Lock Wire

Brookfield Wire is a leading manufacturer of safety lock wire. For over 50 years we’ve been supplying the aerospace, military, oil and gas, automotive, and other industries with high-vibration environments high-quality, dependable safety wire. We design annealed solutions specifically for the most critical applications.

Safety Wire gets its name from the aircraft industry. Essentially, “safety” in this context means that all bolts, nuts, and screws are secured so they do not loosen or fall out. It is beneficial to make safety wire out of a malleable alloy like stainless steel so that the safety wire maintains its shape, which helps strengthen the fastener it is attached to. That being said, Brookfield Wire can also manufacture safety wire from monel and Inconel if needed. Selecting the right alloy and the right size, it is important to calculate every aspect of what the safety wire will be exposed to, including high pressure, high temperature, and significant vibration or jolting. Working with Brookfield Wire offers a significant advantage not only because we can assist in selecting the perfect material and spec, but also because we can offer customized solutions if needed. Whether you need safety wire for a fleet of planes or for something on a smaller scale, Brookfield Wire can help.


Tempers are supplied to manufacturing specifications.


“BrookBright”, matte, bright and soap drawn are standard. Special purpose coatings, including NYLON, are also available upon request.


Typical: .020″ to .063″

*Other sizes available upon request.

lock wire | safety wire

Standard Alloys

  • Inconel 600

  • Inconel 601

  • Blk Inc 600

  • Cadmium Plated Copper Wire (CY)

  • Anodized Aluminum Wire (AB)


  • 1 pound spool in Polyethylene Cannister

  • 1 pound, 5 pound, and 10 pound spools

  • Handi-Pak Coils & Bobbins New England Butt, Wardwell 16 & 24 Carrier and Hacoba.

  • Other packaging available upon request

Big Savings on Lock Wire

Discover how much you can save buying lock wire in bulk from Brookfield.

What is Lock Wire?

Lock wire, commonly known as safety wire, is a tiny component that plays a vital role in a variety of industries. Brookfield Wire’s design ensures that fasteners remain tight for dependable performance. If safety wire is not built up to spec, the harsh conditions present, for example, in an aircraft, can loosen the bolts, nuts, and screws that hold key components together. As a result, dangerous mechanical failures can occur. Naturally, failure is not an option. The same logic holds true in sports crafts, braking mechanisms, and more. The fact that Brookfield Wire has successfully manufactured safety wire for decades is a testament to our expertise and experience.

Industries with high-vibration environments require dependable lockwire. The continuous shaking, jolting, and jarring of industrial applications tend to loosen the hold of fasteners. As a result of a loosening bolt, dangerous mechanical failures can occur. When it comes to mission-critical flight controls, throttle mechanisms, and braking devices, failure is not an option.

Safety wire is threaded through fasteners in order to cancel out the torque force of fasteners attempting to unwind. Therefore, lock wire is a critical tool to ensure not only top performance but also the safety of your team. Applications such as sports cars, aircraft turbine engines, and even weaponry benefit from safety lock wire. Other systems such as braking mechanisms, throttle systems, and even flight controls rely on lock wire to prevent serious malfunctions and to keep all valuable components in place.

Whatever your application, you want to work with a manufacturing partner you can rely on. If we can succeed for decades where no error is permissible, you can trust us to handle your application with the utmost care and skill.

Our Products | Brookfield Safety Wire

Brookfield has extensive knowledge of the wire industry. As a DFARS-compliant company, we offer top-grade, reliably sourced products that are the best on the market. We have a diverse range of capabilities and commodities, including the ability to customize wire products to exact requirements.

Brookfield offers diverse alloys, sizes, tempers, finishes, and packaging. Last, but not least, our manufacturing specifications include NASM, ASTM, AMS, QQ, and MS.