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PartsTable / COMPONENT / M6855/4-20L149
M6855/4-20L149 ✓ Verified by PartsTable
— · PIPE SECTION
WHAT YOU NEED TO KNOW
Schedule = wall thickness, NOT diameter Nominal pipe size != actual OD
Sch 40 and Sch 80 same OD, different wall
PRODUCT OVERVIEW

The M6855/4-20L149 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-235-5468, 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
M6855/4-20L149
NSN: 4720-00-235-5468
FSC: 4720
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberM6855/4-20L149
NSN4720-00-235-5468
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: M6855/4-20L149 · OEM ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
INSIDE SURFACE CONDITION: SMOOTH
•
FLEXIBILITY: FLEXIBLE
•
SPECIFICATION/STANDARD DATA: 81349-MIL-R-6855 GOVERNMENT SPECIFICATION
•
OUTSIDE DIAMETER: 0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
•
MEDIA FOR WHICH DESIGNED: WATER SINGLE RESPONSE
•
NONDEFINITIVE SPEC/STD DATA: 40 GRADE AND 3 CLASS
•
INSIDE DIAMETER: 0.375 INCHES NOMINAL IN
•
MINIMUM TENSILE STRENGTH: 1000 POUNDS PER SQUARE INCH LBS
TECHNICAL CHARACTERISTICS (FLIS)
INSIDE SURFACE CONDITIONSMOOTH
FLEXIBILITYFLEXIBLE
SPECIFICATION/STANDARD DATA81349-MIL-R-6855 GOVERNMENT SPECIFICATION
OUTSIDE DIAMETER0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
MEDIA FOR WHICH DESIGNEDWATER SINGLE RESPONSE
NONDEFINITIVE SPEC/STD DATA40 GRADE AND 3 CLASS
INSIDE DIAMETER0.375 INCHES NOMINAL IN
MINIMUM TENSILE STRENGTH1000 POUNDS PER SQUARE INCH LBS
CROSS-SECTIONAL SHAPE STYLEROUND
OUTER COVERING ENVIRONMENTAL PROTECTIONCOLD RESISTANT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
11736139Interchangeable
interchangeable cross-reference
interchangeable
6408-25Interchangeable
interchangeable cross-reference
interchangeable
C6408-25Interchangeable
interchangeable cross-reference
interchangeable
E3603/0.094IDX0.1560050FTInterchangeable
interchangeable cross-reference
interchangeable
R3603/0.094IDX0.15600Interchangeable
interchangeable cross-reference
interchangeable
E3603/0.094IDX0.15600Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M6855/4-20L149?
M6855/4-20L149 is a M6855/4-20L149.
What parts can replace M6855/4-20L149?
There are 26 known substitutes for M6855/4-20L149: 11736139, 6408-25, C6408-25 and 23 more. Substitute compatibility should be verified for your specific system.
Is M6855/4-20L149 still available?
M6855/4-20L149 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026