PartsTable
Technical Data Sheet
3503-16-16B ✓ 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: 45.0 DEGREES, leg_length: 1.469 INCHES NOMINAL FIRST END IN, seat_angle: 37.0 DEGREES FIRST END, thread_class: 2A 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 4730-00-901-0676, 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
3503-16-16B
NSN: 4730-00-901-0676
FSC: 4730
CAGE: 98441 — PARKER HANNIFIN CORP DBA PNEUTRONICS DIV STRATOFLEX PRODUCTS DIVISION (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
flow_angle45.0 DEGREES
leg_length1.469 INCHES NOMINAL FIRST END IN
seat_angle37.0 DEGREES FIRST END
thread_class2A ALL ENDS A
connection_typeTHREADED EXTERNAL BOSS SECOND END
connection_styleFLARED (TUBE) FIRST END
nominal_thread_size1.312 INCHES ALL ENDS IN
thread_quantity_per_inch12 ALL ENDS
thread_series_designatorUN ALL ENDS
furnished_items_and_quantity1 TUBE COUPLING NUT W/SLEEVE AND 1 PREFORMED PACKING
nominal_outside_diameter_tube_accommodated1.000 INCHES FIRST END IN
NSN4730-00-901-0676
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3503-16-16B · 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
CONNECTION TYPE: THREADED EXTERNAL BOSS SECOND END
CONNECTION STYLE: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
NOMINAL THREAD SIZE: 1.312 INCHES ALL ENDS IN
THREAD QUANTITY PER INCH: 12 ALL ENDS
FLOW ANGLE: 45.0 DEGREES
THREAD CLASS: 2A ALL ENDS A
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
NOMINAL THREAD SIZE1.312 INCHES ALL ENDS IN
THREAD QUANTITY PER INCH12 ALL ENDS
CONNECTION STYLEFLARED (TUBE) FIRST END
FLOW ANGLE45.0 DEGREES
THREAD CLASS2A ALL ENDS A
MATERIALCOPPER ALLOY OVERALL
LEG LENGTH1.859 INCHES NOMINAL SECOND END IN
THREAD SERIES DESIGNATORUN ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
16-16 070320CInterchangeable
interchangeable cross-reference
interchangeable
SAE J514 16-16 070320CInterchangeable
interchangeable cross-reference
interchangeable
SAE-J514Interchangeable
interchangeable cross-reference
interchangeable
10504078Interchangeable
interchangeable cross-reference
interchangeable
2061-16Interchangeable
interchangeable cross-reference
interchangeable
16V5XSInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3503-16-16B?
3503-16-16B is a ELBOW,TUBE TO BOSS.
What parts can replace 3503-16-16B?
There are 9 known substitutes for 3503-16-16B: 16-16 070320C, SAE J514 16-16 070320C, SAE-J514 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3503-16-16B?
3503-16-16B is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-901-0676. This indicates validated use in U.S. government and defense supply chains.
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