Page 13 of Complete Line of Press Fit Fasteners by Driv-Lok, Inc.

14 Split Hollow Dowels Plain Pins and Dowels APPLICATION Plain pins and dowels are used in the same manner as grooved pins when highly accurate location is required. Plain pins and dowels may be used as locking devices, pivots, bearing faces, or locating elements. Use of plain pins and dowels generally requires a drilled and reamed hole. They are used where there is not a high degree of end load and are basically shear resistant type fasteners. DESCRIPTION Plain pins are solid cylindrical pins which have a cold drawn finish. Plain pins with diameters up to 1/8" have a tolerance of +.000/-.001 in. and diameters 1/8" and over have a tolerance of +.000/-.002 in. Dowels are solid cylindrical pins which have a centerless ground finish with total precision tolerances. All plain pins and dowels are special order items. Various materials, diameters, lengths, end configurations, heat treatment, and finishes are available. See ORDERING INFORMATION on page 20 for options available on plain pins and dowels. DRIV-LOK'S engineering department will work with customers to provide technical assistance. DRIV-LOKs split hollow dowels are designed and manufactured to provide excellent retention forces and ease of assembly. They can also be auto-inserted. Split hollow dowels are ideal for use in conjunction with bolts that pass through the center of the dowel after it has been installed. This offers a weight savings over conventional locating dowels, which require separate drilled and reamed holes. The expense and labor involved in providing separate locating dowels and their holes in assemblies is eliminated. The bolt hole is counterbored on both halves of the assembly. The dowel is then installed into one of the counterbores and used to locate the other half of the assembly. Split hollow dowels offer additional cost savings over hollow dowels machined from tube or bar stock. A typical application of the split hollow dowel is where two halves of an assembly are located and bolted together (cylinder heads to a block, valve bodies to a housing, clam shell assemblies, etc.) FEATURES Split Dowels are available in a variety of materials, heat treat and finishes. A Split Dowel allows for a larger hole tolerance. Our application engineers will assist you in designing the right pin for your application. DRIV-LOKs design engineering staff will work with you and provide technical assistance to develop the right fastener for your application. FUNCTION Plain and dowel pins are held in place by interference created around the entire pin circumference when it is pressed into a hole. The insertion, holding, and radial forces generated by these pins are very sensitive to hole diameter variation and usually require the use of a reamed hole. ORDERING INFORMATION See pages 20 21. SPC assures high quality Heat treatment available Precision tolerances available Wide variety of material options Various end configuration options Seamless Hollow Dowels also available in quantities per customer design. Call Driv-Loks Customer Service Department for details. Following are just a few idea starter suggestions for saving fastening time and money, and improving products with DRIV-LOK barbed pins and barbed studs. Ask for samples to test in your applications. DRIV-LOK, Inc. 11 BARB-LOK Pins Studs APPLICATION The special designed barbs on DRIV-LOK BARB-LOK Pins and Studs provide positive fastening for plastics and some metals. These barbed fasteners can replace conventional screws, barbed nails, and other fasteners to gain permanent holding power plus faster assembly. Specially contoured barbs impressed on pins and studs provide maximum gripping. DESCRIPTION The barbs are located at 120 intervals on the diameter of the pin. the number of barbs along the length of the pin, customer requirements, and the distance between the barbs. The crests of the barbs constitute the expanded diameter which is a few thousandths larger than the nominal diameter. The expanded diameter of the barbed pin is measured on the second barb from the end of the pin and is measured with a ring gage. (See page 5 for proper expanded diameter measurement methods.) BARB-LOK Pins and Studs are made from low carbon steel or aluminum. Low carbon BARB-LOK Pins and Studs are zinc plated for corrosion resistance. Other finishes are available upon request. FUNCTION Barbed pin holding power is affected by the pin diameter relative to the hole diameter and material hardness. The recommended hole size for most soft plastic applications is .001 to .005 below the nominal pin diameter. Hole sizes for hard plastic and aluminum applications should be greater than the nominal pin diameter. Specific hole sizes should be determined for each individual application. 1. Two plastic parts are securely fastened with a Type 2 barbed pin. Positive holding is provided in both parts. 2. DRIV-LOK barbed studs effectively secure handles and knobs, other plastic parts. Reduce assembly time. 3. Type 1 barbed pins are particularly useful where secure locking is required in one surface, and the unbarbed portion of the pin aligns with a hole in a second surface. FERROL PINS STUDS Another option for plastic or ductile metals. Call Driv-Lok for details. BARB-LOK STUD DIMENSIONS SPECIAL TYPE 2 BARB-LOK PIN SPECIAL TYPE 2 BARB-LOK PIN Standard BARB-LOK studs are available in stud sizes from #2 through #16 and lengths from 3/16" through 3/4" as shown in the table below. SPECIAL ORDER BARB-LOK PINS AND STUDS All Barb-LOK pins are special orders and are manufactured to customer specifications. Special BARB-LOK Studs can also be ordered to customer specifications. DRIV-LOKs engineering staff will work with customers to provide technical assistance. Special materials, diameters, lengths, end configurations, and finishes are available by request as special orders. SPECIAL TYPE 1 BARB-LOK PIN *Expanded diameter *Expanded diameter *Expanded diameter Nom. Head Stud Shank Head Dia. Height Available Lengths Expanded No. Dia. Max. Min. Max. Min. 3/16" 1/4" 5/16" 3/8" 1/2" 3/4" Dia. 2 .086 .162 .146 .070 .059 n n n .088/.095 4 .104 .211 .193 .086 .075 n n n .107/.115 6 .120 .260 .240 .103 .091 n n n .124/.134 8 .144 .309 .287 .119 .107 n n n .149/.159 10 .161 .359 .334 .136 .124 n n n .166/.177 12 196 .408 .382 .152 140 n n .202/.213 14 .221 .457 .429 .169 .156 n n .227/.239 16 .250 .472 .443 .174 .161 n n .258/.270 Holding The Future Together A DRIV-LOK exclusive SPC assures high quality Standard zinc finish Superior fastening power Reduces assembly time Chamfered end

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