PartsTable
Technical Data Sheet
10557673-5 ✓ 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 REDUCER,TUBE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, seat_angle: 37.0 DEGREES FIRST END, reducer_type: CONCENTRIC, thread_class: 2A SECOND END A, connection_type: THREADED EXTERNAL TUBE SECOND END, connection_style: FLARED (TUBE) 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 4730-01-068-5416, 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
10557673-5
NSN: 4730-01-068-5416
FSC: 4730
CAGE: 56161 — GENERAL DYNAMICS LAND SYSTEMS CANADACORP (CAN)
SPECIFICATIONS
materialSTEEL OVERALL
seat_angle37.0 DEGREES FIRST END
reducer_typeCONCENTRIC
thread_class2A SECOND END A
connection_typeTHREADED EXTERNAL TUBE SECOND END
connection_styleFLARED (TUBE) SECOND END
surface_treatmentCADMIUM OVERALL
nominal_thread_size1.625 INCHES FIRST END IN
nominal_overall_length1.594 INCHES IN
end_item_identificationAIRCRAFT; SUPPORT EQUIPMENT, F-4
thread_quantity_per_inch12 SECOND END
thread_series_designatorUN FIRST END
NSN4730-01-068-5416
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 10557673-5 · 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
NOMINAL OVERALL LENGTH: 1.594 INCHES IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 1.250 INCHES FIRST END IN
NOMINAL THREAD SIZE: 1.312 INCHES SECOND END IN
THREAD QUANTITY PER INCH: 12 FIRST END
MATERIAL: STEEL OVERALL
CONNECTION STYLE: FLARED (TUBE) SECOND END
REDUCER TYPE: CONCENTRIC
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL OVERALL LENGTH1.594 INCHES IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.250 INCHES FIRST END IN
NOMINAL THREAD SIZE1.312 INCHES SECOND END IN
THREAD QUANTITY PER INCH12 FIRST END
MATERIALSTEEL OVERALL
NOMINAL THREAD SIZE1.625 INCHES FIRST END IN
CONNECTION STYLEFLARED (TUBE) SECOND END
REDUCER TYPECONCENTRIC
THREAD QUANTITY PER INCH12 SECOND END
THREAD SERIES DESIGNATORUN SECOND END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
7347Interchangeable
interchangeable cross-reference
interchangeable
51X140Interchangeable
interchangeable cross-reference
interchangeable
X54-32Interchangeable
interchangeable cross-reference
interchangeable
585S42Interchangeable
interchangeable cross-reference
interchangeable
WE2345Interchangeable
interchangeable cross-reference
interchangeable
73478Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10557673-5?
10557673-5 is a REDUCER,TUBE.
What parts can replace 10557673-5?
There are 15 known substitutes for 10557673-5: 7347, 51X140, X54-32 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 10557673-5?
10557673-5 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-068-5416. This indicates validated use in U.S. government and defense supply chains.
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