PartsTable
Technical Data Sheet
53673C4 ✓ Verified by PartsTable
· HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The ELBOW,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, flow_angle: 90.0 DEGREES, leg_length: 1.438 INCHES NOMINAL SECOND END IN, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3A ALL ENDS A, connection_type: THREADED EXTERNAL BOSS SECOND END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-785-8155, 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
53673C4
NSN: 4730-00-785-8155
FSC: 4730
CAGE: 78640 — MITSUBISHI CATERPILLAR FORKLIFT AMERICA, INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
flow_angle90.0 DEGREES
leg_length1.438 INCHES NOMINAL SECOND END IN
seat_angle37.0 DEGREES FIRST END
thread_class3A ALL ENDS A
connection_typeTHREADED EXTERNAL BOSS SECOND END
connection_styleFLARED (TUBE) FIRST END
nominal_thread_size0.750 INCHES ALL ENDS IN
thread_series_designatorUNF ALL ENDS
furnished_items_and_quantity1 LOCKNUT AND 1 PREFORMED PACKING AND 1 FLAT WASHER
nominal_outside_diameter_tube_accommodated0.500 INCHES FIRST END IN
NSN4730-00-785-8155
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 53673C4 · 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
FLOW ANGLE: 90.0 DEGREES
CONNECTION TYPE: THREADED EXTERNAL BOSS SECOND END
NOMINAL THREAD SIZE: 0.750 INCHES ALL ENDS IN
SEAT ANGLE: 37.0 DEGREES FIRST END
FURNISHED ITEMS AND QUANTITY: 1 LOCKNUT AND 1 PREFORMED PACKING AND 1 FLAT WASHER
THREAD SERIES DESIGNATOR: UNF ALL ENDS
CONNECTION STYLE: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
TECHNICAL CHARACTERISTICS (FLIS)
FLOW ANGLE90.0 DEGREES
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
NOMINAL THREAD SIZE0.750 INCHES ALL ENDS IN
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
SEAT ANGLE37.0 DEGREES FIRST END
FURNISHED ITEMS AND QUANTITY1 LOCKNUT AND 1 PREFORMED PACKING AND 1 FLAT WASHER
THREAD SERIES DESIGNATORUNF ALL ENDS
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
LEG LENGTH1.219 INCHES NOMINAL FIRST END IN
LEG LENGTH1.438 INCHES NOMINAL SECOND END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
125-267Interchangeable
interchangeable cross-reference
interchangeable
2918Interchangeable
interchangeable cross-reference
interchangeable
334397Interchangeable
interchangeable cross-reference
interchangeable
8464Interchangeable
interchangeable cross-reference
interchangeable
666157-164Interchangeable
interchangeable cross-reference
interchangeable
406718Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 53673C4?
53673C4 is a ELBOW,TUBE TO BOSS.
What parts can replace 53673C4?
There are 11 known substitutes for 53673C4: 125-267, 2918, 334397 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 53673C4?
53673C4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-785-8155. This indicates validated use in U.S. government and defense supply chains.
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