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Technical Data Sheet
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6660 ✓ 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 RELAY,UNDER FREQUENCY is a the manufacturer industrial component. Key specifications include shape: CUP, height: 3.125 INCHES NOMINAL IN, end_type: THREADED FEMALE, material: RUBBER OVERALL, thickness: 0.156 INCHES NOMINAL IN, unit_type: WIRE WOUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6210-00-117-4268, 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
6660
NSN: 6210-00-117-4268
FSC: 6210
CAGE: 72421 — SIGMA INSTRUMENTS INC FISHER-PIERCE DIV (USA)
SPECIFICATIONS
shapeCUP
height3.125 INCHES NOMINAL IN
end_typeTHREADED FEMALE
materialRUBBER OVERALL
thickness0.156 INCHES NOMINAL IN
unit_typeWIRE WOUND
hand_colorANY ACCEPTABLE
shank_typeTHREADED
timer_typeMECHANICAL
design_typeSINGLE FOOT
holding_clipINCLUDED
specific_useHEEL PRESSURE RELIEF
NSN6210-00-117-4268
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RELAY,UNDER FREQUENCY TITLE COMPONENT PN 6660 MFR RELAY,UNDER FREQUENCY
KEY FEATURES
•
USAGE DESIGN: OUTDOOR
•
OPERATING FUNCTION AND METHOD: ACTUATION LIGHT INTENSITY AND DEACTUATION LIGHT INTENSITY
•
LIGHT INTENSITY RANGE AND FUNCTION: +0.7 TO 1.7 ACTUATION FOOTCANDLE
•
OUTSIDE DIAMETER: 4.000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLUG-IN PHOTOCELL
•
HEIGHT: 3.125 INCHES NOMINAL IN
•
INCLOSURE MATERIAL: PLASTIC
•
FEATURES PROVIDED: ADJUSTABLE LIGHT INTENSITY ACTUATION CONTROL
TECHNICAL CHARACTERISTICS (FLIS)
USAGE DESIGNOUTDOOR
OPERATING FUNCTION AND METHODACTUATION LIGHT INTENSITY AND DEACTUATION LIGHT INTENSITY
LIGHT INTENSITY RANGE AND FUNCTION+0.7 TO 1.7 ACTUATION FOOTCANDLE
OUTSIDE DIAMETER4.000 INCHES NOMINAL IN
STYLE DESIGNATORPLUG-IN PHOTOCELL
HEIGHT3.125 INCHES NOMINAL IN
INCLOSURE MATERIALPLASTIC
FEATURES PROVIDEDADJUSTABLE LIGHT INTENSITY ACTUATION CONTROL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
JAN6146W7212Interchangeable
interchangeable cross-reference
interchangeable
290-1378P1Interchangeable
interchangeable cross-reference
interchangeable
084-20024-010Interchangeable
interchangeable cross-reference
interchangeable
6146Interchangeable
interchangeable cross-reference
interchangeable
MIL-E-1/1667Interchangeable
interchangeable cross-reference
interchangeable
DMS 81051BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6660?
6660 is a RELAY,UNDER FREQUENCY.
What parts can replace 6660?
There are 23 known substitutes for 6660: JAN6146W7212, 290-1378P1, 084-20024-010 and 20 more. Substitute compatibility should be verified for your specific system.
Is 6660 still available?
6660 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026