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Technical Data Sheet
PartsTable / COMPONENT / C-F-206 TYPE 1
C-F-206 TYPE 1 ✓ 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

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: WOOL AND COTTON OVERALL, thickness: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, hole_diameter: 1.209 INCHES MINIMUM AND 1.229 INCHES MAXIMUM IN, overall_width: 0.188 INCHES NOMINAL IN, overall_length: 10.000 INCHES NOMINAL IN, outside_diameter: 1.250 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-291-2951, 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
C-F-206 TYPE 1
NSN: 5310-00-291-2951
FSC: 5310
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialWOOL AND COTTON OVERALL
thickness0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
hole_diameter1.209 INCHES MINIMUM AND 1.229 INCHES MAXIMUM IN
overall_width0.188 INCHES NOMINAL IN
overall_length10.000 INCHES NOMINAL IN
outside_diameter1.250 INCHES NOMINAL IN
overall_diameter1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN
style_designatorRECTANGULAR
aperture_diameter0.625 INCHES NOMINAL IN
cross-sectional_width0.188 INCHES NOMINAL IN
cross-sectional_height0.125 INCHES NOMINAL IN
peripheral_shape_styleROUND
NSN5310-00-291-2951
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: C-F-206 TYPE 1 · 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
•
CENTER HOLE SHAPE STYLE: ROUND
•
MATERIAL DOCUMENT AND CLASSIFICATION: C-F-206,TYPE 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
OVERALL DIAMETER: 1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN
•
MATERIAL: WOOL COMP 16R3 OVERALL
•
MINIMUM TENSILE STRENGTH: 400 POUNDS PER SQUARE INCH LBS
•
THICKNESS: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE SHAPE STYLEROUND
MATERIAL DOCUMENT AND CLASSIFICATIONC-F-206,TYPE 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN
MATERIALWOOL COMP 16R3 OVERALL
MINIMUM TENSILE STRENGTH400 POUNDS PER SQUARE INCH LBS
THICKNESS0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
HOLE DIAMETER1.209 INCHES MINIMUM AND 1.229 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
50337-1Interchangeable
interchangeable cross-reference
interchangeable
NL1550Interchangeable
interchangeable cross-reference
interchangeable
72-6080Interchangeable
interchangeable cross-reference
interchangeable
ES0-686714-1Interchangeable
interchangeable cross-reference
interchangeable
PA-024-7440Interchangeable
interchangeable cross-reference
interchangeable
PB344AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C-F-206 TYPE 1?
C-F-206 TYPE 1 is a WASHER,FLAT.
What parts can replace C-F-206 TYPE 1?
There are 11 known substitutes for C-F-206 TYPE 1: 50337-1, NL1550, 72-6080 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for C-F-206 TYPE 1?
C-F-206 TYPE 1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-291-2951. This indicates validated use in U.S. government and defense supply chains.
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Last verified: July 2026