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PartsTable / COMPONENT / AN665-21R
AN665-21R ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The CLEVIS,ROD END is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, end_radius: 0.250 INCHES NOMINAL IN, fork_depth: 0.469 INCHES NOMINAL IN, hole_shape: ROUND, shank_length: 0.812 INCHES NOMINAL IN, thread_class: 3B ROD CONNECTION. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-530-5353, 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
AN665-21R
NSN: 5340-00-530-5353
FSC: 5340
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
end_radius0.250 INCHES NOMINAL IN
fork_depth0.469 INCHES NOMINAL IN
hole_shapeROUND
shank_length0.812 INCHES NOMINAL IN
thread_class3B ROD CONNECTION
hole_diameter0.190 INCHES NOMINAL IN
overall_width0.313 INCHES NOMINAL IN
thread_length0.313 INCHES NOMINAL ROD CONNECTION IN
shank_diameter0.281 INCHES NOMINAL IN
fork_span_width0.150 INCHES NOMINAL IN
style_designatorCLEVIS
NSN5340-00-530-5353
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AN665-21R MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
HOLE DIAMETER: 0.190 INCHES NOMINAL IN
•
FORK ARM THICKNESS: 0.082 INCHES NOMINAL IN
•
THREAD CLASS: 3B ROD CONNECTION
•
THREAD LENGTH: 0.313 INCHES NOMINAL ROD CONNECTION IN
•
THREAD SERIES DESIGNATOR: UNF ROD CONNECTION
•
SECURING PIN HOLE DIAMETER: 0.046 INCHES NOMINAL IN
•
HOLE SHAPE: ROUND
•
SURFACE TREATMENT: CADMIUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
HOLE DIAMETER0.190 INCHES NOMINAL IN
FORK ARM THICKNESS0.082 INCHES NOMINAL IN
THREAD CLASS3B ROD CONNECTION
THREAD LENGTH0.313 INCHES NOMINAL ROD CONNECTION IN
THREAD SERIES DESIGNATORUNF ROD CONNECTION
SECURING PIN HOLE DIAMETER0.046 INCHES NOMINAL IN
HOLE SHAPEROUND
SURFACE TREATMENTCADMIUM OVERALL
SHANK LENGTH0.812 INCHES NOMINAL IN
OVERALL WIDTH0.313 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
AN665-80RAInterchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-5683Interchangeable
interchangeable cross-reference
interchangeable
AN665-155RInterchangeable
interchangeable cross-reference
interchangeable
AN665-155LInterchangeable
interchangeable cross-reference
interchangeable
AN665-247LInterchangeable
interchangeable cross-reference
interchangeable
AN665-115RInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN665-21R?
AN665-21R is a CLEVIS,ROD END.
What parts can replace AN665-21R?
There are 18 known substitutes for AN665-21R: AN665-80RA, MIL-DTL-5683, AN665-155R and 15 more. Substitute compatibility should be verified for your specific system.
Is AN665-21R still available?
AN665-21R is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026