Classification by head style1,2 ME350 FLLU8TE我 SLOTTED TRUSS PAN PHILLIPS BINDING OVAL INOENTED lengths 1/8"to 6" UNSLOTTED diameters #0 to 3/8" INDENTED WA8HE育 飘0T种 steel-stainiess-brass-bronze-monel-nylon-etc. PHILUPS PHILLPS PHILLPS tsTt TRUSS PAN PHILLIPS OVAL (a)Round (b)Elliptical (c）Countersunk (d)Phillips 26 head head head head
ME 350 26 Classification by head style1,2
SMALL BUT STRONG s正M1-M3.5/#00-46 ME350= a o www.010203.com 27
ME 350 27
Classification by Material/Strength1 ME350— Steel >Most fasteners made from steel because of high strength good ductility good machinability >Three common strength ratings exist: -Minimum Proof Strength(弹性强度) Minimum Tensile Strength The resistance of a material to a force tending to tear it apart,measured as the maximum tension the material can withstand without tearing. :Minimum Yield Strength(屈服强度) >Given in Tables 8-9 through 8-11 Shigley 28
ME 350 28 Classification by Material/Strength 1 •Steel ¾Most fasteners made from steel because of ⁼ high strength ⁼ good ductility ⁼ good machinability ¾Three common strength ratings exist: ₌ Minimum Proof Strength （弹性强度） ₌ Minimum Tensile Strength ₌ The resistance of a material to a force tending to tear it apart, measured as the maximum tension the material can withstand without tearing. ₌ Minimum Yield Strength （屈服强度） ¾Given in Tables 8- 9 through 8-11 Shigley
Classification by Material/Strength1 ME350— .Aluminum >Used for its Corrosion resistance Light weight Fair strength level Good thermal/electrical conductivity also desirable Brass(黄铜，Copper and Bronze(青铜) >Used for their Corrosion resistance -Ease of machining Attractive appearance >Certain alloys(合金)good for marine(海洋) applications 29
ME 350 29 Classification by Material/Strength 1 •Aluminum ¾Used for its ⁼ Corrosion resistance ⁼ Light weight ⁼ Fair strength level ⁼ Good thermal/electrical conductivity also desirable •Brass (黄铜), Copper and Bronze (青铜 ) ¾Used for their ⁼ Corrosion resistance ⁼ Ease of machining ⁼ Attractive appearance ¾Certain alloys(合金) good for marine(海洋) applications
Classification by Material/Strength1 ME350— .Nickel >Good at elevated temperatures >Has good corrosion resistance >Toughness at low temperatures >Attractive appearance. .Stainless Steel >Used primarily for their corrosion resistance. >Some are also non-magnetic. 30
ME 350 30 Classification by Material/Strength 1 •Nickel ¾Good at elevated temperatures ¾Has good corrosion resistance ¾Toughness at low temperatures ¾Attractive appearance. •Stainless Steel ¾Used primarily for their corrosion resistance. ¾Some are also non-magnetic