PartsTable
Technical Data Sheet
PartsTable / MRO / B44-4
B44-4 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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 CAPACITOR,FIXED,ELECTROLYTIC is a the manufacturer cache protection component designed to preserve data integrity during power loss events in enterprise server and storage controller environments. Key specifications include material: PLASTIC VINYL TUBE, flexibility: FLEXIBLE, temp_rating: -47.0 FAHRENHEIT AND 165.0 FAHRENHEIT SINGLE RESPONSE DEGF, exterior_color: CLEAR, inside_diameter: 0.312 INCHES NOMINAL IN, outside_diameter: 0.438 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-058-5452, 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→ B44-4
NSN: 4720-00-058-5452
FSC: 4720
CAGE: 61501 — SAINT-GOBAIN PERFORMANCE PLASTICS (USA)
SPECIFICATIONS
materialPLASTIC VINYL TUBE
flexibilityFLEXIBLE
temp_rating-47.0 FAHRENHEIT AND 165.0 FAHRENHEIT SINGLE RESPONSE DEGF
exterior_colorCLEAR
inside_diameter0.312 INCHES NOMINAL IN
outside_diameter0.438 INCHES NOMINAL IN
operating_pressure100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
burst_test_pressure400.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
end_item_identificationGRUMMAN A10 AIRCRAFT
inside_surface_conditionSMOOTH
minimum_tensile_strength2100 POUNDS PER SQUARE INCH LBS
cross-sectional_shape_styleROUND
NSN4720-00-058-5452
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: B44-4 · 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
•
NONMETALLIC HARDNESS RATING: 65.0 NOMINAL SHORE DUROMETER A
•
INSIDE SURFACE CONDITION: SMOOTH
•
MATERIAL: PLASTIC VINYL TUBE
•
FLEXIBILITY: FLEXIBLE
•
OPERATING PRESSURE: 100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
MEASURING METHOD AND LENGTH: 600.000 INCHES NOMINAL OVERALL IN
•
INSIDE DIAMETER: 0.375 INCHES NOMINAL IN
•
EXTERIOR COLOR: CLEAR
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
NONMETALLIC HARDNESS RATING65.0 NOMINAL SHORE DUROMETER A
INSIDE SURFACE CONDITIONSMOOTH
MATERIALPLASTIC VINYL TUBE
FLEXIBILITYFLEXIBLE
OPERATING PRESSURE100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MEASURING METHOD AND LENGTH600.000 INCHES NOMINAL OVERALL IN
INSIDE DIAMETER0.375 INCHES NOMINAL IN
EXTERIOR COLORCLEAR
END ITEM IDENTIFICATIONGRUMMAN A10 AIRCRAFT
BURST TEST PRESSURE400.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
PV1612-1Interchangeable
interchangeable cross-reference
interchangeable
B44X4X 3/4 X 1.000Interchangeable
interchangeable cross-reference
interchangeable
SM-A-886914Interchangeable
interchangeable cross-reference
interchangeable
375MS332P001Interchangeable
interchangeable cross-reference
interchangeable
FG12Interchangeable
interchangeable cross-reference
interchangeable
375MT332P001Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B44-4?
B44-4 is a CAPACITOR,FIXED,ELECTROLYTIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace B44-4?
There are 23 known substitutes for B44-4: PV1612-1, B44X4X 3/4 X 1.000, SM-A-886914 and 20 more. Substitute compatibility should be verified for your specific system.
Is B44-4 still available?
B44-4 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: July 2026