• Category
• Whole Screws bolts nuts rivets washers pins and buttons studs retainer ring assembly and connection deputy other fasteners connectors

• Classification
• Whole Machine screws self tapping screws set screws manpower screws wood screws screw composition variety of options hex nuts flat washers round nuts cylindrical pins key round head rivets square nuts Semi-tubular rivets flange nuts rivets screws studs cap nut spring pins open type flat round Pulling ... wing nuts threaded rods Solder nuts slotted screws standard spring washers flat head rivets pins nylon nuts cotter pins knurled nut hole ring snap ring ri

• Standard Type
• Whole GB German standard non-standard variety of options American standard Japanese standard British standard

• Head type
• Whole Round countersunk head hex head cylinder head pan head oval head variety of options square head hex round hexagonal shaped double U-shaped T-shaped rings flat head T-shaped head umbrella head butterfly hexagon other

• Thread tolerance
• Whole 4h 6g 5g 8g 6H other

• Material grade
• Whole Stainless steel carbon steel 4.8 carbon steel Q235 carbon steel 8.8 12.9 steel carbon steel Q215 plastics alloy steel carbon steel stainless steel A2-70 copper and copper alloys 45H spring steel 65Mn A1-50 carbon steel 10.9 A4-70 A2-50 22H A2 zinc and zinc alloys aluminum and aluminum alloy A4-50 14H A1 steel 33H 100HV

• Surface treatment
• Whole Galvanized without treatment nickel black oxide phosphate copper chrome polished black variety of options no DACROMET other

• Product rating
• Whole Class A Class B C class one other

• Scope
• Whole Machinery and industrial fasteners fasteners electronics furniture fasteners adapter electrical industry fasteners fastener installation building renovation siding sheet fasteners automotive fasteners fasteners power industry communications equipment fasteners rail rail fasteners fasteners bridge engineering mining mechanical fasteners marine fasteners motor special fasteners fasteners mold chemical fasteners rack barricades valve fasteners aviation special fasteners fibe