DIN931 Hexagon Head Bolts

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China Main Port
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TT OR LC
Min Order Qty:
-
Supply Capability:
10000000 piece/ pieces per month pc/month

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Product Description:

Product Description

Product Name

DIN931 Hexagon Head Bolts

Material

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

Size

M6--M24

Standard Model

DIN ANSI JIS ASTM

Min Order

1000piece/ pieces


Packaging & Shipping

Packing

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.


Our Services

1. Reliable Supplier

2. High Quality

3. Standard Producing Technology

4. Competitive Factory Price

5. Fast Delivery


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Q:What are the technical requirements for fasteners?
Fasteners are generally standard parts, have national standards (except for special requirements)
Q:How to use washer, gasket, o-ring "
Spring washer, "casing gasket" and "Liner O-ring", in fact should also be our daily used to seal washer, gasket, O-ring
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:Why should the screw twist clockwise?
Clockwise tightening of the screw is called orthodontic screw, counterclockwise tightening of the screw called anti-screw or left teeth screws, the general international are clockwise orthodontic screws, in a particular case will use the left teeth Screws, such as the need to fix the fan impeller, are left teeth
Q:In the design, the bolt connection is necessary to have a gasket?
The bolt must not install gasket, join many planes and automobiles and ships, wind turbines, atomic energy equipment is not installed gasket, everywhere is whether heavy vehicles or small bolts on the wheel without gasket. Gasket is the name of the washer, flat washers, special washers, spring washers, washers, washers. Installed not installed gasket, what gasket, depending on the specific design requirements, to have the basis of choice. In general, the position of the bolt hole is very high, the bolt hole diameter is relatively small, with close to that level of reaming hole, install flat washer is unnecessary, it does not have the nut friction. For those with very rough hole bolt connection, such as with M12 bolt hole diameter of 16mm, 18mm, it should be installed flat washer. This connection is often a lap of the steel frame, the location of poor manual drilling equipment. The automobile gear box is usually a hole on the production line and the position of the hole is high, and the bolt hole with the gap is relatively small, do not install the washer, otherwise the smaller contact area of the nut, the bolt is easy to loose.
Q:What fasteners are manufacturers in China?
(8) Spring rain (Dongguan) Hardware Products Co., Ltd. (9) Zhejiang New Oriental Fasteners Co., Ltd. (10) Cixi Zhenning Machinery Co., Ltd.
Q:Do not use self tapping screws
Self tapping screws are needed to use the gasket.A part between a connector and a nut. A flat metal ring is generally used to protect the surface of the connecting piece from the nut.
Q:Fasteners often say that the nature of galvanized oxidation is what it means
True color means that the surface of the fastener is not treated. Galvanized refers to non-zinc easily oxidized metal fastener surface coated with a layer of zinc, the role is to prevent its rust. Oxidation refers to the surface of the metal fastener through a chemical reaction to produce a layer of rust-proof film, the main role is rust, the other can also beautify the appearance.
Q:How does the screw twist?
For the "word" and "cross" head screws can be upright screwdriver, vibration screwdriver back (pay attention to intensity), and then twist.
Q:Flat gasket with what material
Due to the standard for the 100HV, 140HV flat washers can be made of low carbon steel. General enterprises in the selection of materials, most of the materials used in Baosteel, easy to cold stamping. Here is a brief description of Baosteel standards.

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