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603-H — FLANGE,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

603-H: FLANGE,PIPE.

The FLANGE,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL, thickness: 0.094 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN, neck_height: 0.312 INCHES NOMINAL IN, thread_class: 2B, flange_diameter: 3.375 INCHES MINIMUM AND 3.532 INCHES MAXIMUM IN, style_designator: ROUND, NO BOLT HOLES. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-758-2413, 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
603-H
NSN: 4730-00-758-2413
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 71177 — BUCKEYE FORGE INC (USA)
SPECIFICATIONS
materialSTEEL
thickness0.094 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
neck_height0.312 INCHES NOMINAL IN
thread_class2B
flange_diameter3.375 INCHES MINIMUM AND 3.532 INCHES MAXIMUM IN
style_designatorROUND, NO BOLT HOLES
raised_face_height0.250 INCHES NOMINAL IN
nominal_thread_size2.000 INCHES IN
flange_section_styleRAISED FACE, RAISED NECK
raised_face_diameter2.594 INCHES MINIMUM AND 2.656 INCHES MAXIMUM IN
face_seating_surface_conditionUNFINISHED
screw_thread_series_designatorNPT
NSN4730-00-758-2413
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 603-H · 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
•
FLANGE DIAMETER: 3.375 INCHES MINIMUM AND 3.532 INCHES MAXIMUM IN
•
FACE SEATING SURFACE CONDITION: UNFINISHED
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 2.000 INCHES IN
•
FLANGE SECTION STYLE: RAISED FACE, RAISED NECK
•
STYLE DESIGNATOR: ROUND, NO BOLT HOLES
•
NECK HEIGHT: 0.312 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 2.000 INCHES IN
•
RAISED FACE DIAMETER: 2.594 INCHES MINIMUM AND 2.656 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
FLANGE DIAMETER3.375 INCHES MINIMUM AND 3.532 INCHES MAXIMUM IN
FACE SEATING SURFACE CONDITIONUNFINISHED
NOMINAL PIPE SIZE FOR WHICH DESIGNED2.000 INCHES IN
FLANGE SECTION STYLERAISED FACE, RAISED NECK
STYLE DESIGNATORROUND, NO BOLT HOLES
NECK HEIGHT0.312 INCHES NOMINAL IN
NOMINAL THREAD SIZE2.000 INCHES IN
RAISED FACE DIAMETER2.594 INCHES MINIMUM AND 2.656 INCHES MAXIMUM IN
RAISED FACE HEIGHT0.250 INCHES NOMINAL IN
SCREW THREAD SERIES DESIGNATORNPT
SUBSTITUTES & CROSS-REFERENCES 1
600-HReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 603-H?
603-H is a FLANGE,PIPE.
What parts can replace 603-H?
There is 1 known substitute for 603-H: 600-H. Substitute compatibility should be verified for your specific system.
What is the NSN for 603-H?
603-H is cataloged in the U.S. Government catalog under NSN 4730-00-758-2413. 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.