R-657 — HEAD,HYDRAULIC MOTOR-PUMP

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

R-657: HEAD,HYDRAULIC MOTOR-PUMP.

The HEAD,HYDRAULIC MOTOR-PUMP is a the manufacturer industrial component. Key specifications include material: IRON CAST, connection_size: 3.250 INCHES IN, connection_type: FLANGE, special_features: 70-30 COPPER NICKEL MIXTURE, end_item_identification: WARREN PUMP MODEL 1-1/2-2CV-6 PUMP. This part is cataloged in the U.S.

Government catalog under NSN 4320-01-185-6746, 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

R-657

NSN: 4320-01-185-6746
NIINs: 011856746, 011856753, 011856754
FSC: 4320 — Power and Hand Pumps
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)

SPECIFICATIONS

material	IRON CAST
connection_size	3.250 INCHES IN
connection_type	FLANGE
special_features	70-30 COPPER NICKEL MIXTURE
end_item_identification	WARREN PUMP MODEL 1-1/2-2CV-6 PUMP
NSN	4320-01-185-6746

COMPONENT DIAGRAM

KEY FEATURES

•

MATERIAL: COPPER ALLOY

TECHNICAL CHARACTERISTICS

SPECIAL FEATURES	70-30 COPPER NICKEL MIXTURE
END ITEM IDENTIFICATION	WARREN PUMP MODEL 1-1/2-2CV-6 PUMP
MATERIAL	COPPER ALLOY

SUBSTITUTES & CROSS-REFERENCES 2

JJ161Reference document

Same NSN cross-reference

Reference document — Secondary reference

R657 PIECE 1-2-3Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is R-657?

R-657 is a HEAD,HYDRAULIC MOTOR-PUMP.

What parts can replace R-657?

There are 2 known substitutes for R-657: JJ161, R657 PIECE 1-2-3. Substitute compatibility should be verified for your specific system.

What is the NSN for R-657?

R-657 is cataloged in the U.S. Government catalog under NSN 4320-01-185-6746. This indicates validated use in U.S. government and defense supply chains.

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R-657 — HEAD,HYDRAULIC MOTOR-PUMP

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