PartsTable
Technical Data Sheet
Download PDF

123EC51041-1 — ADAPTER,STRAIGHT,FLANGE TO HOSE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

123EC51041-1: ADAPTER,STRAIGHT,FLANGE TO HOSE.

ADAPTER,STRAIGHT,FLANGE TO HOSE. Key specifications include material: ALUMINUM ALLOY 5052 FLANGE, flange_shape: RECTANGULAR WITH HOLES FIRST END, nominal_width: 2.000 INCHES FIRST END IN, nominal_length: 3.000 INCHES FIRST END IN, connection_type: UNTHREADED EXTERNAL HOSE SECOND END, connection_style: BEADED (HOSE) SECOND END. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-412-7329, 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
123EC51041-1
NSN: 4730-00-412-7329
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 79RG9 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 5052 FLANGE
flange_shapeRECTANGULAR WITH HOLES FIRST END
nominal_width2.000 INCHES FIRST END IN
nominal_length3.000 INCHES FIRST END IN
connection_typeUNTHREADED EXTERNAL HOSE SECOND END
connection_styleBEADED (HOSE) SECOND END
special_featuresTWO MTG HOLES 0.204 IN. DIA,2.500 C TO C IN
nominal_thickness0.040 INCHES FIRST END IN
surface_treatmentCHROMATE AND EPOXY OVERALL
bolt_hole_quantity4 FIRST END
flange_face_designPLAIN FIRST END
nominal_overall_length1.620 INCHES IN
NSN4730-00-412-7329
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 123EC51041-1 · 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 SHAPE: RECTANGULAR WITH HOLES FIRST END
•
FLANGE FACE DESIGN: PLAIN FIRST END
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: -1L-C-5541,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE AND -1L-P-2337 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
CONNECTION STYLE: BEADED (HOSE) SECOND END
•
NOMINAL LENGTH: 3.000 INCHES FIRST END IN
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 1.000 INCHES SECOND END IN
•
NOMINAL OVERALL LENGTH: 1.620 INCHES IN
•
CONNECTION TYPE: UNTHREADED EXTERNAL HOSE SECOND END
TECHNICAL CHARACTERISTICS
FLANGE SHAPERECTANGULAR WITH HOLES FIRST END
FLANGE FACE DESIGNPLAIN FIRST END
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION-1L-C-5541,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE AND -1L-P-2337 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
CONNECTION STYLEBEADED (HOSE) SECOND END
NOMINAL LENGTH3.000 INCHES FIRST END IN
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED1.000 INCHES SECOND END IN
NOMINAL OVERALL LENGTH1.620 INCHES IN
CONNECTION TYPEUNTHREADED EXTERNAL HOSE SECOND END
CONNECTION TYPEFLANGE FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A250/8,TEMPER O FED SPEC SINGLE MATERIAL RESPONSE AND WW-T-700/4,TEMPER O TYPE 1 FED SPEC SINGLE MATERIAL RESPONSE FLANGE
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
123EC51041Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 123EC51041-1?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 123EC51041-1?
123EC51041-1 is a ADAPTER,STRAIGHT,FLANGE TO HOSE.
What parts can replace 123EC51041-1?
There is 1 known substitute for 123EC51041-1: 123EC51041. Substitute compatibility should be verified for your specific system.
What is the NSN for 123EC51041-1?
123EC51041-1 is cataloged in the U.S. Government catalog under NSN 4730-00-412-7329. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 123EC51041-1

✓ 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.