production and sales of stainless steel self tapping screws,Mechanical screws,nuts, rivets,washers（plain washers and spring washers）,wedge anchor, stainless steel undercut anchor, aluminum extrusions, expansion screws and other standard or non-standard fasteners and curtain wall accessories.
Lederer has been one of the leading suppliers of stainless steel fasteners for more than 40 years and offers more than 20,000 different articles direct from stock:
- screws, pins, nuts, rings, washers
- made from stainless steel, carbon steel and non-ferrous materials （A4-80、Duplex Stainless Steel）
- standard and designed parts
- DIN, EN, ISO and inhouse
- special parts by drawings and special materials
Lederer is big enough to realise even substantial and elaborate projects (we will be glad to provide references), and small enough to react quickly, flexibly and unbureaucratically to market and customer requirements.
Gem-Year are producing all kinds of high quality products such as bolts, nuts, screws, drawn wire and other off-standard fasteners, which are according to GB, ANSI, DIN, UNI,JIS and ISO standards with yearly production output of 200,000 metric tons.
Snap Ring, circlips for shafts, E clips,circlips,hex head bolt,anchor bolts,motorcycle bolts,
huck bolts,wheel bolt,carriage bolt,socket head bolt,
hook bolt,hanger bolt,plow bolt,guardrail bolts,
countersunk bolts,structural bolt, lag bolt,
lock bolt,pan head bolt,
stud bolt,square head bolts,track bolts,expansion bolts
Standard bolt, screw ;
Standard nut ;
The high strength fastener
Able to bear the falling type fastener;
Making up type fastener;
Welding type fastener;
Axle sleeve ;
Reed nut punching ;
1. variety of screws with diameter from 0.80mm to 8.00mm, e.g. standard screws which are in accordance with any one of GB DIN ANSI BS JIS standards, non-standard screws and customized or tailored screws
2. variety of stamping hardware
3. automatic lathe parts and CNC lathe parts.
Among them, please, especially pay attention to the perforated seal screw series，which is used for lead-sealed wire , and for which the company has created its unique technology and manufacturing process.
Our main products include stainless steel/ iron tapping screws, drywall screws, bolts, studs, washers, set screws etc. we can also customize non-standard parts. What’s more, we can supply kinds of bolts with round head, big flat head, countersunk head, washers, cheese head; tapping screws with flat head, countersunk head, round head, big flat head and washers; self-drilling screws with hexagon head, flat head and round head.
Pressing parts, Hex wrench,Standard fasteners and non-standard, such as the standards GB/DIN/ANSI/ASME/JIS/UNI/NFE/AS/ISO etc. The pressing parts are involved in home, hardware and machinery,electrical, and vehicles etc. The washers are like normal washer, HV washer, stainless washer, insulated washer and spring washer etc. The screws are like drywall screw, Chipboard screw etc.
Slotted countersunk head wood screws,
Cross recessed countersunk flat head screws, Hexagon head wood screws,Hexagon socket head cap screws,Cross recessed pan head tapping screws,Cross recessed pan head drilling screws with tapping screw thread,Pan head screws with cross recess,Furniture screws,Machine screw,Combine bolt,T-BOLTS