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551AMA — Technical Data Sheet

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STEWART-WARNER CORPORATION · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

TACHOMETER,MECHANICAL,FIXED MOUN. Key specifications include MATERIAL: STEEL CORROSION RESISTING CASE, UNIT TYPE: MAGNETIC, CASE SHAPE: ROUND, MOUNTING TYPE: PANEL, OVERALL DEPTH: 2.656 INCHES NOMINAL IN, POINTER COLOR: WHITE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6680-00-542-1273, 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
551AMA
NSN: 6680-00-542-1273
FSC: 6680
CAGE: 57733 — STEWART-WARNER CORPORATION (USA)
SPECIFICATIONS
MATERIALSTEEL CORROSION RESISTING CASE
UNIT TYPEMAGNETIC
CASE SHAPEROUND
DIAL QUANTITY1
MOUNTING TYPEPANEL
OVERALL DEPTH2.656 INCHES NOMINAL IN
POINTER COLORWHITE
SCALE QUANTITY1
GRADUATION UNIT1.0 HOURS OPERATED
OPERATING RANGE+0.0 TO 4500.0 REVOLUTIONS PER MINUTE
OVERALL DIAMETER2.843 INCHES NOMINAL IN
POINTER QUANTITY1
NSN6680-00-542-1273
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: STEWART-WARNER CORPORATION TACHOMETER,MECHANICAL,FIXED MOUN TITLE COMPONENT PN 551AMA MFR STEWART-WARNER CORPORATION TACHOMETER,MECHANICAL,
KEY FEATURES
•
MOUNTING TYPE: PANEL
•
SCALE SMALLEST INCREMENT: 100.0 REVOLUTIONS PER MINUTE
•
CASE SHAPE: ROUND
•
DIAL BACKGROUND COLOR: BLACK
•
MATERIAL: STEEL CORROSION RESISTING CASE
•
MINOR GRADUATION COLOR: WHITE
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: ANSZ,BGPD,ADAV,BGPH,ABFY
•
POINTER QUANTITY: 1
TECHNICAL CHARACTERISTICS (FLIS)
MOUNTING TYPEPANEL
SCALE SMALLEST INCREMENT100.0 REVOLUTIONS PER MINUTE
CASE SHAPEROUND
DIAL BACKGROUND COLORBLACK
MATERIALSTEEL CORROSION RESISTING CASE
MINOR GRADUATION COLORWHITE
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSANSZ,BGPD,ADAV,BGPH,ABFY
POINTER QUANTITY1
SCALE MEASUREMENT RANGE+0.0 TO 45.0
GRADUATION UNIT1.0 HOURS OPERATED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
RS50Interchangeable
interchangeable cross-reference
interchangeable
RS50EInterchangeable
interchangeable cross-reference
interchangeable
551-AMBInterchangeable
interchangeable cross-reference
interchangeable
10191Interchangeable
interchangeable cross-reference
interchangeable
567LInterchangeable
interchangeable cross-reference
interchangeable
551Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 551AMA?
551AMA is a TACHOMETER,MECHANICAL,FIXED MOUN manufactured by STEWART-WARNER CORPORATION.
What parts can replace 551AMA?
There are 6 known substitutes for 551AMA: RS50, RS50E, 551-AMB and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 551AMA?
551AMA is cataloged in the Federal Logistics Information System (FLIS) under NSN 6680-00-542-1273. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026