DIN603 Round Head Square Neck Bolt

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Product Name

DIN603 Round Head Square Neck Bolt


Carbon Steel, Stainless Steel 201/ 304/ 316  or others.



Standard Model


Min Order

1000piece/ pieces

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Inner Box + Carton Box + Pallet or Under Your Requirement

Supply capacity

10000000 piece/ pieces per month

Delivery time

5~20  days after deposit

Export market

Asia, America, Europe, Africa, markets.

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4. Competitive Factory Price

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Q:The difference between fasteners and standard parts
Fasteners are said from the point of view of the action, which contains both standard parts (GB ANSI ASME DIN EU JIS, etc.) and non-standard parts (according to the drawings) is not entirely a concept
Q:How did the scrHow did the screw become round?ew become round?
Landlord refers to the screw head into a round can not be disassembled, you can use the saw in the screw head saw a slot, and then use a flat screwdriver can be removed, you can also use a pipe clamp to try, but the space to be bigger!
Q:How to use washer, gasket, o-ring "
Three are used to enhance the sealing performance of the accessories, in general:Washer gasket, a uniform thickness of the ring, used in the bolt to enhance the connection between the fastening; gasket gasket, a variety of shapes, for a variety of occasions, enhance the tightness. In general, both are metallic and washer is included in the category of gasket.Liner and O-ring are commonly referred to as sealing ring, rubber material, shaped like a mini version of the buoy, but the wall thickness is larger and better elasticity, mainly used for instrument installation in Glen head.
Q:I would like to ask the car transmission inside the thrust washer (thrust washer) is used to do ah?
Transmission in order to reduce the noise, the general design of gear teeth, which in the operation of radial force, thrust washer is to prevent excessive wear of the gear side!
Q:Screws, bolts, screws, what is the difference between the three ah?
Screws and bolts have a clear professional terminology, there is a clear distinction, should not be arbitrarily named. Screw and bolt classification has more than 100 national standards, only the standard of the screw there are 92, the standard too much, not convenient memory, not listed one by one, but there are rules to follow, you can simply distinguish: all round And fasteners made of threaded rods are called screws. It must be screwed with a screwdriver, a slotted countersunk head screw, a countersunk head screw, a hexagon socket head screw, a hexagon socket head screw, etc. Set screws, all kinds of set screws, do not take off screws, axial screws; all kinds of knurled screws (with knurled without tools to tighten); there are wood screws and tapping screws and so on. Fasteners with hex head, square head and threaded rod are called bolts.
Q:how much Specification for washers
Conventional M3-M130, there is a "SP" large outer diameter M8-M36, in general, large diameter washers used for long hole or flange nut assembly
Q:how to use Motor washer
Halo, brother, your question also detailed ah, there are a lot of places on a motor washer ah, do you mean where ah, you have to iron or plastic washers, spring washers, I think it is the plastic washer, mainly plastic washer 1 are leak proof, waterproof, anti oil,... 2 insulation, high pressure resistance, 3, vibration reduction, 4, reduce wear, basically on these several functions
Q:What fasteners are manufacturers in China?
(3) Ningbo Jinding Fasteners Co., Ltd. (4) Jin billion Industrial Co., Ltd. (5) Zhejiang Zhapu Industrial Co., Ltd. (3) Changshu Standard Parts Factory; (2) Shanghai Standard Five High Strength Fasteners Co.
Q:Nominal diameter 12 washers, outside diameter?
at present our country flat washer implement related standards are as follows:
Q:When is the gasket (flat pad, spring pad)
Split washer (spring washer manufacturers generally will call washer "WASER") flat washer flat washer flat washer is generally used in connecting piece is a soft texture, a hard brittle, its main role is to increase the contact area, pressure distribution, to prevent the soft texture of the bad press. The basic function of the spring of the spring washer is to tighten the nut after the nut to a force, increasing the friction between the nut and bolt! Materials for the 65Mn (spring steel), heat treatment hardness of HRC44 ~ 51HRC, through the surface oxidation treatment. Hua, washers, meson is the same Dongdong, the name is different

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