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Technical Data Sheet
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ST57D113 ✓ 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,FLANGE TO HOSE is a the manufacturer industrial component. Key specifications include material: STEEL, thickness: 0.620 INCHES NOMINAL IN, recess_depth: 0.355 INCHES NOMINAL IN, flange_length: 3.938 INCHES MINIMUM AND 4.062 INCHES MAXIMUM IN, recess_diameter: 2.844 INCHES NOMINAL IN, special_features: WEAPON SYSTEM ESSENTIAL;ONE HALF OF SPLIT FLNAGE KIT 4730-01-056-8125,P/N FF593-323. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-155-4089, 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
ST57D113
NSN: 4730-01-155-4089
FSC: 4730
CAGE: 04236 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
materialSTEEL
thickness0.620 INCHES NOMINAL IN
recess_depth0.355 INCHES NOMINAL IN
flange_length3.938 INCHES MINIMUM AND 4.062 INCHES MAXIMUM IN
recess_diameter2.844 INCHES NOMINAL IN
special_featuresWEAPON SYSTEM ESSENTIAL;ONE HALF OF SPLIT FLNAGE KIT 4730-01-056-8125,P/N FF593-323
style_designatorBOLT HOLE CONNECTOR PLATE
surface_treatmentCHROMATE AND ZINC
bolt_hole_diameter0.531 INCHES NOMINAL IN
bolt_hole_quantity2
flange_section_styleRAISED FACED, DISHED
end_item_identificationWSDC SVA-ROUGH TERRAIN CONTAINER CRANE,X009
NSN4730-01-155-4089
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: ST57D113 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
X2471Interchangeable
interchangeable cross-reference
interchangeable
90EFS-S1602SF-1616Interchangeable
interchangeable cross-reference
interchangeable
J518Interchangeable
interchangeable cross-reference
interchangeable
66409AXInterchangeable
interchangeable cross-reference
interchangeable
FF593Interchangeable
interchangeable cross-reference
interchangeable
110124Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ST57D113?
ST57D113 is a ELBOW,FLANGE TO HOSE.
What parts can replace ST57D113?
There are 27 known substitutes for ST57D113: X2471, 90EFS-S1602SF-1616, J518 and 24 more. Substitute compatibility should be verified for your specific system.
Is ST57D113 still available?
ST57D113 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026