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745305B — ELBOW,BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

745305B: ELBOW,BOSS.

The ELBOW,BOSS is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY OVERALL, flow_angle: 90.0 DEGREES, leg_length: 2.282 INCHES MINIMUM AND 2.342 INCHES MAXIMUM SECOND END IN, thread_class: 3A SECOND END A, connection_type: THREADED EXTERNAL BOSS SECOND END, connection_style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) FIRST END. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-790-3407, 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
745305B
NSN: 4730-00-790-3407
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 03529 — AIR-A-PLANE CORP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
flow_angle90.0 DEGREES
leg_length2.282 INCHES MINIMUM AND 2.342 INCHES MAXIMUM SECOND END IN
thread_class3A SECOND END A
connection_typeTHREADED EXTERNAL BOSS SECOND END
connection_styleEXTERNAL SEAT FOR GASKET SEAL (BOSS) FIRST END
surface_treatmentANODIZE OVERALL
nominal_thread_size1.688 INCHES FIRST END IN
thread_series_designatorUNEF FIRST END
NSN4730-00-790-3407
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 745305B · 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 STYLE: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
•
CONNECTION TYPE: THREADED EXTERNAL BOSS FIRST END
•
LEG LENGTH: 2.282 INCHES MINIMUM AND 2.342 INCHES MAXIMUM SECOND END IN
•
NOMINAL THREAD SIZE: 1.688 INCHES FIRST END IN
TECHNICAL CHARACTERISTICS
FLOW ANGLE90.0 DEGREES
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) FIRST END
CONNECTION TYPETHREADED EXTERNAL BOSS FIRST END
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
LEG LENGTH2.282 INCHES MINIMUM AND 2.342 INCHES MAXIMUM SECOND END IN
LEG LENGTH2.386 INCHES MINIMUM AND 2.466 INCHES MAXIMUM FIRST END IN
NOMINAL THREAD SIZE1.688 INCHES FIRST END IN
NOMINAL THREAD SIZE1.688 INCHES SECOND END IN
SURFACE TREATMENTANODIZE OVERALL
SUBSTITUTES & CROSS-REFERENCES 2
D8497-12-4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
50031637Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 745305B?
745305B is a ELBOW,BOSS.
What parts can replace 745305B?
There are 2 known substitutes for 745305B: D8497-12-4, 50031637. Substitute compatibility should be verified for your specific system.
What is the NSN for 745305B?
745305B is cataloged in the U.S. Government catalog under NSN 4730-00-790-3407. This indicates validated use in U.S. government and defense supply chains.
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