PartsTable
Technical Data Sheet
202-666 ✓ Verified by PartsTable
· NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

CHOKE PULL-OFF,CARBURETOR,EMISSI. Key specifications include end_item_identification: CARBURETOR,CARTER,MODELS 3621209,3621210,4049174,4131250, general_characteristics_item_description: ROUND SHAPED BODY,WITH MTG BRKT; PROVISION FOR VACUUM CONN AND CONTROL ARM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-188-0240, 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
202-666
NSN: 5315-00-188-0240
FSC: 5315
CAGE: 80318 — BTR VALVE SEALANTS INC (USA)
SPECIFICATIONS
end_item_identificationCARBURETOR,CARTER,MODELS 3621209,3621210,4049174,4131250
general_characteristics_item_descriptionROUND SHAPED BODY,WITH MTG BRKT; PROVISION FOR VACUUM CONN AND CONTROL ARM
NSN5315-00-188-0240
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 202-666 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
FIRST END LOCATION: BOTH ENDS
FIRST END OUTER RADIUS: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
PIN OVERALL LENGTH: 1.970 INCHES MINIMUM AND 2.030 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL: STEEL CORROSION RESISTING OVERALL
SURFACE FINISH: 63.0 MICROINCHES SHANK END
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
FIRST END LOCATIONBOTH ENDS
FIRST END OUTER RADIUS0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
PIN OVERALL LENGTH1.970 INCHES MINIMUM AND 2.030 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL CORROSION RESISTING OVERALL
SURFACE FINISH63.0 MICROINCHES SHANK END
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
FIRST END STYLEOVAL
SURFACE TREATMENTPASSIVATE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
202666Interchangeable
interchangeable cross-reference
interchangeable
FS-38Interchangeable
interchangeable cross-reference
interchangeable
202-665Interchangeable
interchangeable cross-reference
interchangeable
NASM24692Interchangeable
Same NIIN cross-reference
interchangeable
MS24692-339Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 202-666?
202-666 is a CHOKE PULL-OFF,CARBURETOR,EMISSI.
What parts can replace 202-666?
There are 5 known substitutes for 202-666: 202666, FS-38, 202-665 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 202-666?
202-666 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-188-0240. This indicates validated use in U.S. government and defense supply chains.
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