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Technical Data Sheet
AT-4 ✓ 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 BRUSH SET,ELECTRICAL CONTACT is a the manufacturer industrial component. Key specifications include diameter: 0.121 INCHES NOMINAL STOCK IN, end_type: TERMINAL ATTACHMENT BOTH ENDS, material: STEEL ALL ATTACHMENTS, body_style: UNSHIELDED,SOLID OR THREADED POST,GASKET SEAT, reach_length: 0.375 INCHES NOMINAL IN, usage_design: ENGINE OTHER THAN AIRCRAFT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6625-00-474-7644, 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
AT-4
NSN: 6625-00-474-7644
FSC: 6625
CAGE: 34840 — LANAGAN AND HOKE INC (USA)
SPECIFICATIONS
diameter0.121 INCHES NOMINAL STOCK IN
end_typeTERMINAL ATTACHMENT BOTH ENDS
materialSTEEL ALL ATTACHMENTS
body_styleUNSHIELDED,SOLID OR THREADED POST,GASKET SEAT
reach_length0.375 INCHES NOMINAL IN
usage_designENGINE OTHER THAN AIRCRAFT
bore_diameter0.2500 INCHES NOMINAL IN
alignment_typeRIGID
overall_length0.948 FEET NOMINAL FT
electrode_styleSINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4)
pressure_rating200.0 POUNDS PER SQUARE INCH (PSI) NOMINAL MEAN EFFECTIVE LBS
attachment_styleRING TERMINAL ATTACHMENT SECOND END
NSN6625-00-474-7644
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BRUSH SET,ELECTRICAL CONTACT TITLE COMPONENT PN AT-4 MFR BRUSH SET,ELECTRICAL C
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
AT4Interchangeable
interchangeable cross-reference
interchangeable
NAS290-4ANG25Interchangeable
interchangeable cross-reference
interchangeable
4NBC612Interchangeable
interchangeable cross-reference
interchangeable
4NBC612ANG25Interchangeable
interchangeable cross-reference
interchangeable
T28Interchangeable
interchangeable cross-reference
interchangeable
5200-16-14-20-21Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AT-4?
AT-4 is a BRUSH SET,ELECTRICAL CONTACT.
What parts can replace AT-4?
There are 8 known substitutes for AT-4: AT4, NAS290-4ANG25, 4NBC612 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AT-4?
AT-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6625-00-474-7644. This indicates validated use in U.S. government and defense supply chains.
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