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ST57D74-2 — ELBOW,BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

ST57D74-2: ELBOW,BOSS.

The ELBOW,BOSS is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, flow_angle: 90.0 DEGREES, leg_length: 0.468 INCHES NOMINAL FIRST END IN, thread_class: 3A SECOND END A, connection_type: THREADED INTERNAL BOSS FIRST END, connection_style: GASKET SEAL (BOSS) FIRST END. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-910-3503, 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
ST57D74-2
NSN: 4730-00-910-3503
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 04236 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
flow_angle90.0 DEGREES
leg_length0.468 INCHES NOMINAL FIRST END IN
thread_class3A SECOND END A
connection_typeTHREADED INTERNAL BOSS FIRST END
connection_styleGASKET SEAL (BOSS) FIRST END
special_features2ND END THD DIRECTION R/H
nominal_thread_size0.190 INCHES FIRST END IN
fsc_application_dataNONN
thread_series_designatorUNF FIRST END
furnished_items_and_quantity1 GASKET
NSN4730-00-910-3503
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: ST57D74-2 · 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
•
FURNISHED ITEMS AND QUANTITY: 1 GASKET
•
FLOW ANGLE: 90.0 DEGREES
•
FSC APPLICATION DATA: NONN
•
CONNECTION STYLE: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
•
CONNECTION TYPE: THREADED INTERNAL BOSS FIRST END
•
LEG LENGTH: 0.468 INCHES NOMINAL FIRST END IN
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY1 GASKET
FLOW ANGLE90.0 DEGREES
FSC APPLICATION DATANONN
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
CONNECTION STYLEGASKET SEAL (BOSS) FIRST END
CONNECTION TYPETHREADED INTERNAL BOSS FIRST END
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
LEG LENGTH0.468 INCHES NOMINAL FIRST END IN
LEG LENGTH0.187 INCHES NOMINAL SECOND END IN
NOMINAL THREAD SIZE0.190 INCHES SECOND END IN
SUBSTITUTES & CROSS-REFERENCES 1
ST57D74Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ST57D74-2?
ST57D74-2 is a ELBOW,BOSS.
What parts can replace ST57D74-2?
There is 1 known substitute for ST57D74-2: ST57D74. Substitute compatibility should be verified for your specific system.
What is the NSN for ST57D74-2?
ST57D74-2 is cataloged in the U.S. Government catalog under NSN 4730-00-910-3503. This indicates validated use in U.S. government and defense supply chains.
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