<p>Hub has 6 on 5" bolt circle for 1-3/4" To 1-1/4" tapered spindle for a 5,200lb to 6,000lb axle. 3,000lb capacity per hub. Includes pressed in bearing races with a pilot diameter is 3-1/2", flange diameter is 7-1/16".</p> <p>&nbsp;</p> <p>Hub assembly includes:</p> <ul> <li>(1) 1-3/4" I.D. Inner Bearing <span style="text-decoration: underline;"><span style="color: #0000ff;"><a style="color: #0000ff; text-decoration: underline;" href="/l-25580-wheel-bearing.html">(L-25580)</a></span></span></li> <li>(1) 1-1/4" Outer Bearing <a href="/l-15123-wheel-bearing.html"><span style="text-decoration: underline;"><span style="color: #0000ff; text-decoration: underline;">(L-15123)</span></span></a></li> <li>(1) Grease Seal <a href="/sl-213-grease-seal-trailer-axle.html"><span style="text-decoration: underline; color: #0000ff;">(SL-213)</span></a> 2.125" I.D/3.375" O.D.</li> <li>(1) Cotter Pin <span style="text-decoration: underline;"><span style="color: #0000ff; text-decoration: underline;"><a style="color: #0000ff; text-decoration: underline;" href="/cotter-pin-trailer-axle-scp-100.html">(SCP-100)</a></span></span></li> <li><span style="color: #000000;">(1) EZ Lube Dust Cap <a href="/21-1-1-e-z-lube-cap-dexter.html"><span style="text-decoration: underline;"><span style="color: #0000ff; text-decoration: underline;">(21-1-1)</span><span style="color: #000000; text-decoration: underline;"> &amp; Rubber Plug </span><span style="color: #0000ff; text-decoration: underline;">(85-1)</span></span></a></span></li> <li>(6) 1/2"-20 Lug Nuts <a href="stn-506-lug-nut-trailer-axle.html"><span style="background-color: rgb(255, 255, 255); color: rgb(19, 47, 229);">(STN-506)</span></a></li> </ul> <p>&nbsp;</p> <p>Please note: This assembly does not include a castle nut. You would be using your existing nut for install.