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Technical Data Sheet
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403818 — Technical Data Sheet

✓ 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 COIL,RADIO FREQUENCY is a the manufacturer industrial component. Key specifications include connection_type: EXTERNAL QUICK DISCONNECT, style_designator: PLUG, end_item_identification: 3990-01-443-8024 ENGINEERING MISSION MODULE USED ON THE PALLATIZED LOADING SYSTEM, media_for_which_designed: AIR, part_name_assigned_by_controlling_agency: CAP QUICK COUPLET, FEMALE BODY. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-920-0222, 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
403818
NSN: 5325-00-920-0222
FSC: 5325
CAGE: 80254 — TEXTRON LYCOMING INC WILLIAMSPORT PLANT (USA)
SPECIFICATIONS
connection_typeEXTERNAL QUICK DISCONNECT
style_designatorPLUG
end_item_identification3990-01-443-8024 ENGINEERING MISSION MODULE USED ON THE PALLATIZED LOADING SYSTEM
media_for_which_designedAIR
part_name_assigned_by_controlling_agencyCAP QUICK COUPLET, FEMALE BODY
NSN5325-00-920-0222
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 403818 · 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
•
MATERIAL: STEEL
•
MAJOR THICKNESS: 0.066 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
•
USAGE DESIGN: INTERNAL
•
INSIDE DIAMETER: 0.626 INCHES MINIMUM AND 0.646 INCHES MAXIMUM IN
•
END STYLE: 90 DEGREE PARALLEL
•
RING STYLE: STRAIGHT GAP
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OUTSIDE DIAMETER: 0.688 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL
MAJOR THICKNESS0.066 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
USAGE DESIGNINTERNAL
INSIDE DIAMETER0.626 INCHES MINIMUM AND 0.646 INCHES MAXIMUM IN
END STYLE90 DEGREE PARALLEL
RING STYLESTRAIGHT GAP
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OUTSIDE DIAMETER0.688 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
1DD779Interchangeable
interchangeable cross-reference
interchangeable
615746C1Interchangeable
interchangeable cross-reference
interchangeable
403818-10Interchangeable
interchangeable cross-reference
interchangeable
12715Interchangeable
interchangeable cross-reference
interchangeable
321379R1Interchangeable
Same NIIN cross-reference
interchangeable
9M8919Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 403818?
403818 is a COIL,RADIO FREQUENCY.
What parts can replace 403818?
There are 6 known substitutes for 403818: 1DD779, 615746C1, 403818-10 and 3 more. Substitute compatibility should be verified for your specific system.
Is 403818 still available?
403818 is currently cancelled.
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Last verified: September 2026