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Technical Data Sheet
PartsTable / COMPONENT / MS521301B207240
MS521301B207240 ✓ 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

FILTER,RADIO FREQUENCY INTERFERE. Key specifications include material: RUBBER SYNTHETIC TUBE, temp_rating: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF, exterior_color: BLACK, inside_diameter: 1.125 INCHES NOMINAL IN, outside_diameter: 1.500 INCHES NOMINAL IN, inside_surface_condition: SMOOTH. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-421-1323, 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
MS521301B207240
NSN: 4720-00-421-1323
FSC: 4720
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialRUBBER SYNTHETIC TUBE
temp_rating-40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF
exterior_colorBLACK
inside_diameter1.125 INCHES NOMINAL IN
outside_diameter1.500 INCHES NOMINAL IN
inside_surface_conditionSMOOTH
media_for_which_designedFUEL/OIL, HYDROCARBON SINGLE RESPONSE
cross-sectional_shape_styleROUND
measuring_method_and_length24.000 INCHES NOMINAL OVERALL IN
nondefinitive_spec/std_data1 TYPE AND B GRADE
specification/standard_data81348-ZZ-H-428 GOVERNMENT SPECIFICATION
layer_composition_and_location1ST LAYER BRAIDED FABRIC AND 2ND LAYER BRAIDED FABRIC AND OUTER LAYER SPIRALLY WRAPPED RUBBER FABRIC
NSN4720-00-421-1323
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: MS521301B207240 · 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
•
MEASURING METHOD AND LENGTH: 24.000 INCHES NOMINAL OVERALL IN
•
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND B GRADE
•
MATERIAL: RUBBER SYNTHETIC TUBE
•
LAYER COMPOSITION AND LOCATION: 1ST LAYER BRAIDED FABRIC AND 2ND LAYER BRAIDED FABRIC AND OUTER LAYER SPIRALLY WRAPPED RUBBER FABRIC
•
INSIDE SURFACE CONDITION: SMOOTH
•
EXTERIOR COLOR: BLACK
•
TEMP RATING: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
OUTSIDE DIAMETER: 1.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MEASURING METHOD AND LENGTH24.000 INCHES NOMINAL OVERALL IN
NONDEFINITIVE SPEC/STD DATA1 TYPE AND B GRADE
MATERIALRUBBER SYNTHETIC TUBE
LAYER COMPOSITION AND LOCATION1ST LAYER BRAIDED FABRIC AND 2ND LAYER BRAIDED FABRIC AND OUTER LAYER SPIRALLY WRAPPED RUBBER FABRIC
INSIDE SURFACE CONDITIONSMOOTH
EXTERIOR COLORBLACK
TEMP RATING-40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF
OUTSIDE DIAMETER1.500 INCHES NOMINAL IN
INSIDE DIAMETER1.125 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
M20597Interchangeable
interchangeable cross-reference
interchangeable
M20597XInterchangeable
interchangeable cross-reference
interchangeable
20R1Interchangeable
interchangeable cross-reference
interchangeable
1944Interchangeable
interchangeable cross-reference
interchangeable
9100-0030Interchangeable
interchangeable cross-reference
interchangeable
4244-18Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS521301B207240?
MS521301B207240 is a FILTER,RADIO FREQUENCY INTERFERE.
What parts can replace MS521301B207240?
There are 11 known substitutes for MS521301B207240: M20597, M20597X, 20R1 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS521301B207240?
MS521301B207240 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-421-1323. 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