Lock Wire From Malin Co.

Lock Wire from Malin Co.

Malin Co is the world’s leading supplier of lock wire. Since 1884, Malin has supplied high quality lock wire for aerospace applications, hardware, and industrial wholesale companies.

Lock wire is designed to ensure that fasteners are tight and secure. They are a positive locking device that functions as a safety mechanism to prevent the loosening of fasteners. It is usually threaded through the fasteners hole, twisted onto another part of fastener and then twisted again

Malin’s color-coded cans make it easy to identify their lockwire types. The blue canister is the famous stainless-steel lock wire. The yellow cans are Inconel lockwire. The orange canister is oxidized Inconel safety lockwire. And the red cans are Monel lock wire.

Each can is recyclable and made from high density polyethylene. Unlike the standard paper canisters, Malin’s canisters won’t degrade and will keep lock wire free of grease and other corrosive materials. Lockwire from Malin Co is available in spools, coils, and bulk purchase.

Use of Lockwire

Lockwire is used to secure together two or more parts with a wire that must be installed in such a manner that any tendency for a part to loosen will be counteracted by an additional tightening of the wire.

The common method of installing lockwire shall consist of two strands of the lock wire twisted together. This is called the “Double Twist” method. The single strand method of lock wiring may be used for some applications, such as in a closely spaced, closed geometrical pattern. (triangle, square, rectangle, circle)

When multiple groups are locked by either method, the maximum number in a group should be determined by the number of unites that can be lock wired by a 24inch length of wire.

It is important not to install lock wire in a manner that the wire may be subjected to chafing, fatigue through vibration, or additional tension other than the tension imposed on the wire to prevent loosening.

Lock Wire

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safety wire lockwireExclusive Safety Wire – Lock Wire Canister

Color coded cans for easy safety lockwire identification. Our exclusive recyclable canister is molded from high-density polyethylene. Unlike standard paper canisters, Malin’s Lockwire Dispensing Canisters won’t degrade and they will keep your wire free of grease and other corrosive materials.


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 NumberNominal 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.


Inconel Aerospace Lockwire / Safety Wire

(Yellow Canister)

Part NumberNominal 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.


Oxidized Inconel Aerospace Lockwire / Safetywire

(Orange Canister)

Part NumberNominal 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.


Monel Aerospace Lockwire / Safety Wire

(Red Canister)

Part NumberNominal 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.


Copper & Brass Breakaway Wire

(Available in 1lb & 5lb Spools)
Breakaway Wire typically sold in 1lb spool. 5lb spools and other packaging options are available.

CopperNominal Diameter
ASTM B3.0126
ASTM B3.016
ASTM B3.0201
ASTM B3.022
ASTM B3.032

** Other sizes and packaging options available.

BrassNominal Diameter
ASTM B134.010
ASTM B134.016
ASTM B134.020
ASTM B134.032
ASTM B134.041

** Other sizes and packaging options available.

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