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Technical Data Sheet
PartsTable / COMPONENT / 3751-24D
3751-24D ✓ 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 is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY AND RUBBER SYNTHETIC BODY, flow_angle: 90.0 DEGREES, leg_length: 2.438 INCHES NOMINAL ALL ENDS IN, thread_class: 2A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE ALL ENDS, connection_style: PLAIN (TUBE) ALL ENDS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-876-5540, 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
3751-24D
NSN: 4730-00-876-5540
FSC: 4730
CAGE: 79326 — TRANSDIGM INC DIV ADELWIGGINS GROUP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY AND RUBBER SYNTHETIC BODY
flow_angle90.0 DEGREES
leg_length2.438 INCHES NOMINAL ALL ENDS IN
thread_class2A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
connection_stylePLAIN (TUBE) ALL ENDS
surface_treatmentANODIZE INSIDE
nominal_thread_size1.875 INCHES ALL ENDS IN
thread_series_designatorUNF ALL ENDS
furnished_items_and_quantity2 COUPLING NUT
nominal_outside_diameter_tube_accommodated1.500 INCHES ALL ENDS IN
surface_treatment_document_and_classificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE INSIDE
NSN4730-00-876-5540
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3751-24D · 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
•
THREAD CLASS: 2A ALL ENDS A
•
FLOW ANGLE: 90.0 DEGREES
•
SURFACE TREATMENT: ANODIZE INSIDE
•
CONNECTION STYLE: PLAIN (TUBE) ALL ENDS
•
NOMINAL THREAD SIZE: 1.875 INCHES ALL ENDS IN
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 1.500 INCHES ALL ENDS IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE INSIDE
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2A ALL ENDS A
FLOW ANGLE90.0 DEGREES
SURFACE TREATMENTANODIZE INSIDE
CONNECTION STYLEPLAIN (TUBE) ALL ENDS
NOMINAL THREAD SIZE1.875 INCHES ALL ENDS IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.500 INCHES ALL ENDS IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE INSIDE
SURFACE TREATMENTANODIZE OUTSIDE
MATERIALALUMINUM ALLOY AND RUBBER SYNTHETIC BODY
FURNISHED ITEMS AND QUANTITY2 COUPLING NUT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
09912M1Interchangeable
interchangeable cross-reference
interchangeable
3751Interchangeable
interchangeable cross-reference
interchangeable
221ZInterchangeable
interchangeable cross-reference
interchangeable
1333Interchangeable
interchangeable cross-reference
interchangeable
5KSP39FG4932TInterchangeable
interchangeable cross-reference
interchangeable
SM-C-861020Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3751-24D?
3751-24D is a ELBOW,TUBE.
What parts can replace 3751-24D?
There are 11 known substitutes for 3751-24D: 09912M1, 3751, 221Z and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3751-24D?
3751-24D is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-876-5540. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026