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PartsTable / COMPONENT / FMH-21-.375 ID
FMH-21-.375 ID ✓ 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 FMH-21-.375 ID is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-01-345-5638, 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
FMH-21-.375 ID
NSN: 4720-01-345-5638
FSC: 4720
CAGE: 60535 — FLEXIBLE METAL INC (USA)
SPECIFICATIONS
Part NumberFMH-21-.375 ID
NSN4720-01-345-5638
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: FMH-21-.375 ID · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
487086PC41Interchangeable
interchangeable cross-reference
interchangeable
401369PC41Interchangeable
interchangeable cross-reference
interchangeable
407480PC41Interchangeable
interchangeable cross-reference
interchangeable
170124Interchangeable
interchangeable cross-reference
interchangeable
150324Interchangeable
interchangeable cross-reference
interchangeable
FC300-24Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FMH-21-.375 ID?
FMH-21-.375 ID is a FMH-21-.375 ID.
What parts can replace FMH-21-.375 ID?
There are 8 known substitutes for FMH-21-.375 ID: 487086PC41, 401369PC41, 407480PC41 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FMH-21-.375 ID?
FMH-21-.375 ID is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-01-345-5638. 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