PartsTable
Technical Data Sheet
AD26 ✓ 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

SOCKET,PLUG-IN ELECTRONIC COMPON. Key specifications include material: STEEL OVERALL, body_style: TOP MOUNT, seat_angle: 37.0 DEGREES FIRST END, thread_class: 2A FIRST END A, overall_width: 0.745 INCHES NOMINAL IN, overall_height: 0.375 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-455-3785, 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
AD26
NSN: 4730-00-455-3785
FSC: 4730
CAGE: 17431 — ILLINOIS TOOL WORKS INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_styleTOP MOUNT
seat_angle37.0 DEGREES FIRST END
thread_class2A FIRST END A
overall_width0.745 INCHES NOMINAL IN
overall_height0.375 INCHES NOMINAL IN
overall_length1.406 INCHES NOMINAL IN
connection_typeTHREADED EXTERNAL TUBE FIRST END
mounting_methodUNTHREADED HOLE(S)
terminal_length0.200 INCHES NOMINAL IN
connection_styleINVERTED FLARE (TUBE) FIRST END
polarization_typeCONTACT SHAPE
NSN4730-00-455-3785
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AD26 · 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 SERIES DESIGNATOR: NPT SECOND END
THREAD QUANTITY PER INCH: 18 FIRST END
NOMINAL THREAD SIZE: 0.375 INCHES SECOND END IN
SEAT ANGLE: 37.0 DEGREES FIRST END
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORNPT SECOND END
THREAD QUANTITY PER INCH18 FIRST END
NOMINAL THREAD SIZE0.375 INCHES SECOND END IN
THREAD SERIES DESIGNATORUNS FIRST END
SEAT ANGLE37.0 DEGREES FIRST END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
MATERIALSTEEL OVERALL
NOMINAL THREAD SIZE0.500 INCHES FIRST END IN
THREAD CLASS2A FIRST END A
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.312 INCHES FIRST END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
70-307Interchangeable
interchangeable cross-reference
interchangeable
AD26Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AD26?
AD26 is a SOCKET,PLUG-IN ELECTRONIC COMPON.
What parts can replace AD26?
There are 2 known substitutes for AD26: 70-307, AD26. Substitute compatibility should be verified for your specific system.
What is the NSN for AD26?
AD26 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-455-3785. This indicates validated use in U.S. government and defense supply chains.
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