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PartsTable / COMPONENT / MIL-F-18240 11 UNC 2A THREAD
MIL-F-18240 11 UNC 2A THREAD ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include nominal_thread_diameter: 0.625 INCHES IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-291-4512, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MIL-F-18240 11 UNC 2A THREAD
NSN: 5305-01-291-4512
FSC: 5305
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
nominal_thread_diameter0.625 INCHES IN
NSN5305-01-291-4512
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MIL-F-18240 11 UNC 2A THREAD · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
NOMINAL THREAD DIAMETER: 0.625 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD DIAMETER0.625 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
LL57U40J6MInterchangeable
interchangeable cross-reference
interchangeable
61511800524Interchangeable
interchangeable cross-reference
interchangeable
910060-0406Interchangeable
interchangeable cross-reference
interchangeable
2585164Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-18240Interchangeable
interchangeable cross-reference
interchangeable
FFS92Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-F-18240 11 UNC 2A THREAD?
MIL-F-18240 11 UNC 2A THREAD is a SCREW,MACHINE.
What parts can replace MIL-F-18240 11 UNC 2A THREAD?
There are 21 known substitutes for MIL-F-18240 11 UNC 2A THREAD: LL57U40J6M, 61511800524, 910060-0406 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-F-18240 11 UNC 2A THREAD?
MIL-F-18240 11 UNC 2A THREAD is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-291-4512. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026