nut
Hex Cap Nuts
Hex Serrated Nuts
Hex Flange Nuts
Hex Coupling Nuts(High Nuts)
Round Nuts
Square Nuts
Pipe Nuts
Wheel Nuts
Wing Nuts
U Nuts
T Nuts
Eye Nuts
Kep Nuts
Clinch Nuts
Weld Nuts
Heigh Strength Nuts
Structural Nuts
Stainless Steel Nuts
Brass Nuts
Aluminum Nuts
Alloy Steel Nuts
Heavy Duty Wheel Hub Nuts
Acorn Cap Nuts
All-Metal Prevailing Torque Type Nuts
Anchor Nuts
Big Size Nuts
Closed End Acorn Nuts
Conical Washer Nuts
Hex Head Machine Bolts
Hex Lag Bolts
Square Head Bolts
Carriage Bolts
Eye Bolts
Hex Socket Cap Screws
Set Screws
Stud Bolts
Screw Studs
Wheel Bolts
Wing Screws
Self Tapping Screws
hread Cutting Screws
elf Drilling Screws
Drive Screws
Machine Screws
Wood Screws
Furniture Screws
Chipboard Screws
Drywall Screws
Foundation Bolts
U Bolts
Hook Bolts
Toggle Bolts
Flange Bolts
Track Bolts
Some common factors for screws and nuts quality control:
1.Appearance inspection: under the condition of appropriate illumination, open hole distance 30 cm to check by visual inspection;
2.Dimensional inspection: use vernier caliper to measure its structure size; the tolerance should be within 0.02 mm.
3.Surface electroplating: require surface electroplating is good, no oxidation, scratches,and other bad plating phenomenon.
4.Assembly effect: Select standard screw head, use electricity, wind batch screw hole in plastic or play 5 times in a row, on the standard matching nut screw groove no killing, screw not fracture, sliding wire nut: with standard screw sleeve, not smooth silk or screwing in difficulties
5.Oxidation resistance: steep In saline s after 2 hours to dry after 24 hours to see if the screw surface will have oxidation, rust
6.Product packaging requirements products piled up neat and moisture protection.
