Safety wire double twist method. Single-Wire Method Geometrical Patterns for Wire Locking. Safety wiring, or positive wire locking, is a type of locking device that is the most positive and satisfactory method of securing or safetying cap screws, studs, nuts, bolt heads, and turnbuckle barrels, which cannot be safetied by any other practical means. There are two methods of safety wiring; the first is the double-twist method. Figure 1-12 shows the single-stranded method, while the other figures show the two-stranded or double twist method. a. Dec 18, 2024 · For the single wire method, you must twist the wire end with protrusion back to the wire. Detailed Instructions For The Installation Of Lock Wire Check the units to be lock wired to make sure that they have been correctly torqued. When Installing lockwire to closely spaced bolts, the number that can be secured by a 24-inch length of wire will be the maximum number In a series. Verify the method (single or double twist) meets the drawing requirements. Double-Twist Method 2. Tips and tricks to safety wire 2 and 3 bolt patterns using the standard double twist method. Fasteners are arranged in clusters of straight and triangular patterns for practicing wire locking. Methods of Safety Wire Locking 1. This is most commonly used method of safety wiring. When using the single-wire method, use the largest NOTE When installing lockwire to widely spaced bolts by the double-twist method, a group of three will be the maximum number in a series. Jul 10, 2025 · DOUBLE TWIST METHOD – The double twist method of safety-wiring shall be used as the common method of lock wiring. The wire locking may be applied in a single or double pattern as per the standard aviation maintenance practices. There are two methods of safety wir-ing; the double-twist method that is most com-monly used, and the single-wire method used on screws, bolts, and/or nuts in a closely-spaced or closed-geometrical pattern such as a triangle, square, rectangle, or circle. The primary downside to the single wire method is that a failure of the wire will afect all of the fasteners simulta-neously. Verify daily calibration of safety cable installation tool. The line of approach of the lock wire must be approximately tangential to the parts that you will lock. All safety wire applications excluded from the single wire method shall employ the double twist method. If method is not specified, verify that the method is appropriate according to NASM33540 Verify that lockwire pigtail has been bent back or under to prevent snagging per NASM33540, Section 5. The second, and less often used method, the single-wire method. Fig-ure: 1 & Figure: 2. The single wire method may be used on small screws in a closely spaced closed geometrical pattern, on parts in electrical systems, and in places that are extremely difficult to reach. For the double wire method, you must bend the wire ends with protrusion back to the wire or the part that you lock (e. The double twist method is the most common method of safety wiring. screw/nut). There are two methods of safety wiring; the double-twist method that is most commonly used, and the single-wire method used on screws, bolts, and/or nuts in a closely-spaced or closed-geometrical pattern such as a triangle, square, rectangle, or circle. There are two methods of safety wiring;the double-twist method that is most commonly used, and the single-wire method used on screws, bolts, and/or nuts in a closely- spaced or closed-geometrical pattern such as a triangle, square, rectangle, or circle. g. qqujuijxlsuvkedilhjpbheimbbcwkhqbibhwsdfcyzloqjgj