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W977 — Technical Data Sheet

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WELLS MFG CO · 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

The CONTROL,TEMPERATURE,INDICATING is a WELLS MFG CO industrial component. Key specifications include POWER SOURCE: EXTERNAL, INDICATION METHOD: RECEIVING POINTER, TERMINAL LOCATION: TOP, SENSING ELEMENT TYPE: LINKED DIAPHRAGM INTERNAL, MAXIMUM OVERALL WIDTH: 1.875 INCHES IN, MAXIMUM OVERALL HEIGHT: 0.250 INCHES IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6685-00-989-4658, 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
W977
NSN: 6685-00-989-4658
FSC: 6685
CAGE: 87446 — WELLS MFG CO (USA)
SPECIFICATIONS
POWER SOURCEEXTERNAL
INDICATION METHODRECEIVING POINTER
TERMINAL LOCATIONTOP
SENSING ELEMENT TYPELINKED DIAPHRAGM INTERNAL
MAXIMUM OVERALL WIDTH1.875 INCHES IN
MAXIMUM OVERALL HEIGHT0.250 INCHES IN
MAXIMUM OVERALL LENGTH2.125 INCHES IN
END ITEM IDENTIFICATIONPOSEIDON MATERIAL
TERMINAL TYPE AND QUANTITY1 WIRE LEAD
NSN6685-00-989-4658
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: WELLS MFG CO CONTROL,TEMPERATURE,INDICATING TITLE COMPONENT PN W977 MFR WELLS MFG CO CONTROL,TEMPERATURE,IN
KEY FEATURES
•
MAXIMUM OVERALL HEIGHT: 0.250 INCHES IN
•
TERMINAL TYPE AND QUANTITY: 1 WIRE LEAD
•
MAXIMUM OVERALL WIDTH: 1.875 INCHES IN
•
INDICATION METHOD: RECEIVING POINTER
•
SENSING ELEMENT TYPE: LINKED DIAPHRAGM INTERNAL
•
TERMINAL LOCATION: TOP
•
MAXIMUM OVERALL LENGTH: 2.125 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
MAXIMUM OVERALL HEIGHT0.250 INCHES IN
END ITEM IDENTIFICATIONPOSEIDON MATERIAL
TERMINAL TYPE AND QUANTITY1 WIRE LEAD
MAXIMUM OVERALL WIDTH1.875 INCHES IN
INDICATION METHODRECEIVING POINTER
SENSING ELEMENT TYPELINKED DIAPHRAGM INTERNAL
TERMINAL LOCATIONTOP
MAXIMUM OVERALL LENGTH2.125 INCHES IN
POWER SOURCEEXTERNAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
SCB69637Interchangeable
interchangeable cross-reference
interchangeable
50458Interchangeable
interchangeable cross-reference
interchangeable
37649Interchangeable
interchangeable cross-reference
interchangeable
1683-009-2Interchangeable
interchangeable cross-reference
interchangeable
FP1368NInterchangeable
interchangeable cross-reference
interchangeable
P612Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is W977?
W977 is a CONTROL,TEMPERATURE,INDICATING manufactured by WELLS MFG CO.
What parts can replace W977?
There are 12 known substitutes for W977: SCB69637, 50458, 37649 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for W977?
W977 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6685-00-989-4658. 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