Malin Co. is the leading supplier of lock wire, safety wire, and other stainless steel wire products. We have been producing high-quality safety wire and lockwire products since 1884. Furthermore, our safety lock wire products are ideal for aerospace applications as well as hardware and industrial wholesale companies.
Lock wire’s design ensures that fasteners are tight enough. Malin’s lockwire is a positive locking device, which functions as a safety mechanism to prevent the loosening of fasteners. Typically, lock wire is threaded through the fastener’s hole, twisted onto another part or fastener, and then twisted again.
What is Lock Wire?
Lock wire is an extremely versatile and useful tool for a wide variety of different industries. Nuts, bolts, and screws have the tendency to loosen themselves over long periods of time, and lockwire’s function is to prevent his from occurring. Thus, safety lock wire is a necessity for many industrial applications. The loosening of a bolt can result in dangerous mechanical failures in industrial and aerospace applications; therefore, lock wire is a critical tool in ensuring successful operation and the safety of employees.
Exclusive Lock Wire – Lockwire Canister
We offer color-coded canisters for quick and easy identification of lockwire. This exclusive canister is completely recyclable, containing high-density polyethylene. Our lockwire canisters are also the best option to prevent degradation. Malin’s Lock Wire Dispensing Canisters never degrade and protect your lockwire from grease and any other corrosive materials.
| Copper | Nominal Diameter |
|---|---|
| ASTM B3 | .0126 |
| ASTM B3 | .016 |
| ASTM B3 | .0201 |
| ASTM B3 | .022 |
| ASTM B3 | .032 |
** Other sizes and packaging options available.
| Brass | Nominal Diameter |
|---|---|
| ASTM B134 | .010 |
| ASTM B134 | .016 |
| ASTM B134 | .020 |
| ASTM B134 | .032 |
| ASTM B134 | .041 |
** Other sizes and packaging options available.
Stainless Steel Aerospace Lockwire / Safetywire
(Blue Canister)
Standard materials: Stainless steel type 302/304 ASTM A 580, 305 and 316 stainless available upon request.
| Part Number | Nominal Diameter |
|---|---|
| NASM / MS20995C15 ASTMA580 | .015 |
| NASM / MS20995C20 ASTMA580 | .020 |
| NASM / MS20995C21 ASTMA580 | .021 |
| NASM / MS20995C25 ASTMA580 | .025 |
| NASM / MS20995C32 ASTMA580 | .032 |
| NASM / MS20995C41 ASTMA580 | .041 |
| NASM / MS20995C47 ASTMA580 | .047 |
| NASM / MS20995C51 ASTMA580 | .051 |
** Other sizes and packaging options available.
| Part Number | Nominal Diameter |
|---|---|
| NASM / MS9226-01 AMS 5687 | .016 |
| NASM / MS9226-02 AMS 5687 | .020 |
| NASM / MS9226-03 AMS 5687 | .025 |
| NASM / MS9226-04 AMS 5687 | .032 |
| NASM / MS9226-05 AMS 5687 | .040 |
| NASM / MS9226-06 AMS 5687 | .051 |
| NASM / MS9226-07 AMS 5687 | .063 |
| NASM / MS9226-08 AMS 5687 | .091 |
** Other sizes and packaging options available.
| Part Number | Nominal Diameter |
|---|---|
| NASM / MS20995N20 ASTM B166 | .020 |
| NASM / MS20995N25 ASTM B166 | .025 |
| NASM / MS20995N32 ASTM B166 | .032 |
| NASM / MS20995N40 ASTM B166 | .040 |
| NASM / MS20995N51 ASTM B166 | .051 |
** Other sizes and packaging options available.
| Part Number | Nominal Diameter |
|---|---|
| NASM/MS20995NC20 ASTM B164 | .020 |
| NASM/MS20995NC25 ASTM B164 | .025 |
| NASM/MS20995NC32 ASTM B164 | .032 |
| NASM/MS20995NC40 ASTM B164 | .040 |
| NASM/MS20995NC51 ASTM B164 | .051 |
** Other sizes and packaging options available.
Tips for Installing Lockwire
Nuts, bolts and screws must be tightened to their proper torque before application of lockwire. It is also important to align holes between fasteners whenever possible.
Upon completing installation, the lockwire should be tight enough to prevent the nuts or bolts from moving.
The lockwire should always cause the nut or bolt to tighten rather than loosen. Install the wire so that it goes around the top of the head of the nut or bolt and pulls in the correct direction.
Avoid putting undue stress on the wire through over-winding or kinking, as this leads to weakness and breakage.
Leave 4 to 6 turns after the loop when cutting your lockwire.
