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231-0408 — COUPLING,CLAMP,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

231-0408: COUPLING,CLAMP,PIPE.

The COUPLING,CLAMP,PIPE is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC OR RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR GASKET, special_features: W/2 STEEL BOLTS AND 2 STEEL NUTS, pipe_size_accommodated: 4.000 INCHES NOMINAL IN, end_type_for_which_designed: COLLARED, tube_outside_diameter_for_which_designed: 4.344 INCHES MINIMUM AND 4.375 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-455-9339, 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
231-0408
NSN: 4730-00-455-9339
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 93568 — HARSCO CORP BMY-COMBAT SYSTEMS DIV (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC OR RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR GASKET
segment_quantity2
special_featuresW/2 STEEL BOLTS AND 2 STEEL NUTS
pipe_size_accommodated4.000 INCHES NOMINAL IN
end_type_for_which_designedCOLLARED
tube_outside_diameter_for_which_designed4.344 INCHES MINIMUM AND 4.375 INCHES MAXIMUM IN
NSN4730-00-455-9339
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 231-0408 · 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
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 4.344 INCHES MINIMUM AND 4.375 INCHES MAXIMUM IN
•
PIPE SIZE ACCOMMODATED: 4.000 INCHES NOMINAL IN
•
END TYPE FOR WHICH DESIGNED: COLLARED
•
SEGMENT QUANTITY: 2
•
MATERIAL: IRON OR STEEL HOUSING
TECHNICAL CHARACTERISTICS
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED4.344 INCHES MINIMUM AND 4.375 INCHES MAXIMUM IN
PIPE SIZE ACCOMMODATED4.000 INCHES NOMINAL IN
END TYPE FOR WHICH DESIGNEDCOLLARED
SPECIAL FEATURESW/2 STEEL BOLTS AND 2 STEEL NUTS
SEGMENT QUANTITY2
MATERIALIRON OR STEEL HOUSING
MATERIALRUBBER SYNTHETIC OR RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR GASKET
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 2
05-231-0408Reference document
Same NSN cross-reference
Reference document — Secondary reference
00231-0408Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedAcquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 231-0408?
231-0408 is a COUPLING,CLAMP,PIPE.
What parts can replace 231-0408?
There are 2 known substitutes for 231-0408: 05-231-0408, 00231-0408. Substitute compatibility should be verified for your specific system.
What is the NSN for 231-0408?
231-0408 is cataloged in the U.S. Government catalog under NSN 4730-00-455-9339. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.