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P,DDF SUPPORT I~w1ERIALS - All components of the roof bolt assembly <br /> shall comply with the American National Standards Institute "Spec- <br /> ifications for Roof Bolting Materials i n Coal Mines." <br />1• H. RDOF BOLTS Manufacturer's <br /> P~anufacturer CF&I Steel Corp. Designation 5772-1228-7-1 <br /> Bethlehem Steel Co. 23-9,10 <br /> Kaiser N/A <br /> _ Minimum Length ~6"' ~,~~ I'SO' iameter 5/8" <br /> F4 2-76 Grade 75 CF&I <br /> Type Steel A306 Grade 80 (Bethlehem) Type Thread Rolled <br /> Length of Thread 8" Min Type Hea d Standard <br /> (Stand ard, Self-centering, Cone Neck <br /> Dimensions of Bolt Head: Nut 1-1/8"Flan ge 1 - 1/2" <br /> I. GEARING PLATES Manufacturer's <br /> P'~anufacturer Gate City Steel Designation N/A <br /> eth e em teel Co. 24-9,913 <br /> neon orge ASTM X432 <br /> Dimensions 6" X 6" X 1/4" (Gate City & Bethlehem) <br /> 6" X 6" X 3/16" Ilninn Fnr~ <br /> <br /> Center 13/16" GCT <br /> Shape Donut Em Hole Size 3/4" (BSC & UF) _ <br /> Donut Embossed, Bell Embossed, Flat) <br />• J. WASHERS Manufacturer's <br /> ldanufacturer Designation <br /> *Type Steel Hardened Size <br /> *Washers shall be through hardened to a hardness of 35 to 45 as <br /> measured on the Rockwell C Scale. <br /> Shape Hole Size <br /> K. ANCHORAGE UNIT Manufacturer's <br /> PSanufacturer Pattin Cor D-1 Designation 5792-0121-5-1 <br /> ethlehem Steel Co. C-1. K-3 5-64,68,76,80 <br />K <br /> _ <br />hio Brass Co. , <br />22463 <br /> Size +.030" <br /> Expansion <br />Type Finishing Bit 1-3/8 <br /> Finishing bits shall be easily identifiable by sight or fee <br /> Installed 7orGue 150 ft.-lb. <br />L. MATERIALS USED IN CONJUNCTION WITH ROOF BOLTS <br />6" X 16" X 3/16" Half Headers (steel} Pattin Mfg. Co. _ <br />• Steel Roof Mats <br />Prior approval Shall be obtained before making any changes in the mater- <br />ial listed. <br />