Installation Instructions Step 1 Remove the top screw, insert the dowel into the locating hole of the rst part, and expand the bottom half with a hex wrench. Step 2 Replace the top screw, slide the locating hole of the second part over the dowel and expand top half with a hex wrench. Precision Expanding Dowels • Material: Alloy Steel, case hardened to 50-55 Rockwell C • Self-Centering and Repeatable within +/- 0.0005" (0.013mm) • Top and bottom half of dowel expand separately • Patented Inch Part Number Nominal Diameter Inch Nominal Length (L) Inch Recommended Hole Diameter Hex Key Sizes A Diameter B Diameter L1 Bottom Top +0.001/-0.000" +0.000/-0.001" +0.000/-0.010" ±0.005" Step 1 Step 2 29401 1/4 1/2 0.250 0.249 0.245 0.428 5/64 3/32 29402 3/8 3/4 0.375 0.374 0.370 0.634 1/8 5/32 29403 1/2 1 0.500 0.499 0.495 0.881 5/32 3/16 29404 5/8 1 1/4 0.625 0.624 0.620 1.162 3/16 7/32 29405 3/4 1 1/2 0.750 0.749 0.745 1.390 1/4 5/16 29406 1 2 1.000 0.999 0.995 1.758 3/8 1/2 Metric Part Number Nominal Diameter (mm) Nominal Length (L) (mm) Recommended Hole Diameter Hex Key Sizes A Diameter B Diameter L1 Bottom Top +0.025/-0.00mm +0.00/-0.025mm +0.00/-0.254mm ±0.13mm Step 1 Step 2 29451 10 20 10 9.98 9.88 17.45 3 4 29452 12 25 12 11.98 11.89 22.48 4 5 29453 14 28 14 13.97 13.89 24.74 4 5 29454 16 32 16 15.98 15.90 29.51 5 6 29455 20 38 20 19.98 19.89 35.31 6 8 LOCATING COMPONENTS LOCATING COMPONENTS workholding solutions Phone: 877-426-2504 | Fax: +1 216-481-6193 | E-mail: info@jergensinc.com | www.jergensinc.com 241
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