DIN439 Unchamfered Hexagon Thin Nut

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Product Description

Product Name	DIN439 Unchamfered Hexagon Thin Nut
Material	Carbon Steel, Stainless Steel 201/ 304/ 316 or others.
Size	M3--M20
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

1. Reliable Supplier

2. High Quality

3. Standard Producing Technology

4. Competitive Factory Price

5. Fast Delivery

Product Picture：

DIN439 Unchamfered Hexagon Thin Nut

Q: What is the meaning of the 8.8 on the screw: Alina: refers to the strength of the thread level, the decimal point in front of the tensile strength, 8 is 800MPa, 10 is 1000MPa, the decimal point behind the value of the yield limit and the tensile limit ratio, .8 is 0.8.

Q: The mirror under the mirror put the toilet glass is broken, the original screw rust deformation, and pulled out. How to rust the screw: That you can break before and after some of the expansion do not drip the oil or else you use the pliers light slippery when there is an empty time with a word screwdriver to feel almost when the pliers can be used

Q: Gasket A140 what is the material: This is a performance level, as long as the grade requirements of stainless steel materials can be

Q: High-strength screw standard parts of the quality of what data: High strength bolts are used for connecting bridges, rails, high pressure and ultrahigh pressure equipment.

Q: Screw M is mechanical teeth, tapping is what?: Screw M is the size of the screw, can not use the nominal judge whether the screw is a mechanical screw or self-tapping screws. Metric tapping screws are marked directly above the name Tapping Type.

Q: In the fastener industry, 1018 refers to what material: Simple point is the wire friends, the general is the production of screws. Rivet material is generally 1215

Q: I am a trainee apprentice, recently encountered a problem, that is, some screws are screwdriver screwdriver or hexagon turned no thread. Can not buckle, only in the inside idle. What is the general use of this situation to open it? Thank you, more urgent.: You can use a chisel in the screw cap to open a word mouth, and then use the screwdriver can be screwed down.

Q: Engineering argument, usually referred to as the M3 screw, M refers to what is the meaning? The Please instruct the engineering staff.: M is the large diameter of the screw, the diameter of the screw top of the bolt, or the diameter of the screw bottom of the nut

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 is the size of the screw for the wall power switch installation: Concealed switch generally M5 × 30 semi-round head screws, you can also use M4 × 30 tapping screws. Ming installed switch is used M5 expansion with M5's self-tapping screws.

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