: Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-01-291-4512, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, 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
NSN5305-01-291-4512
Primary Part NumberMIL-F-18240
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Nominal Thread Diameter0.625 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5305-00-060-2540 INTERCHANGEABLE
Screw,cap,socket Head
5305-00-115-6184 INTERCHANGEABLE
Screw,cap,socket Head
5320-00-117-7516NASM21090 INTERCHANGEABLE
Rivet,solid
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5305-00-340-5424NAS1189E06P6 INTERCHANGEABLE
Screw,cap,socket Head
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5305-00-567-5903NAS1189-06T5L INTERCHANGEABLE
Screw,cap,socket Head
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5305-00-936-4983AES40K500878EE0A15 INTERCHANGEABLE
Setscrew
The American Society of Mechanical Engineers
5305-01-039-7553MS51965-117 INTERCHANGEABLE
Setscrew
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5306-01-097-5840 INTERCHANGEABLE
Bolt,machine
5306-01-112-78642585163-17 INTERCHANGEABLE
Bolt,machine
Naval Ship Systems Command
5305-01-346-1579 INTERCHANGEABLE
Screw,cap,socket Head
Cross-Reference Index
Part NumberManufacturer
MIL-F-18240 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-18240 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M18240 0.675 X 1.250 LG Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-F-18240 11 UNC 2A THREAD Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5305-00-060-2540INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-00-115-6184INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5320-00-117-7516INTERCHANGEABLE
RIVET,SOLID
NASM21090
5305-00-340-5424INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
NAS1189E06P6
5305-00-567-5903INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
NAS1189-06T5L
5305-00-936-4983INTERCHANGEABLE
SETSCREW
AES40K500878EE0A15
5305-01-039-7553INTERCHANGEABLE
SETSCREW
MS51965-117
5306-01-097-5840INTERCHANGEABLE
BOLT,MACHINE
5306-01-112-7864INTERCHANGEABLE
BOLT,MACHINE
2585163-17
5305-01-346-1579INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-429-5654INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-476-9158INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
218071931A

Frequently Asked Questions

What is NSN 5305-01-291-4512?

NSN 5305-01-291-4512 is a Screw,machine, manufactured by Military Specifications Promulgated by Military Departments/agencies 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 5305-01-291-4512?

NSN 5305-01-291-4512 has 4 cross-referenced part numbers: MIL-F-18240 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-18240 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M18240 0.675 X 1.250 LG (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-F-18240 11 UNC 2A THREAD (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5305-01-291-4512?

There are 12 known substitutes for 5305-01-291-4512: 5305-00-060-2540, 5305-00-115-6184, 5320-00-117-7516 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-F-18240?

Key specifications for MIL-F-18240: Nominal Thread Diameter: 0.625 INCHES IN. 1 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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