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<div>Is there anything special about the head stud washers? Grade 5, Grade 8? Size, thickness?</div><div>Mike MacLean</div><div>56 BN2, 60 AN5</div><div><br></div><div><br></div><div><br></div><div id="composer_signature"><div style="font-size:85%;color:#575757">Sent via the Samsung GALAXY S® 5, an AT&T 4G LTE smartphone</div></div></body></html>