What types of wood can be used to make these toggles?

Hard and durable timbers like Teak, Sal, Haldu, Axlewood or Laurel as specified in IS 399 are recommended (Clause 3.1).

What are the standard dimensions for a Type 1 wooden toggle?

A Type 1 toggle should have a length of 100 mm, a body diameter of 25 mm, and a central hole diameter of 8 mm (Table 1).

What is the maximum allowable moisture content in the wood?

The moisture content of the timber shall not exceed 12 percent at the time of manufacture (Clause 3.2).

Are there different sizes of toggles specified in this standard?

Yes, the standard specifies two sizes: Type 1 (100mm long) and Type 2 (150mm long) with corresponding diameters (Table 1).

IS 10420

: 1982

wooden toggles

CurrentSpecializedSpecificationMaterials Science · Timber and Timber Stores

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This standard specifies the material requirements, dimensions, workmanship, and finish for two types of wooden toggles. It details the permissible timber species, acceptable defects, and dimensional tolerances for these general-purpose fastening components. The toggles are typically used with ropes for applications like securing tents, tarpaulins, and in temporary structures.

wooden toggles

Quick Reference Values

Maximum permissible moisture content12 %

Type 1 Toggle Length100 mm

Type 1 Toggle Diameter25 mm

Type 1 Toggle Hole Diameter8 mm

Type 2 Toggle Length150 mm

Type 2 Toggle Diameter38 mm

Type 2 Toggle Hole Diameter12 mm

Practical Notes

Ensure the timber is well-seasoned to a moisture content not exceeding 12% to prevent dimensional changes and cracking after manufacture.

Carefully inspect for prohibited defects like decay, live insect attack, and loose or dead knots, as these can significantly reduce the toggle's strength.

Verify the finish is smooth and free from splinters, and optionally treated with a preservative like linseed oil for enhanced durability.