PartsTable
Technical Data Sheet
MIL-W-3861 ✓ Verified by PartsTable
· MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Stranded for flexible routing, solid for conduit THHN/THWN dual-rated — check both tables
Ampacity depends on installation method
PRODUCT OVERVIEW

The MIL-W-3861 is a the manufacturer industrial component. Key specifications include conductor_form: STRANDED SINGLE CONDUCTOR, strand_awg_size_per_conductor: 26 SINGLE CONDUCTOR. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-00-236-9491, 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
MRO MRO_GENERAL MIL-W-3861
NSN: 6145-00-236-9491
FSC: 6145
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
conductor_formSTRANDED SINGLE CONDUCTOR
strand_awg_size_per_conductor26 SINGLE CONDUCTOR
NSN6145-00-236-9491
COMPONENT DIAGRAM
WIRE / CABLE — AMPACITY DEPENDS ON INSTALLATION CROSS-SECTION JACKET WIRE SPECIFICATIONS Conductor Size: — Conductor Count: — Voltage Rating: — Insulation: — Temp Rating: — PN: MIL-W-3861 · OEM ⚠ VERIFY BEFORE ORDERING Ampacity depends on installation method — conduit ≠ free air ≠ underground. Same wire, different ratings. AWG sizing is inverse — smaller number = thicker wire (4 AWG > 12 AWG) ✓ BROKER TIP Stranded = flexible routing and vibration resistance. Solid = fixed conduit runs only. THHN/THWN = dual rated — check both dry and wet ampacity tables PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
CONDUCTOR FORM: SOLID SINGLE CONDUCTOR
CROSS SECTION OUTSIDE DIAMETER: 0.040 INCHES NOMINAL IN
ROUND CONDUCTOR SIZE: 18 AWG SINGLE CONDUCTOR
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-W-343,SOFT FED SPEC SINGLE MATERIAL RESPONSE CORE CONDUCTOR SINGLE CONDUCTOR
MATERIAL: COPPER CORE CONDUCTOR SINGLE CONDUCTOR
CROSS-SECTIONAL SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS (FLIS)
CONDUCTOR FORMSOLID SINGLE CONDUCTOR
CROSS SECTION OUTSIDE DIAMETER0.040 INCHES NOMINAL IN
ROUND CONDUCTOR SIZE18 AWG SINGLE CONDUCTOR
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-W-343,SOFT FED SPEC SINGLE MATERIAL RESPONSE CORE CONDUCTOR SINGLE CONDUCTOR
MATERIALCOPPER CORE CONDUCTOR SINGLE CONDUCTOR
CROSS-SECTIONAL SHAPE STYLEROUND
CONDUCTOR FORMSOLID SINGLE CONDUCTOR
CROSS SECTION OUTSIDE DIAMETER0.040 INCHES NOMINAL IN
ROUND CONDUCTOR SIZE18 AWG SINGLE CONDUCTOR
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-W-343,SOFT FED SPEC SINGLE MATERIAL RESPONSE CORE CONDUCTOR SINGLE CONDUCTOR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
QQ-W-343Upgraded Successor
successor cross-reference
successor
QQW343C04B2TUpgraded Successor
successor cross-reference
successor
QQW343B1801TUpgraded Successor
successor cross-reference
successor
QQW343S01S1BUpgraded Successor
successor cross-reference
successor
QQ343C65A2BUpgraded Successor
successor cross-reference
successor
165 100 0812Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-W-3861?
MIL-W-3861 is a MIL-W-3861. It is classified as a MRO (MRO_GENERAL).
What parts can replace MIL-W-3861?
There are 16 known substitutes for MIL-W-3861: QQ-W-343, QQW343C04B2T, QQW343B1801T and 13 more. Substitute compatibility should be verified for your specific system.
Is MIL-W-3861 still available?
MIL-W-3861 is currently cancelled.
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