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PartsTable / COMPONENT / 3685-1
3685-1 ✓ Verified by PartsTable
— · 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 TRANSFORMER,ELECTRI is a the manufacturer industrial component. Key specifications include material: STEEL, shoulder_width: 0.250 INCHES NOMINAL IN, style_designator: DOUBLE HUB W/ SECRING HOLE(S), surface_treatment: CHROMATE, hub_inside_diameter: 0.625 INCHES NOMINAL IN, shoulder_outside_diameter: 2.500 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6680-00-012-2646, 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
3685-1
NSN: 6680-00-012-2646
FSC: 6680
CAGE: 57733 — STEWART-WARNER CORPORATION (USA)
SPECIFICATIONS
materialSTEEL
shoulder_width0.250 INCHES NOMINAL IN
special_featuresFOUR THREADED FAN MTG HOLES AROUND SHOULDER 0.190-32 UNF 2B,R/H,EQUALLY SPACED ON 2.125 IN.DIA BOLT CIRCLE;ATTACHMENT METHOD:KEYWAY;O/A LENGTH:0.658 IN.NOM IN
style_designatorDOUBLE HUB W/ SECRING HOLE(S)
surface_treatmentCHROMATE
hub_inside_diameter0.625 INCHES NOMINAL IN
shoulder_outside_diameter2.500 INCHES NOMINAL IN
first_end_hub_outside_diameter1.565 INCHES NOMINAL IN
second_end_hub_outside_diameter1.625 INCHES NOMINAL IN
distance_from_first_end_hub_to_shoulder0.220 INCHES NOMINAL IN
distance_from_second_end_hub_to_shoulder0.194 INCHES NOMINAL IN
general_characteristics_item_description99999 RECORD GAL.; SCALE RANGES 1 TO 16 QT MOTOR OIL; POINTER; 4 EA MTG SCREWS
NSN6680-00-012-2646
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,ELECTRI TITLE COMPONENT PN 3685-1 MFR TRANSFORMER,ELECTRI
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: 99999 RECORD GAL.; SCALE RANGES 1 TO 16 QT MOTOR OIL; POINTER; 4 EA MTG SCREWS
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTION99999 RECORD GAL.; SCALE RANGES 1 TO 16 QT MOTOR OIL; POINTER; 4 EA MTG SCREWS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
TMT-99-38Interchangeable
interchangeable cross-reference
interchangeable
5110-00-440-7996Interchangeable
interchangeable cross-reference
interchangeable
127-691Interchangeable
interchangeable cross-reference
interchangeable
3685Interchangeable
interchangeable cross-reference
interchangeable
A172036851Interchangeable
interchangeable cross-reference
interchangeable
36851Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3685-1?
3685-1 is a TRANSFORMER,ELECTRI.
What parts can replace 3685-1?
There are 13 known substitutes for 3685-1: TMT-99-38, 5110-00-440-7996, 127-691 and 10 more. Substitute compatibility should be verified for your specific system.
Is 3685-1 still available?
3685-1 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026