Our product range includes stainless steel hex head cap screws, hex socket head cap screws, anchor bolts, threaded rods, wire rods, self tapping screws, thread forming screws, expansion bolts, square neck bolts threaded rods, punch products, etc. Product specifications comply with international standards, including GB, JIS, DIN, ANSI and ASME
High strength standard and non-standard parts for automobiles and motor-cycles, and others.
Especially, wheel bolt,wheel nuts,flange bolts,flange nuts,hex head bolt,screws,self-tapping screws,hex nuts,anchor bolts,special fastener,etc.
Main grade 8.8 and up.
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.
Hex head bolts and screws, High strength bolts for Structural application, Full thread stud bolts, Double-end stud bolts , Socket head cap/set screws, Welded stud, Anchor bolts, U bolts sets, Clamp sets, Insulation clamp sets.
Hex nuts, Heavy hex nuts, High strength nuts
for Structural application, lock nuts
Plain washer, spring washer, square taper
API 20E BSL1、BSL2、BSL3 Bolts and Nuts
The staple products for Dongrui are serial Multi-Station Cold Upsetting Formers, and the products are protected by many patents. Dongrui products are with complete range of specifications and stable quality which have been sold to everywhere in China and exported to America, Europe, the Middle East and South East Asia etc. in the world. Dongrui products are trusted by customers both at home and abroad.
The company has passed through the certifications of ISO 9001:2008 quality management system and CE safety regulation, it has several sets of big size machine centers and a lot of advanced mechanized equipment made in China or imported from abroad, it also has a Technological Development Center at provincial level. The research and development ability and level of Dongrui company always plays a leading role at the fields of same trade in China, due to aiming at high standard and thanks to advanced inspection technique applied through whole production procedure, therefore the quality of Dongrui machines can be reliably guaranteed.
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.
Bolts and Screws:
Hex Socket Head Cap Screw,
Hex Socket Head Set Screw,
Hex Socket Flat Head Screw,
Hex Socket Button Head Screw,
Hex Socket Head Shoulder Screw,
Hex Head Bolts
Wheel Hug Bolt
Drop in Anchor,
ISO, DIN, BS, ANSI, ASME, JIS, GB, other standard bolts, screws and standard parts & non-standard fasteners
We produce a wide range of products, including standard fasteners of ANSI, BS and GB, as well as special fasteners. Moreover, we develop automotive assemblies. Bolts of grade 4.6, 6.8, 8.8, 10.9 and 12.9 are available; nuts of grade 2, 5, 8, 10, 12 are available. Specification ranges from M10 to M64. We use plain carbon steel, alloy structural steel and stainless steel as materials.
hot-forged fasteners with full specifications and various kinds, especially non-standard fasteners, like special bolts, steel nail ，extra-long and extra-large fasteners, rivet weld, hardware, stamping and machining parts, high strength bolts, hex bolts, hex socket head cap screws, foundation bolts, stud bolts, U bolts, bolts for electric power steel tower, bolts for petrochemical industry, etc.
Our products various different specifications and types: hexagonal-headed bolts, screws, nuts, washers, anchors, rivets and some larger scales items, produced as per requirements and demand, with M5 to M74 (diameter), and 10mm to 2000mm (length), and meet kinds of standards from abroad as follow:
1) Germany (DIN)
2) British System (BS)
3) American System (ANSI/ASME)
4) Australian System (AS)
5) Japanese System (JIS)
6) Guo Biao (GB, China National Standard)
Therefore, our products are well-sold among the whole country, moreover, they are also widely spread all over the world, including Europe, North-America, Mid-east, Japan, Etc.
Description of goods: Big Head of the blind nuts. Item: Used screw type:3/8-16, ABK mm(Bore D): 13.1mm, Plank thickness: 0.5-3.8mm, ABK mm: 13.5mm, Plank thickness ABK mm: 0.5-3.8mm, 3/8ABK Inch. Little Head of the blind nut,M8 HB (M8 HB common), Used screw type: M8 X1.25, Bore D HB mm: 11.1mm, Plank thickness(HB)mm: 0.5-3.5mm, Srew bolt. Description of goods: Used Air tool gun of the blind nut, Srew bolt