• Black Screw With Head System 1
  • Black Screw With Head System 2
Black Screw With Head

Black Screw With Head

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specification: BWG9X2.5"

material: iron

length: 2.5"

head diameter: 20mm

shank diameter: 3.8mm

surface treatment: Electro-galvanized

color: galvanized-shining

package: gunny bag, 50kgs, 24kgs, 25kgs per bag, meet customers' requirement



roofing nails Specification
SpecificationLength (mm)Rod diameter(mm)Head diameter(mm)
bwg8*2"50.84.1920
bwg8*2-1/2"63.54.1920
bwg8*3"76.24.1920
bwg9*1-1/2"383.7320
bwg9*2"50.83.7320
bwg9*2-1/2"63.53.7320
bwg9*3"76.23.7320
bwg10*1-3/4"44.53.3720
bwg10*2"50.83.3720
bwg10*2-1/2"63.53.3720
bwg11*1-1/2"383.0218
bwg11*1-3/4"44.53.0218
bwg11*2"50.83.0218
bwg11*2-1/2"63.53.0218
bwg12*1-1/2"382.7418
bwg12*1-3/4"44.52.7418
bwg12*2"50.82.7418
bwg13*1 1/2"382.3815
bwg13*1 3/4"44.52.3815
bwg13*2"50.82.3815
bwg14*1 3/4"402.114

As a professional roofing nails manufacturer located in production base, long-term business is our aim. Give both a chance to cooperate, you will get a good partner, never be disappointed!

Q: Someone Stole my stock radio out of my car (They cut it out) Now All i have in the is wires and I cannot afford to go get a new one installed.Here are the wires that are in my car
Here's your audio wiring layout: Car Radio Battery Constant 12v+ Wire: Yellow/Green Car Radio Accessory Switched 12v+ Wire: Orange/Green Car Radio Ground Wire: Black/Green Car Radio Illumination Wire: Orange/Black Left Front Speaker Positive Wire (+): White/Black Left Front Speaker Negative Wire (-): Gray/Black Right Front Speaker Positive Wire (+): White/Red Right Front Speaker Negative Wire (-): Gray/Red Left Rear Speaker Positive Wire (+): White/Green Left Rear Speaker Negative Wire (-): Gray/White Right Rear Speaker Positive Wire (+): White Right Rear Speaker Negative Wire (-): Gray
Q: Does anyone know what the wire harness is called that runs from the chassis to the door called on a 1995 jeep gc. This wire harness includes the speaker wires, power window wires, and power lock wires. I have checked everywhere and cannot see what this harness is called.
Its called a wire harness. I beleive it is the main dash wire harness, but you wont get anywhere with that if you are trying to get one from a parts house or dealer, You just have to hit and miss at the salvage yard or digging around yourself and get lucky. But if you can trace the wires to a block connector or firewall connector you will be in luck and just tell them the location of the block where the harness is connected and you should be there, just remember all your options in you truck will have to match the options in the donor truck or the harness wont work for you
Q: I recently took out my old ceiling fan, and now there is a Black, Red, And White Wire hanging from the ceiling, I bought a track light that has a box with a Green, White, and Black wire in it. Which wires am i supposed to connect,It's for the light Switch, and I'm not sure when the house was built, its a Reading, PA Row house.
connect white to white, black to black and put a cap on the white one, and the green one goes to a screw in the light box.
Q: I Have a 02 Dodge ram with the 5.9L engine and i purchased a O2 simulator because i wanted to remove the cats. what i need to know is which wire is the Signal, 12 volt, and the ground wire on the oxygen sensor. If anyone has any idea please share some info.
The wires should be color coated. Usually if it is a 4 wire o2 there are two white wires and two black wires and the blacks are both grounds. Same should go with the 2 wire o2 the black is usually the ground and the wite is the 12v wire.
Q: I have a wire coming from the car battery positive terminal. It is 12v DC. I want to split this wire to two other wires. I cannot connect another wire to the positive terminal. Will splitting this wire cause the voltage to drop to 6v each wire? or will they pull a constant 12v each?
No, each will carry 12v. I wouldn't advise physically splitting the wire though - you loose the insulation which is dangerous and you reduce the size of the wire which means that it may not be suitable for high current and could melt.
Q: Hi,I'm trying to install a ceiling light with a 3 wire configuration (white, black, ground) into a wire configuration of 4 wires (white, red, black, ground). This is configured for two on/off switches.So far, I have white to white, black to black, and ground to ground with the red capped off. This works with one switch perfectly, however when I hit the other switch, the circuit breaker blows.Please help, and thank you!
A circuit consists of two conductors not counting the green/bare, but can have more than two. Also a circuit can branch off and energize other things. Thus you have branch circuits. The ceiling box fan probably is a branch circuit consisting of two or three maybe four conductors i.e., black, red, white and green/bare. A ceiling fan will pull a load/current of usually 2 amps but can be a lot more. A 60watt incandescent light bulb pulls 1/6 of an amp, or 4 60watt bulbs is around 2amps. By and far the amount is very low considering most general lighting circuits can handle up to 20amps without any problems.
Q: what to do if i unhooked my starter without unhooking my battery and the hot and gound wire caught on fire
Unhook your battery and replace both wires.
Q: Why when you loop a straight wire into loops (coil), it acquires a higher inductance?
If the ends of the wire are joined to form a circuit each loop forms a path for induced current, the currents of each loop are accumulative.
Q: Why does a thin wire melt and a thick wire glow when put up to the terminals? Explain in terms of resistance and current. Thanks=]
the electrical restistance of a thin wire is greater that the tick wire. thus : Watt = current * current * resistance if the resistance of the thick wire is 10 times the resistcance of the thin wire , then ( with same voltage ) you have for small wire Watt = current * current * resistance for thick wire Watt = 10*current * 10*current * (resistance/10) = 10current current resistance. so the power generated in the thick wire is ten times more than the power in the thin wire ( if you keep the voltage the same ) so that is not why the smaller one melts. I dont know why it melts then, interesting
Q: I have an old sewing machine without a plug that needs wiring up but it doesn't have the modern wire colours. There's one red wire and one yellow. Does anyone know how to do this?Thanks =]
The red one is the earth wire so should go in the right part by the fuse and the yellow one is neutrol so goes in the top middle bit :) Hope that helps

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