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1H5278 — FLANGE,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1H5278: FLANGE,PIPE.

The FLANGE,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL, thickness: 0.500 INCHES NOMINAL IN, neck_height: 0.250 INCHES NOMINAL IN, flange_width: 1.812 INCHES NOMINAL IN, flange_length: 2.125 INCHES NOMINAL IN, style_designator: BOLT HOLE CONNECTOR PLATE. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-949-0882, 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
1H5278
NSN: 4730-00-949-0882
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL
thickness0.500 INCHES NOMINAL IN
neck_height0.250 INCHES NOMINAL IN
flange_width1.812 INCHES NOMINAL IN
flange_length2.125 INCHES NOMINAL IN
style_designatorBOLT HOLE CONNECTOR PLATE
bolt_hole_diameter0.328 INCHES NOMINAL IN
flange_section_stylePLAIN FACE, WELDING NECK
face_seating_surface_conditionMACHINED
nominal_pipe_size_for_which_designed0.969 INCHES IN
outside_edge_to_bolt_hole_center_distance_along_width0.344 INCHES NOMINAL IN
center_to_center_distance_between_bolt_holes_along_length1.500 INCHES NOMINAL IN
NSN4730-00-949-0882
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1H5278 · 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
•
FACE SEATING SURFACE CONDITION: MACHINED
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 0.969 INCHES IN
•
FLANGE SECTION STYLE: PLAIN FACE, WELDING NECK
•
STYLE DESIGNATOR: BOLT HOLE CONNECTOR PLATE
•
BOLT HOLE DIAMETER: 0.328 INCHES NOMINAL IN
•
NECK HEIGHT: 0.250 INCHES NOMINAL IN
•
FLANGE LENGTH: 2.125 INCHES NOMINAL IN
•
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH: 1.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FACE SEATING SURFACE CONDITIONMACHINED
NOMINAL PIPE SIZE FOR WHICH DESIGNED0.969 INCHES IN
FLANGE SECTION STYLEPLAIN FACE, WELDING NECK
STYLE DESIGNATORBOLT HOLE CONNECTOR PLATE
BOLT HOLE DIAMETER0.328 INCHES NOMINAL IN
NECK HEIGHT0.250 INCHES NOMINAL IN
FLANGE LENGTH2.125 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH1.500 INCHES NOMINAL IN
FLANGE WIDTH1.812 INCHES NOMINAL IN
MATERIALSTEEL
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1H5278?
1H5278 is a FLANGE,PIPE.
What is the NSN for 1H5278?
1H5278 is cataloged in the U.S. Government catalog under NSN 4730-00-949-0882. 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.