// TECHNICAL RESOURCES
MS20426 and MS20470 solid rivets.
Compare countersunk and universal-head solid-rivet families and understand why the document name and ordering number can differ.
// HEAD GEOMETRY
Start with the installed head
MS20426 identifies a 100-degree countersunk precision-head solid-rivet family. MS20470 is a universal-head solid-rivet family. The head shape and required seat differ, so diameter and length alone do not establish an alternate.
| Item | Reference |
|---|---|
| MS20426 | 100-degree countersunk precision head |
| MS20470 | Universal head |
// DOCUMENT AND PART NUMBER
An example of unchanged part numbers
MS20426 has the successor document NASM20426, with the original part identification numbers retained. A NASM document title therefore does not mean an MS part number must be renamed by changing its prefix.
// PURCHASING DETAILS
Order the entire rivet requirement
Record material/finish codes, diameter and length or grip requirements. Confirm whether a specified length is measured under the head or includes it; use the governing drawing. Installation access and process requirements remain separate from this family comparison.
// BUYER CHECKLIST
Prepare the requirement for quotation
- Complete designation, including all material, finish and locking suffixes.
- Quantity, required delivery date and controlling drawing or specification issue.
- Required certificates, source restrictions and lot traceability.
// 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.