Fastener Info

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Rivet Dimensions

Nominal Rivet Diameter D H E W P F Ultimate Shear Load Ultimate Tensile Load Mandrel Break Load Rivet Shank Diameter Head Diameter Head Height Mandrel Diameter Mandrel Protrusion Blind Side Protrusion Max Min Max Min Max Nom Min Max...

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Robertson screw

Shop Robertson Screw Although most Canadian are familiar with good old Robertson's fastener for umpteen years, his name is not so well known outside of Canada. They are referred as Square drive in the US. P.L. Robertson was a Canadian...

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Thread pitch

Thread Pitch and Thread Count (TPI) Thread Count (TPI) TPI stands for Threads Per Inch. TPI simply a count of the number of threads per inch measured along the length of a fastener. TPI is used only with American fasteners. Metric...

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Pilot Hole Size

Wood Screw Pilot Hole Sizes Screw Size Hard Wood Soft Wood Countersink Size Tapered Bit Straight Bit Tapered Bit Straight Bit #2 3/32" 1/16" 5/64" 1/16" 1/4" #3 7/64" 5/64" 3/32" 1/16" 1/4" #5 1/8" 3/32" 7/64" 5/64" 5/16" #6...

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Fastenere - Machine Screw Diameters

Machine Screw Diameters Fine Thread Coarse Thread Nearest Fractional 0-80 1/16" 1-64 1-72 5/64" 2-56 2-64 3/32 3-48 3-56 7/64" 4-40 4-48 7/64" 5-40 5-44 1/8" 6-32 6-40 9/64" 8-32 8-36 5/32" 10-24 10-32 3/16" 12-24 12-28 7/32" 1/4-20 1/4-28...

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Bolt Grade Rating and Strength Chart

US Bolts Head Marking Grade and Material Nominal Size Range (inches) Proof Load (psi) Min. Yield Strength (psi) Min Tensile Strength (psi) No Marking Grade 2 Low or medium carbon steel 1/4" thru 3/4"  55,000  57,000  74,000  Over 3/4" thru...

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