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Technical Data Sheet
PartsTable / COMPONENT / B5-45-2590
B5-45-2590 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

SEAL ASSEMBLY,SHAFT,SPRING LOADE. Key specifications include material: IRON CAST BODY, mesh_size: 20.0, body_length: 5.000 INCHES NOMINAL IN, temp_rating: 150.0 FAHRENHEIT NOMINAL DEGF, mounting_type: INLET CONNECTION AND OUTLET CONNECTION LINE, wire_diameter: 0.014 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-808-7447, 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
B5-45-2590
NSN: 4730-00-808-7447
FSC: 4730
CAGE: 81361 — EDGEWOOD CHEMICAL BIOLOGICAL CENTER ECBC (USA)
SPECIFICATIONS
materialIRON CAST BODY
mesh_size20.0
body_length5.000 INCHES NOMINAL IN
temp_rating150.0 FAHRENHEIT NOMINAL DEGF
mounting_typeINLET CONNECTION AND OUTLET CONNECTION LINE
wire_diameter0.014 INCHES NOMINAL IN
style_designatorY STRAINER W/THREADED COVER
operating_pressure125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
filtering_media_designMESH SINGLE FILTERING MEDIA RESPONSE
media_for_which_designedFUEL/OIL, HYDROCARBON AND GAS AND WATER
nondefinitive_spec/std_data1 TYPE AND Y STYLE AND 125 CLASS
first_intake_connection_typeTHREADED INTERNAL PIPE LINE
NSN4730-00-808-7447
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: B5-45-2590 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL: NICKEL ALLOY SCREENING
•
DISTANCE FROM BOTTOM OF BODY TO CENTER OF INLET: 3.750 INCHES NOMINAL IN
•
OPERATING PRESSURE: 125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
•
STYLE DESIGNATOR: Y STRAINER W/THREADED COVER
•
FIRST INTAKE CONNECTION TYPE: THREADED INTERNAL PIPE LINE
•
FIRST INTAKE NOMINAL THREAD SIZE: 1.000 INCHES IN
•
MEDIA FOR WHICH DESIGNED: FUEL/OIL, HYDROCARBON AND GAS AND WATER
•
FIRST INTAKE THREAD SERIES DESIGNATOR: NPT
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALNICKEL ALLOY SCREENING
DISTANCE FROM BOTTOM OF BODY TO CENTER OF INLET3.750 INCHES NOMINAL IN
OPERATING PRESSURE125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
STYLE DESIGNATORY STRAINER W/THREADED COVER
FIRST INTAKE CONNECTION TYPETHREADED INTERNAL PIPE LINE
FIRST INTAKE NOMINAL THREAD SIZE1.000 INCHES IN
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON AND GAS AND WATER
FIRST INTAKE THREAD SERIES DESIGNATORNPT
FIRST INTAKE THREAD DIRECTIONRIGHT-HAND
NONDEFINITIVE SPEC/STD DATA1 TYPE AND Y STYLE AND 125 CLASS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
MIL-S-16293GInterchangeable
interchangeable cross-reference
interchangeable
STRAINER1INCASTIR0NSCREWEDENDSInterchangeable
interchangeable cross-reference
interchangeable
WW-S-2739Interchangeable
interchangeable cross-reference
interchangeable
MIL-S-16293Interchangeable
interchangeable cross-reference
interchangeable
WW-S-2739C10Interchangeable
interchangeable cross-reference
interchangeable
AT1-2-1-32Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B5-45-2590?
B5-45-2590 is a SEAL ASSEMBLY,SHAFT,SPRING LOADE.
What parts can replace B5-45-2590?
There are 23 known substitutes for B5-45-2590: MIL-S-16293G, STRAINER1INCASTIR0NSCREWEDENDS, WW-S-2739 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B5-45-2590?
B5-45-2590 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-808-7447. 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