Transcription of FASTENERS MASONRY FASTENER TECHNICAL DATA AND …
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FASTENERS MASONRY FASTENER TECHNICAL DATA AND …
STRUT & HANGERSAUTO & ELECTRICALCHEMICALS& JANITORIALSAFETY PRODUCTSCONTRACTOR& INDUSTRIALTOOLS &ACCESSORIESDRILLS / SAWS& DATAAND CHARTSSECTIONIMPORTANT DISCLAIMERAll of the information provided in this sectionhas been assembled with concern for is intended for advisory purposes only anduse of this information is completely do not guarantee its completenessor validity and assume no responsibilityfor any loss, claims or damages resultingfrom use or application of this information is subjectto change without prior sure to verify!AUTO & ELECTRICALTOOLS & ACCESSORIESSTRUT & HANGERSDRILLS / SAWS& ABRASIVESSAFETY PRODUCTSFASTENERSCONTRACTOR& INDUSTRIALMASONRYANCHORSCHEMICALS& JANITORIAL149 FastenersPRODUCT CATALOG 2009/10 Industry standardsMost industrial FASTENERS are covered by two basic standards : one for materials and properties; the other, for dimensions and tolerances.
13 = number of threads per inch UNR = thread form standard (Unified National Radius-Root) C = coarse-thread series 2A = class of thread fit The coarse-thread series (UNRC or UNC) is used on the vast majority of bolts and nuts. Number of threads per inch ranges from 20 threads for a 1/4-in.- diameter bolt to 4 threads for a 4-in.-diameter bolt.
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