What is the standard strength requirement for a single coat hook?

It must withstand a vertical load of 150 N (approx. 15 kgf) without deformation or damage (Clause 7.1).

What materials are specified for these hooks?

The standard covers cast brass, aluminium alloys, and zinc alloys as primary materials (Clause 4 and Table 1).

Does this standard cover the screws for the hooks?

No, it only provides recommendations for matching screws in Table 3. The fasteners themselves are not part of this specification.

What are the common hook types defined in this standard?

It defines Single and Double Hat & Coat Hooks, Cabin Hooks, and Wardrobe Hooks with specific dimensions in Table 2.

IS 9899

: 1981

Specification for hat, coat and wardrobe hooks

CurrentSpecializedSpecificationArchitectural · Builder Hardware

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This standard specifies the requirements for materials, dimensions, manufacturing, finish, and performance testing for various types of hat, coat, and wardrobe hooks. It covers hooks made from materials like brass, aluminum alloys, and zinc alloys, and includes details on protective coatings and strength requirements.

Specification for hat, coat and wardrobe hooks

Quick Reference Values

Strength test load for single hook150 N

Strength test load for each horn of double hook150 N

Minimum coating thickness (Service Grade SC 1)0.3 μm

Nominal projection for Type 1 single hook63 mm

Nominal projection for Type 4 wardrobe hook35 mm

Practical Notes

The strength test of 150 N (approx. 15 kgf) is a key quality indicator; non-compliant hooks may fail under the weight of a heavy coat or bag.

Ensure the hook's material (e.g., brass, zinc alloy) and finish (e.g., chrome-plated) are appropriate for the intended environment (e.g., humid bathrooms vs. dry wardrobes) to prevent corrosion.

Verify the supplied fasteners (screws) are suitable for the mounting surface, as the standard only provides recommendations (Table 3) and does not govern fastener quality.