12890D18 — SLEEVE,SHAFT,PUMP

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

12890D18: SLEEVE,SHAFT,PUMP.

The SLEEVE,SHAFT,PUMP is a the manufacturer industrial component. Key specifications include material: TITANIUM OVERALL, corner_shape: CHAMFERED INSIDE LEFT CORNER, flange_width: 0.1200 INCHES NOMINAL IN, overall_length: 4.0000 INCHES NOMINAL IN, keyway_dimension: 2.1050 INCHES NOMINAL INTERNAL KEYWAY LENGTH IN, special_features: TWO EXR KEYWAY SLOTS 180.0DEG APART; EXT STEP 4.000DIA LOCATED 0.880IN. FROM FLANGE, 0.870IN.W;WEAPON SYSTEM ESENTIAL IN.

This part is cataloged in the U.S. Government catalog under NSN 4320-01-380-2610, 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

12890D18

NSN: 4320-01-380-2610
FSC: 4320 — Power and Hand Pumps
CAGE: 0UBG9 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DIV EPD (USA)

SPECIFICATIONS

material	TITANIUM OVERALL
corner_shape	CHAMFERED INSIDE LEFT CORNER
flange_width	0.1200 INCHES NOMINAL IN
overall_length	4.0000 INCHES NOMINAL IN
keyway_dimension	2.1050 INCHES NOMINAL INTERNAL KEYWAY LENGTH IN
special_features	TWO EXR KEYWAY SLOTS 180.0DEG APART; EXT STEP 4.000DIA LOCATED 0.880IN. FROM FLANGE, 0.870IN.W;WEAPON SYSTEM ESENTIAL IN
style_designator	SOLID, EXTERNAL FLANGE ONE END
body_inside_diameter	3.0005 INCHES NOMINAL IN
body_outside_diameter	3.7500 INCHES NOMINAL IN
supplementary_features	MERCURY FREE
end_item_identification	WEAPONS SYSTEM CODE EX, LOS ANGLES CLASS SSN (688)3
flange_outside_diameter	4.5000 INCHES NOMINAL IN
NSN	4320-01-380-2610

COMPONENT DIAGRAM

KEY FEATURES

•

CORNER SHAPE: CHAMFERED INSIDE LEFT CORNER

•

FLANGE OUTSIDE DIAMETER: 4.5000 INCHES NOMINAL IN

•

BODY OUTSIDE DIAMETER: 3.7500 INCHES NOMINAL IN

•

SUPPLEMENTARY FEATURES: MERCURY FREE

•

CRITICALITY CODE JUSTIFICATION: FEAT

TECHNICAL CHARACTERISTICS

CORNER SHAPE	CHAMFERED INSIDE LEFT CORNER
CORNER SHAPE	SQUARE INSIDE RIGHT CORNER
CORNER SHAPE	SQUARE OUTSIDE RIGHT CORNER
CORNER SHAPE	SQUARE OUTSIDE LEFT CORNER
FLANGE OUTSIDE DIAMETER	4.5000 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER	3.7500 INCHES NOMINAL IN
SUPPLEMENTARY FEATURES	MERCURY FREE
CRITICALITY CODE JUSTIFICATION	FEAT
STYLE DESIGNATOR	SOLID, EXTERNAL FLANGE ONE END
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM B348,GR2 ASSN STD ALL MATERIAL RESPONSES AND ASTM B348,GR3 ASSN STD ALL MATERIAL RESPONSES OVERALL

SUBSTITUTES & CROSS-REFERENCES 3

12132F18-8BSame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

300S8CYX4Reference document

Same NSN cross-reference

Reference document — Secondary reference

12132F18Reference document

Same NSN cross-reference

Reference document — Drawing number reference only

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 12890D18?

12890D18 is a SLEEVE,SHAFT,PUMP.

What parts can replace 12890D18?

There are 3 known substitutes for 12890D18: 12132F18-8B, 300S8CYX4, 12132F18. Substitute compatibility should be verified for your specific system.

What is the NSN for 12890D18?

12890D18 is cataloged in the U.S. Government catalog under NSN 4320-01-380-2610. This indicates validated use in U.S. government and defense supply chains.

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12890D18 — SLEEVE,SHAFT,PUMP

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