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Technical Data Sheet
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9J3691 — Technical Data Sheet

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— · 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

CLAMP,PIPE,ANCHOR AND REINFORCEM. Key specifications include gasket: NOT INCLUDED, overall_length: 58.500 INCHES NOMINAL IN, construction_type: TWO PIECE. This part is cataloged in the Federal Logistics Information System under NSN 4730-01-185-4486, 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
9J3691
NSN: 4730-01-185-4486
FSC: 4730
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
gasketNOT INCLUDED
overall_length58.500 INCHES NOMINAL IN
construction_typeTWO PIECE
NSN4730-01-185-4486
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 9J3691 · 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
•
CONSTRUCTION TYPE: TWO PIECE
•
GASKET: NOT INCLUDED
TECHNICAL CHARACTERISTICS
CONSTRUCTION TYPETWO PIECE
OVERALL LENGTH58.500 INCHES NOMINAL IN
GASKETNOT INCLUDED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
MI38InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
M1-38InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
27765InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
F6771P13InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
B-5919-1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 9J3691?
9J3691 is a CLAMP,PIPE,ANCHOR AND REINFORCEM.
What parts can replace 9J3691?
There are 5 known substitutes for 9J3691: MI38, M1-38, 27765 and 2 more. Substitute compatibility should be verified for your specific system.
Is 9J3691 still available?
9J3691 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: October 2026