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7266818 — CAP,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

7266818: CAP,TUBE.

The CAP,TUBE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140 OVERALL, thread_class: 3A EXTERNAL A, connection_style: PLAIN, style_designator: CAP, TUBE, FLARED, thread_direction: RIGHT-HAND EXTERNAL, nominal_thread_size: 1.440 INCHES EXTERNAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-476-1712, 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
7266818
NSN: 4730-01-476-1712
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 19200 — COMBAT CAPABILITIES DEVELOPMENT COMMAND (CCDC) ARMAMENTS CENTER DBA CCDC DIV LOGISTICS RESEARCH AND ENGINEERING DIRECTORATE (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OVERALL
thread_class3A EXTERNAL A
connection_stylePLAIN
style_designatorCAP, TUBE, FLARED
thread_directionRIGHT-HAND EXTERNAL
nominal_thread_size1.440 INCHES EXTERNAL IN
thread_pitch_diameters+1.4159 TO 1.4197 INCHES EXTERNAL IN
end_item_identification1005-00-726-6820
thread_quantity_per_inch32 EXTERNAL
thread_series_designatorUNS EXTERNAL
material_document_and_classificationQQ-S-634, 1045 FED SPEC 1ST MATERIAL RESPONSE OR QQ-6-624, 4140 FED SPEC 2ND MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyCAP,BUFFER TUBE
NSN4730-01-476-1712
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 7266818 · 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
•
CONNECTION STYLE: PLAIN
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 1.590 INCHES MINIMUM AND 1.600 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: CAP, TUBE, FLARED
•
THREAD PITCH DIAMETERS: +1.4159 TO 1.4197 INCHES EXTERNAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-634, 1045 FED SPEC 1ST MATERIAL RESPONSE OR QQ-6-624, 4140 FED SPEC 2ND MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND EXTERNAL
•
NOMINAL THREAD SIZE: 1.440 INCHES EXTERNAL IN
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPLAIN
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED1.590 INCHES MINIMUM AND 1.600 INCHES MAXIMUM IN
STYLE DESIGNATORCAP, TUBE, FLARED
THREAD PITCH DIAMETERS+1.4159 TO 1.4197 INCHES EXTERNAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-634, 1045 FED SPEC 1ST MATERIAL RESPONSE OR QQ-6-624, 4140 FED SPEC 2ND MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND EXTERNAL
NOMINAL THREAD SIZE1.440 INCHES EXTERNAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYCAP,BUFFER TUBE
THREAD CLASS3A EXTERNAL A
END ITEM IDENTIFICATION1005-00-726-6820
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7266818?
7266818 is a CAP,TUBE.
What is the NSN for 7266818?
7266818 is cataloged in the U.S. Government catalog under NSN 4730-01-476-1712. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.