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640D349 ✓ 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

The STRAINER,SEDIMENT is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: OVAL COUNTERSUNK, point_size: 0.188 INCHES IN, shank_shape: HEXAGON, swage_depth: 0.063 INCHES IN, thread_class: 2A A. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-184-9485, 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
640D349
NSN: 4730-01-184-9485
FSC: 4730
CAGE: 90099 — NORTHROP GRUMMAN SYSTEMS CORPORATION DIV MARINE SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleOVAL COUNTERSUNK
point_size0.188 INCHES IN
shank_shapeHEXAGON
swage_depth0.063 INCHES IN
thread_class2A A
head_diameter0.257 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN
overall_width6.30 INCHES NOMINAL IN
thread_length0.312 INCHES MAXIMUM IN
inclosure_typeHERMETICALLY SEALED
overall_height0.343 INCHES IN
overall_length5.400 INCHES NOMINAL IN
NSN4730-01-184-9485
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 640D349 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
1558Interchangeable
interchangeable cross-reference
interchangeable
16-8INInterchangeable
interchangeable cross-reference
interchangeable
M18180/3-13A01Interchangeable
interchangeable cross-reference
interchangeable
50Interchangeable
interchangeable cross-reference
interchangeable
MIL-F-18180CInterchangeable
interchangeable cross-reference
interchangeable
B16-5-1961Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 640D349?
640D349 is a STRAINER,SEDIMENT.
What parts can replace 640D349?
There are 19 known substitutes for 640D349: 1558, 16-8IN, M18180/3-13A01 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 640D349?
640D349 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-184-9485. 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