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// TECHNICAL RESOURCES

MS24665 cotter and MS20392 headed pins.

Distinguish split cotter pins from headed, drilled-shank pins and review their documented successor standards.

// PIN IDENTIFICATION

Two different retention components

A split cotter pin and a headed, drilled-shank pin are different components. A headed pin may have a hole for a separate retainer; that feature does not make it a cotter pin.

Cotter and headed-pin references
ItemReference
MS24665Split cotter pin; successor NASM24665
MS20392Headed, drilled-shank pin; successor NASM20392

// ASSEMBLY REVIEW

Keep the pin and retainer requirements separate

A drawing may call out both a pin and a retaining component. Confirm the full callouts, their materials and their dimensions together. A hole that accepts a retainer is not itself approval to change the retainer type.

// SOURCING DETAILS

Details to send with an inquiry

Provide pin diameter, length or grip requirement, hole position, head configuration and material/finish notation as applicable. For a cotter pin, retain the complete size designation and any packaging or documentation requirements.

// BUYER CHECKLIST

Prepare the requirement for quotation

// SOURCE WITH WEBSON

Have a part number or bill of material?

Send the complete designation, quantity, required delivery date and documentation requirements. Webson will review your requirement for quotation.