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Technical Data Sheet

300-3/333X4X12 — EXPANSION JOINT,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

300-3/333X4X12: EXPANSION JOINT,PIPE.

The EXPANSION JOINT,PIPE is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC FLANGE, joint_type: SINGLE, design_type: SPOOL, overall_length: 12.000 INCHES NOMINAL IN, special_features: FLANGES INCLUDE SPLIT RETAINING RINGS,MATERIAL IS COPPER NICKEL ALLOY, bolt_hole_diameter: 0.750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-357-6374, 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
300-3/333X4X12
NSN: 4730-01-357-6374
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 31094 — HOLZ RUBBER CO, INC (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC FLANGE
joint_typeSINGLE
design_typeSPOOL
overall_length12.000 INCHES NOMINAL IN
special_featuresFLANGES INCLUDE SPLIT RETAINING RINGS,MATERIAL IS COPPER NICKEL ALLOY
bolt_hole_diameter0.750 INCHES NOMINAL IN
bolt_hole_quantity8
end_connection_typeFLANGED
bolt_circle_diameter7.500 INCHES NOMINAL IN
end_item_identification2815-01-342-4445 ENGINE,DIESEL ONBOARD 110 FT WPB CG VESSELS FT
flange_outside_diameter9.000 INCHES NOMINAL IN
traverse_maximum_length0.750 INCHES IN
NSN4730-01-357-6374
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 300-3/333X4X12 · 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
•
NOMINAL PIPE SIZE DESIGNATION: 4.000 INCHES IN
•
DESIGN TYPE: SPOOL
•
END CONNECTION TYPE: FLANGED
•
TRAVERSE MAXIMUM LENGTH: 0.750 INCHES IN
•
BOLT HOLE DIAMETER: 0.750 INCHES NOMINAL IN
•
WORKING PRESSURE RATING: 165.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
•
BOLT HOLE QUANTITY: 8
TECHNICAL CHARACTERISTICS
NOMINAL PIPE SIZE DESIGNATION4.000 INCHES IN
DESIGN TYPESPOOL
END CONNECTION TYPEFLANGED
TRAVERSE MAXIMUM LENGTH0.750 INCHES IN
BOLT HOLE DIAMETER0.750 INCHES NOMINAL IN
OVERALL LENGTH12.000 INCHES NOMINAL IN
WORKING PRESSURE RATING165.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
BOLT HOLE QUANTITY8
BOLT CIRCLE DIAMETER7.500 INCHES NOMINAL IN
SPECIAL FEATURESFLANGES INCLUDE SPLIT RETAINING RINGS,MATERIAL IS COPPER NICKEL ALLOY
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 1
4X12SAFEFLEX24Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 300-3/333X4X12?
300-3/333X4X12 is a EXPANSION JOINT,PIPE.
What parts can replace 300-3/333X4X12?
There is 1 known substitute for 300-3/333X4X12: 4X12SAFEFLEX24. Substitute compatibility should be verified for your specific system.
What is the NSN for 300-3/333X4X12?
300-3/333X4X12 is cataloged in the U.S. Government catalog under NSN 4730-01-357-6374. 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.