Sachs clamp? You mean the aluminum "S" drop clamp used to hold the drop to the messenger wire and prevent splitting? Or are you looking for the clamp used to tie the drop off at the mid span slamp? Both items are available from Thomas & Betts
http://www.tnb.com/ps/pubint/index.cgi?a=get_sub&cid=11 You can do a search using part numbers "SC10-1" & "SC02MFA-SS"