I have lost one of the screws that hold the wires on and no hardware or lumber yard or auto place carries them. Where can I order one

Is this a vehicle? What is year--make--model?
What blade are you talking about? Hardware stores, lumber yards usually has lots of screws. You can take a look, see if you can find a screw that might work?

A shoe store that repairs shoes could do it. Or you can get a pop rivet tool and rivets and washers at any hardware store or lumber yard like home depot etc.

If you are in the US then this link may be useful. WC3 78 Suburban Wood Stove Parts

You did not say where you live, so here in the city, we buy such stuff at any of the following places. A plumbing supply store, a hardware store, an appliance parts sales store, a lumber yard like Lowes, Home Depot, Menard's, etc., a Sears store, or if that doesn't help, try online, like at e-bay.
Be blessed.

I've found sevral peices of ARCHED lumber at my local lumber yards KULL pile or BONE pile. the trick is to find two that match in order to do anything with them. Your best bet is to cut your own out of a 2x10 or 2x8 ect l((l

Yes sure you can. You can order lumber on line and have it delivered to your home or workplace.

Here's an example of a site that does lumber deliveries;
http://www.fixya.com/support/t15886481-possible_order_lumber_over_internet

Instructions

Engage the emergency parking brake, to avoid causing the car to roll or move when removing the bumper.

Release the screws holding the wheel well liners in place with a screwdriver. This will expose the screws holding the bumper bolts. • Release the bolts holding the bumper in place, using a wrench, and have a friend support it while it remains wired to the car.

Disconnect the wiring running to the bumper to separate the fog lights from the car. Pull out the light fixtures from the bumper cover.

Remove the grill in the bumper cover, taking out the screws holding it into the cover. This will allow you to separate the grill and the bumper cover.

Secure the grill and light fixtures into the new bumper cover, using the hardware you removed from the old cover.

Reconnect the necessary wiring. Support the bumper cover in front of your car or have your friend hold it in place again.

Secure the bumper cover using the retaining bolts you took out earlier. Tighten the bolts to hold the bumper cover securely against the car.

Replace the wheel well liners with the screws you took out.

You can go to Sears Hardware,Home Depot,Lowes,
Lumber Yard,any place with grade 5 or grade 8 bolts

If they happen to be Metric,they have them also

Surely you have some similar thread bolts, you could try,
and when you get the thread size,you can figure out how
long you need them

Any Auto Parts Store, can take a water pump of the shelf
& try all the bolts they have,there

They just got rid of you. You have to learn the in's & out's
of the auto repair business & how to talk to them

most auto parts stores carry replacement parts -bolts,screws for just about every vehicle if is a hold down screw most hardware stores can match up screw or bolt

I had the same problem with the shifter cable braking.They were very expensive to replace.My cable tube(the outer part with the adjustable nuts) was still good.The cable itself was broken.I went to the nieghborhood hardware store and bought a length of cable of the correct size.I then used an electrical eyelet at each end (the eyelet has place to slide wire into it then it get crimped to hold the wire,also it has a hole in it so a screw or bolt can go through to hold it in place.I connected an eyelet to one end of cable,2nd I fed the cable through the tube,3rd, I put a screw through the hole were the cable connect to the shift linkage(@ trans),4th placed the eyelet on the screw 5th then placed the nut on the screw .At end of cable where shift nob is I placed an eyelet where the cable originally went,Pulled the new cable through taking out ALL the slack,Marked cable then crimped it,placed nut on screw.It works like new.MAKE SURE THE LINKAGE and SHIFT NOB ARE IN NUTURAL POSITION