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Technical Data Sheet
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57B3661 ✓ 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 CONNECTOR,OXYGEN MASK is a the manufacturer industrial component. Key specifications include fsc_application_data: OXYGEN BREATHING SYSTEM,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 1660-00-730-2247, 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
57B3661
NSN: 1660-00-730-2247
FSC: 1660
CAGE: 98748 — AIR FORCE UNITED STATES DEPARTMENT OF THE DBA TINKER AFB OC ALC DSP DIV DEPARTMENT OF THE AIR FORCE (USA)
SPECIFICATIONS
fsc_application_dataOXYGEN BREATHING SYSTEM,AIRCRAFT
general_characteristics_item_descriptionALUMINUM ALLOY,QQ&A&225-6,TEMPER T4,FINISH ALL OVER 63 MIRCON INCH,ANODIZE PER MIL&A&8625,TYPE II,CLASS 2,BLACK,1.137 IN. MIN 1.147 IN. MAXOD,0.615 IN. MIN 0.625 IN. MAX ID,1.688 IN. LG IN
NSN1660-00-730-2247
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CONNECTOR,OXYGEN MASK TITLE COMPONENT PN 57B3661 MFR CONNECTOR,OXYGEN MASK
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: ALUMINUM ALLOY,QQ&A&225-6,TEMPER T4,FINISH ALL OVER 63 MIRCON INCH,ANODIZE PER MIL&A&8625,TYPE II,CLASS 2,BLACK,1.137 IN. MIN 1.147 IN. MAXOD,0.615 IN. MIN 0.625 IN. MAX ID,1.688 IN. LG IN
•
FSC APPLICATION DATA: OXYGEN BREATHING SYSTEM,AIRCRAFT
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONALUMINUM ALLOY,QQ&A&225-6,TEMPER T4,FINISH ALL OVER 63 MIRCON INCH,ANODIZE PER MIL&A&8625,TYPE II,CLASS 2,BLACK,1.137 IN. MIN 1.147 IN. MAXOD,0.615 IN. MIN 0.625 IN. MAX ID,1.688 IN. LG IN
FSC APPLICATION DATAOXYGEN BREATHING SYSTEM,AIRCRAFT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
1675Interchangeable
interchangeable cross-reference
interchangeable
MILR10509BInterchangeable
interchangeable cross-reference
interchangeable
145BInterchangeable
interchangeable cross-reference
interchangeable
480273-3Interchangeable
interchangeable cross-reference
interchangeable
T9160612-3ALT3Interchangeable
interchangeable cross-reference
interchangeable
K7132759G3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 57B3661?
57B3661 is a CONNECTOR,OXYGEN MASK.
What parts can replace 57B3661?
There are 16 known substitutes for 57B3661: 1675, MILR10509B, 145B and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 57B3661?
57B3661 is cataloged in the Federal Logistics Information System (FLIS) under NSN 1660-00-730-2247. 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: July 2026