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311-3548 — EXPANSION JOINT,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

311-3548: EXPANSION JOINT,PIPE.

The EXPANSION JOINT,PIPE is a the manufacturer industrial component. Key specifications include joint_type: SINGLE, design_type: CORRUGATED ELEMENT, overall_length: 103.0 MILLIMETERS NOMINAL MM, bolt_hole_diameter: 10.5 MILLIMETERS NOMINAL MM, end_connection_type: FLANGED, bolt_circle_diameter: 220.0 MILLIMETERS NOMINAL MM. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-643-9247, 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
311-3548
NSN: 4730-01-643-9247
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
joint_typeSINGLE
design_typeCORRUGATED ELEMENT
overall_length103.0 MILLIMETERS NOMINAL MM
bolt_hole_diameter10.5 MILLIMETERS NOMINAL MM
bolt_hole_quantity6
end_connection_typeFLANGED
bolt_circle_diameter220.0 MILLIMETERS NOMINAL MM
supplementary_featuresI.D. 92.00 MM; 1ST END FLANGE THICKNESS: 3.6 MM; 2ND END FLANGE THICKNESS; 15.0 MM; 7-CORRUGATIONS; 56 MM FROM 1ST TO 7TH CORRUGATION MM
end_item_identificationEMERGENCY DIESEL GENERATOR SET(3512C)
flange_outside_diameter128.0 MILLIMETERS NOMINAL MM
part_name_assigned_by_controlling_agencyBELLOWS AS
NSN4730-01-643-9247
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 311-3548 · 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
•
DESIGN TYPE: CORRUGATED ELEMENT
•
SUPPLEMENTARY FEATURES: I.D. 92.00 MM; 1ST END FLANGE THICKNESS: 3.6 MM; 2ND END FLANGE THICKNESS; 15.0 MM; 7-CORRUGATIONS; 56 MM FROM 1ST TO 7TH CORRUGATION MM
•
END CONNECTION TYPE: FLANGED
•
BOLT HOLE DIAMETER: 10.5 MILLIMETERS NOMINAL MM
•
BOLT HOLE QUANTITY: 6
•
BOLT CIRCLE DIAMETER: 220.0 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
DESIGN TYPECORRUGATED ELEMENT
SUPPLEMENTARY FEATURESI.D. 92.00 MM; 1ST END FLANGE THICKNESS: 3.6 MM; 2ND END FLANGE THICKNESS; 15.0 MM; 7-CORRUGATIONS; 56 MM FROM 1ST TO 7TH CORRUGATION MM
END CONNECTION TYPEFLANGED
BOLT HOLE DIAMETER10.5 MILLIMETERS NOMINAL MM
OVERALL LENGTH103.0 MILLIMETERS NOMINAL MM
BOLT HOLE QUANTITY6
BOLT CIRCLE DIAMETER220.0 MILLIMETERS NOMINAL MM
PART NAME ASSIGNED BY CONTROLLING AGENCYBELLOWS AS
END ITEM IDENTIFICATIONEMERGENCY DIESEL GENERATOR SET(3512C)
JOINT TYPESINGLE
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 311-3548?
311-3548 is a EXPANSION JOINT,PIPE.
What is the NSN for 311-3548?
311-3548 is cataloged in the U.S. Government catalog under NSN 4730-01-643-9247. This indicates validated use in U.S. government and defense supply chains.
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