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Technical Data Sheet
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3-74048-2-40 — FLANGE,PIPE,SWIVEL RETAINING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

3-74048-2-40: FLANGE,PIPE,SWIVEL RETAINING.

The FLANGE,PIPE,SWIVEL RETAINING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, thickness: 0.810 INCHES NOMINAL IN, flange_diameter: 6.500 INCHES NOMINAL IN, style_designator: ROUND, ONE BOLT HOLE CIRCLE, bolt_hole_diameter: 0.690 INCHES NOMINAL IN, bolt_circle_diameter: 5.190 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-903-8636, 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
3-74048-2-40
NSN: 4730-00-903-8636
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 01276 — DANFOSS POWER SOLUTIONS II, LLC (USA)
SPECIFICATIONS
materialCOPPER ALLOY
thickness0.810 INCHES NOMINAL IN
flange_diameter6.500 INCHES NOMINAL IN
style_designatorROUND, ONE BOLT HOLE CIRCLE
bolt_hole_diameter0.690 INCHES NOMINAL IN
bolt_hole_quantity7
bolt_circle_diameter5.190 INCHES NOMINAL IN
flange_section_stylePLAIN FACE
face_seating_surface_conditionMACHINED
nominal_pipe_size_for_which_designed2.000 INCHES IN
NSN4730-00-903-8636
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3-74048-2-40 · 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: 6.500 INCHES NOMINAL IN
•
FACE SEATING SURFACE CONDITION: MACHINED
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 2.000 INCHES IN
•
FLANGE SECTION STYLE: PLAIN FACE
•
STYLE DESIGNATOR: ROUND, ONE BOLT HOLE CIRCLE
•
BOLT HOLE DIAMETER: 0.690 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 7
•
BOLT CIRCLE DIAMETER: 5.190 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FLANGE DIAMETER6.500 INCHES NOMINAL IN
FACE SEATING SURFACE CONDITIONMACHINED
NOMINAL PIPE SIZE FOR WHICH DESIGNED2.000 INCHES IN
FLANGE SECTION STYLEPLAIN FACE
STYLE DESIGNATORROUND, ONE BOLT HOLE CIRCLE
BOLT HOLE DIAMETER0.690 INCHES NOMINAL IN
BOLT HOLE QUANTITY7
BOLT CIRCLE DIAMETER5.190 INCHES NOMINAL IN
MATERIALCOPPER ALLOY
THICKNESS0.810 INCHES NOMINAL IN
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
188-74048-2-40Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3-74048-2-40?
3-74048-2-40 is a FLANGE,PIPE,SWIVEL RETAINING.
What parts can replace 3-74048-2-40?
There is 1 known substitute for 3-74048-2-40: 188-74048-2-40. Substitute compatibility should be verified for your specific system.
What is the NSN for 3-74048-2-40?
3-74048-2-40 is cataloged in the U.S. Government catalog under NSN 4730-00-903-8636. 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.