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PartsTable / COMPONENT / 4253-138-6
4253-138-6 ✓ 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 TEE,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, face_width: 0.375 INCHES NOMINAL IN, ring_style: EXPANDING CONCENTRIC, shaft_type: SHOULDERED, joint_style: DIAGONAL JOINT, blade_length: 1.000 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 4730-00-994-8810, 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
4253-138-6
NSN: 4730-00-994-8810
FSC: 4730
CAGE: 83395 — CONSOLIDATED WELDING AND ENGINEERING CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
face_width0.375 INCHES NOMINAL IN
ring_styleEXPANDING CONCENTRIC
shaft_typeSHOULDERED
joint_styleDIAGONAL JOINT
blade_length1.000 INCHES NOMINAL IN
corner_shapeSQUARE INSIDE RIGHT CORNER
flange_width0.0600 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN
gear_materialSTEEL
overall_width3.000 INCHES NOMINAL IN
overall_length1.875 INCHES NOMINAL IN
pressure_angle20.0000 DEGREES
NSN4730-00-994-8810
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4253-138-6 · 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 11
10705Interchangeable
interchangeable cross-reference
interchangeable
N59921Interchangeable
interchangeable cross-reference
interchangeable
17389NInterchangeable
interchangeable cross-reference
interchangeable
43812Interchangeable
interchangeable cross-reference
interchangeable
37892Interchangeable
interchangeable cross-reference
interchangeable
P9783240PC16Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4253-138-6?
4253-138-6 is a TEE,PIPE.
What parts can replace 4253-138-6?
There are 11 known substitutes for 4253-138-6: 10705, N59921, 17389N and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4253-138-6?
4253-138-6 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-994-8810. 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