Aircraft Safety Lock Wire - Security thread locking is the method of locking a nut in place after tightening the bolt with a locking thread. A piece of stainless steel wire passes through the hole in the nut and provides the load of the locking wire to the nut and the other end is secured to the body. So the nut will not loosen itself.
Safety thread locking is the most positive and satisfactory way of securing cap screws, studs, nuts, bolt heads and turnbuckles, which cannot be securely fastened in any other practical way. It is a method of joining two or more units together in such a way that any tendency to loosen is counteracted by tightening the thread.
Aircraft Safety Lock Wire
Security threads are threads used to prevent bolts, screws, nuts and other types of fasteners from loosening. It is usually made of stainless steel, but is also available in Monel and Inconel alloys for high temperature applications and copper for breakaway applications.
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Do not use stainless steel safety lock wire, monel, carbon steel or aluminum alloy to secure emergency equipment such as switch handles, guards covering exit handles, fire extinguishers, emergency equipment or other emergency equipment.
Some existing structural equipment or emergency flight safety equipment requires brass or copper safety wire (diameter 0.015 to 0.020 only), with the successful emergency operation of the equipment depending on the safety wire that is cut or broken.
The single thread method is used in screws, bolts and/or nuts in closely spaced or closed geometric patterns such as triangles, squares, rectangles or circles. The single wire method can also be used on components in electrical systems and in hard-to-reach places.
When using the double wire twist method of safety wiring, wire with a minimum diameter of 0.032 in. Safety wire with a diameter of 0.020 inch (double strand) can be used in parts with nominal hole diameters between 0.045 and 0.062 inches with part spacing of less than 2 inches.
In Aircraft Safety Wire Twist Twisting Pliers Twister Lock Racing German Op 028
When using the single wire method, use the largest wire size that will fit in the hole. Copper wire (diameter 0.020 inch), aluminum wire (diameter 0.031 inch), or other similar wire requested in special engineering orders, should be used as seals on equipment such as first aid kits, portable fire extinguishers, emergency valves, or oxygen regulators.
Hardware or loose components have caused accidents, many of them fatal. Safety wire is required in areas where bolts may loosen during vibration. Used correctly, it will lock so that the wire remains taut and prevent further movement. Think of it like wearing a belt with your suspenders.
Safety wire is not intended to replace the proper installation of fasteners. Always make sure that the fasteners or components are tightened to the correct torque first and then install the safety cable.
Safety wire should not be overloaded. Will break in vibration if twisted too tight. The security thread must be pulled taut when twisted and maintain a slight tension when secured.
A Musing On Modeling Safety Wire
The end of the safety wire must be bent under and inward towards the component to prevent sharp or protruding ends, which can cause safety hazards.
NOTE: Use copper wire where a seal is required on emergency equipment to indicate that no one is using the equipment. Emergency equipment includes a portable fire extinguisher, first aid kit, emergency valve and oxygen regulator.
A security thread twister is a device that allows the user to grasp two loose ends of a length of security thread to twist the security thread.
When using wire twisters, if the wire extends 3 inches beyond the jaws of the twisters, wrap the wire loosely around the pliers to avoid whiplash and possible personal injury. Excessive thread twisting will weaken the thread.
Safety Lock Wire
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The stainless steel safety wire is supplied in a convenient 1lb dispensing container. Available in type 302/304 stainless steel (soft temperature) per MS20995.
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Great safety thread. The same thing I use on the flight line. Fast shipping and perfect item description.
Exactly what you would expect. It would be nice to be able to buy a smaller container as I only use it for the propeller. But that is not against the quality of the product
As advertised, the key wire is the same as the airline I used to work in the store
ACS can get it to me when every other supplier apologizes about the snapback in the supply chain. Face it, you're working on an airplane in a garage AND at an airport, and you need 3 sizes of safety wire in both places. Bite the bullet and spend $10 per can.
Safety Lock Wire (.032)
Excellent, but extra stable. Like a stabby plaster. And .041 is stiff. If your prop bolts are hard to handle, .020 is much easier to handle.
My life was sad and difficult until I received my beloved spool .032 safety thread. Upon the quick arrival of the Aircraft Spruce (which is rare due to the new routine of Rona and the US we display stock items as in stock), I was overwhelmed with joy because it came in a blue, plastic container (blue is my favorite color, except for the 90s Eiffel65 song about it ) that had a handy belt clip. The belt clip then became a safety hazard as it positioned the safety wire in the exact position to put .032 pure pain into my left love handle (it put a lot of strain on my fitness). As I screamed in terror and pain from the attempted blue wire kidney removal, I wished our country would reopen the gym and curse the existence of Governor Jay Inlees. Fortunately, the tab on the container loosened and broke my belt, eliminating me from being a lone blood donor. 10/10 will order again.
Best form factor for long-term, low-cost security wire needs. There is a choice of different gauges, you want the gauge that is mentioned in your aircraft manual. Spool holds thread well, plenty of length for long use. Turn strong, cut well.
I bought a 0.20 safety wire. Luckily it came in a plain blue plastic case with a belt clip. This fits my other two safety wire holders. I would have been disappointed if the wire had come in a cardboard container. At least for me, a pound of security thread lasts for years, hence the expected life of the container. Sometimes the container ends up with snow - cardboard is not good.
New Aircraft Safety Lock Wire Ms20995c32 1 Lb. Roll .032” Diameter T302/304 Ss
Aside from the nearly $15 shipping for an $8.1lb spool of safety thread, the experience was great.
I actually used this on my protective mask for the pandemic. The wire is easy to use, easy to cut and easy to manipulate.
Exactly the security thread I was looking for. However, the container is a cardboard tube container and would have wished a longer plastic container would have worked.
Not much to say... a safety thread is a safety thread (at least I assume/hope so, since I don't have a metallurgy degree to confirm). But ACS support and delivery speed was great, as always... and the price was right.
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A good product is made to specification. The service I received was excellent. Good price, fast delivery and easy to navigate the website. thanks
The right product at a good price with good order and execution time. What more could I ask for? ASSC is now my favorite place.
New dispenser design - shows aviator/builder insight. Use of the headbolts on the O-200 continent to put the hardware fabric on the chain link fence to keep the mouse out. Truly a universal staple in the toolbox.
Indispensable for aircraft maintenance. Good value should last for a while for my needs.
Stainless Steel Aircraft Safety Wire
I have bought from Aircraft Spruce before. High quality bespoke thread. I recommend your company to everyone. Shipping was fast and packaged very well. thanks
Safety wire (.041) arrived on time as stated on the order. The coil itself is also packaged to facilitate dispensing. It will not unwind like traditional spools of safety thread. great product!!!
Sports $17.95, Spar $9.95. Sportys refused a price match and named another manufacturer. Sportys Awak flight free shipping (refusal for 6 months to return the money and said I had used it!) never Sportys again! Wasted $18 on Amazon for a pkg
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