1857746 — GENERATOR,TACHOMETER

✓ Government record, cited

NAVAL SEA SYSTEMS COMMAND · COMPONENT

PRODUCT OVERVIEW

1857746: GENERATOR,TACHOMETER.

The GENERATOR,TACHOMETER is a NAVAL SEA SYSTEMS COMMAND industrial component. Key specifications include OVERALL WIDTH: 2.500 INCHES IN, OVERALL LENGTH: 4.000 INCHES IN, SHAFT DIAMETER: UNABLE TO DECODE, SPECIAL FEATURES: ADDITIONAL SHAFT ROTATION DIRECTION COUNTERCLOCKWISE, ELECTRICAL RESISTANCE: 470.0 OHMS, CALIBRATION SPEED IN RPM: 1000.0. This part is cataloged in the U.S.

Government catalog under NSN 6680-00-677-3262, 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

1857746

NSN: 6680-00-677-3262
FSC: 6680 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)

SPECIFICATIONS

OVERALL WIDTH	2.500 INCHES IN
OVERALL LENGTH	4.000 INCHES IN
SHAFT DIAMETER	UNABLE TO DECODE
SPECIAL FEATURES	ADDITIONAL SHAFT ROTATION DIRECTION COUNTERCLOCKWISE
ELECTRICAL RESISTANCE	470.0 OHMS
CALIBRATION SPEED IN RPM	1000.0
SHAFT END CHARACTERISTIC	UNABLE TO DECODE
SHAFT ROTATION DIRECTION	UNABLE TO DECODE
ROTOR SPEED RATING IN RPM	12000.0 HIGH FULL LOAD
TERMINAL TYPE AND QUANTITY	4 WIRE LEAD
LENGTH OF SHAFT FROM HOUSING	UNABLE TO DECODE
MOUNTING FACILITY TYPE AND QUANTITY	2 THREADED HOLE(S)
NSN	6680-00-677-3262

COMPONENT DIAGRAM

KEY FEATURES

•

MOUNTING FACILITY TYPE AND QUANTITY: 2 THREADED HOLE(S)

•

ELECTRICAL RESISTANCE: 470.0 OHMS

•

SHAFT DIAMETER: UNABLE TO DECODE

•

CALIBRATION SPEED IN RPM: 1000.0

•

SHAFT ROTATION DIRECTION: UNABLE TO DECODE

•

CALIBRATION VOLTAGE OUTPUT TYPE IN VOLTS: 33.8 AC

TECHNICAL CHARACTERISTICS

MOUNTING FACILITY TYPE AND QUANTITY	2 THREADED HOLE(S)
ELECTRICAL RESISTANCE	470.0 OHMS
SHAFT DIAMETER	UNABLE TO DECODE
OVERALL LENGTH	4.000 INCHES IN
CALIBRATION SPEED IN RPM	1000.0
SHAFT ROTATION DIRECTION	UNABLE TO DECODE
OVERALL WIDTH	2.500 INCHES IN
CALIBRATION VOLTAGE OUTPUT TYPE IN VOLTS	33.8 AC
SPECIAL FEATURES	ADDITIONAL SHAFT ROTATION DIRECTION COUNTERCLOCKWISE
LENGTH OF SHAFT FROM HOUSING	UNABLE TO DECODE

OTHER ITEMS IN FSC 6680 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

6680-00-000-0189 6680-00-001-1478 6680-00-001-1502 6680-00-001-1506 6680-00-001-1511 6680-00-001-3672 6680-00-001-3675 6680-00-001-4170

SUBSTITUTES & CROSS-REFERENCES 2

A3H504-1Reference document

Same NSN cross-reference

Reference document — Secondary reference

1011829Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 1857746?

1857746 is a GENERATOR,TACHOMETER manufactured by NAVAL SEA SYSTEMS COMMAND.

What parts can replace 1857746?

There are 2 known substitutes for 1857746: A3H504-1, 1011829. Substitute compatibility should be verified for your specific system.

What is the NSN for 1857746?

1857746 is cataloged in the U.S. Government catalog under NSN 6680-00-677-3262. This indicates validated use in U.S. government and defense supply chains.

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1857746 — GENERATOR,TACHOMETER

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