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PartsTable / COMPONENT / 640D339 PIECE 5
640D339 PIECE 5 ✓ 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 FLANGE,PIPE,BLIND is a the manufacturer industrial component. Key specifications include material: STEEL, thickness: 1.125 INCHES NOMINAL IN, flange_diameter: 13.500 INCHES NOMINAL IN, furnished_items: GASKET, style_designator: ROUND, ONE BOLT HOLE CIRCLE, bolt_hole_diameter: 0.875 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 4730-00-541-0490, 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
640D339 PIECE 5
NSN: 4730-00-541-0490
FSC: 4730
CAGE: 90099 — NORTHROP GRUMMAN SYSTEMS CORPORATION DIV MARINE SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL
thickness1.125 INCHES NOMINAL IN
flange_diameter13.500 INCHES NOMINAL IN
furnished_itemsGASKET
style_designatorROUND, ONE BOLT HOLE CIRCLE
bolt_hole_diameter0.875 INCHES NOMINAL IN
bolt_hole_quantity8
raised_face_height0.062 INCHES NOMINAL IN
bolt_circle_diameter11.750 INCHES NOMINAL IN
flange_section_styleRAISED FACE DISHED (BLIND)
face_seating_surface_conditionMACHINED
nominal_pipe_size_for_which_designed8.000 INCHES IN
NSN4730-00-541-0490
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 640D339 PIECE 5 · 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
•
FURNISHED ITEMS: GASKET
•
THICKNESS: 1.125 INCHES NOMINAL IN
•
FLANGE DIAMETER: 13.500 INCHES NOMINAL IN
•
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED: 100.0 FAHRENHEIT GAS AND 100.0 FAHRENHEIT OIL AND 100.0 FAHRENHEIT WATER DEGF
•
OPERATING PRESSURE AND TYPE: 150.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 230.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED AND 230.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED AND 230.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LBS
•
MATERIAL: STEEL
•
STYLE DESIGNATOR: ROUND, ONE BOLT HOLE CIRCLE
•
BOLT HOLE DIAMETER: 0.875 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
FURNISHED ITEMSGASKET
THICKNESS1.125 INCHES NOMINAL IN
FLANGE DIAMETER13.500 INCHES NOMINAL IN
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED100.0 FAHRENHEIT GAS AND 100.0 FAHRENHEIT OIL AND 100.0 FAHRENHEIT WATER DEGF
OPERATING PRESSURE AND TYPE150.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 230.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED AND 230.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED AND 230.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LBS
MATERIALSTEEL
STYLE DESIGNATORROUND, ONE BOLT HOLE CIRCLE
BOLT HOLE DIAMETER0.875 INCHES NOMINAL IN
BOLT HOLE QUANTITY8
BOLT CIRCLE DIAMETER11.750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
5000S4823-64496Interchangeable
interchangeable cross-reference
interchangeable
ASME B16.5Interchangeable
interchangeable cross-reference
interchangeable
B16.5Interchangeable
interchangeable cross-reference
interchangeable
ASAB16-5Interchangeable
interchangeable cross-reference
interchangeable
M18180/2-56A09AInterchangeable
interchangeable cross-reference
interchangeable
MIL-F-18180Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 640D339 PIECE 5?
640D339 PIECE 5 is a FLANGE,PIPE,BLIND.
What parts can replace 640D339 PIECE 5?
There are 12 known substitutes for 640D339 PIECE 5: 5000S4823-64496, ASME B16.5, B16.5 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 640D339 PIECE 5?
640D339 PIECE 5 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-541-0490. 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