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ST57D69 — ADAPTER,STRAIGHT,PIPE TO TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

ST57D69: ADAPTER,STRAIGHT,PIPE TO TUBE.

The ADAPTER,STRAIGHT,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, seat_angle: 37.0 DEGREES FIRST END, thread_class: 2A FIRST END BULKHEAD A, connection_type: THREADED EXTERNAL TUBE FIRST END, connection_style: PLAIN (PIPE) SECOND END, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-235-3569, 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
ST57D69
NSN: 4730-01-235-3569
NIINs: 012353569, 012422834, 012691552
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 04236 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
seat_angle37.0 DEGREES FIRST END
thread_class2A FIRST END BULKHEAD A
connection_typeTHREADED EXTERNAL TUBE FIRST END
connection_stylePLAIN (PIPE) SECOND END
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.562 INCHES FIRST END IN
nominal_overall_length2.060 INCHES IN
media_for_which_designedFLUID SINGLE RESPONSE
thread_quantity_per_inch12 FIRST END BULKHEAD
thread_series_designatorNPTF SECOND END
furnished_items_and_quantity1 LOCKNUT
NSN4730-01-235-3569
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: ST57D69 · 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 LOCKNUT
•
CONNECTION STYLE: FLARED (TUBE) FIRST END BULKHEAD
•
NOMINAL OVERALL LENGTH: 3.250 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END BULKHEAD
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 1.000 INCHES FIRST END BULKHEAD IN
•
NOMINAL THREAD SIZE: 1.312 INCHES FIRST END BULKHEAD IN
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY1 LOCKNUT
CONNECTION STYLEFLARED (TUBE) FIRST END BULKHEAD
CONNECTION STYLESWIVEL NUT INVERTED FLARE (PIPE) SECOND END
NOMINAL OVERALL LENGTH3.250 INCHES IN
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END BULKHEAD
CONNECTION TYPETHREADED INTERNAL PIPE SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.000 INCHES FIRST END BULKHEAD IN
NOMINAL THREAD SIZE1.312 INCHES FIRST END BULKHEAD IN
NOMINAL THREAD SIZE1.000 INCHES SECOND END IN
SEAT ANGLE37.0 DEGREES FIRST END BULKHEAD
SUBSTITUTES & CROSS-REFERENCES 2
16WGTX-WLN-SReference document
Same NSN cross-reference
Reference document — Secondary reference
ST57D69-3Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is ST57D69?
ST57D69 is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace ST57D69?
There are 2 known substitutes for ST57D69: 16WGTX-WLN-S, ST57D69-3. Substitute compatibility should be verified for your specific system.
What is the NSN for ST57D69?
ST57D69 is cataloged in the U.S. Government catalog under NSN 4730-01-235-3569. This indicates validated use in U.S. government and defense supply chains.
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