This standard outlines the specifications regarding materials, dimensions, manufacturing processes, and finishing for hat, coat, and wardrobe hooks used in residential and commercial environments. It is intended for manufacturers, suppliers, and inspectors to ensure these hooks comply with set durability, design, and safety requirements. The document also details sampling techniques and acceptance criteria to guarantee consistent product quality.
Overview
This standard outlines the specifications regarding materials, dimensions, manufacturing processes, and finishing for hat, coat, and wardrobe hooks used in residential and commercial environments. It is intended for manufacturers, suppliers, and inspectors to ensure these hooks comply with set durability, design, and safety requirements. The document also details sampling techniques and acceptance criteria to guarantee consistent product quality.
Audience
Contents
Structure
Overview of hook types covered, including hat, coat, and wardrobe hooks; specification of minimum size, material standards, and compliance conditions.
Details of relevant Indian Standards for materials, dimensions, and sampling procedures applicable to hook manufacturing.
Material grades permitted; dimensional requirements; manufacturing processes ensuring durability and proper construction.
Minimum height, projection, back plate thickness, hook diameter, and number of fixing holes necessary for compliance.
Permitted materials with corresponding Indian Standard grades, including mild steel, brass, and aluminium alloys.
Surface treatment requirements by material type, including anodizing, plating, enameling, and finishing techniques.
Guidelines for permanent marking of manufacturer's identification and optional ISI certification marks.
Procedures for selecting samples from production lots and criteria for lot acceptance or rejection based on defect counts.
Detailed method for sample selection, permissible defective limits, and conformity evaluation for production lots.
Frequently Asked
The standard permits the use of materials such as mild steel sheet (Grade 0-1079 as per IS:1079-1973), brass sheet (Grade CuZn 40 according to IS:410-1977), cast brass (Grade 3 as per IS:292-1961), aluminium alloy sheets (Designation 52000 or 65032 under IS:737-1974), aluminium alloy die castings (Designation 4600 or 5230 per IS:617-1975), and aluminium alloy extruded profiles (Designation 65032 WP or 64430 WP as per IS:733-1975). Finishes vary by material to enhance durability and appearance.
Typical minimum dimensions include an overall height of 50 mm and a projection of 30 mm, with a back plate thickness not less than 2 mm, and a hook diameter of at least 4 mm. Additionally, hooks must have a minimum of two screw holes sized for No. 6 wood screws to ensure secure attachment. These measurements guarantee strength, usability, and safety.
Hooks should have smooth surfaces with no sharp edges. Aluminium hooks require anodizing to at least Grade AC 10 according to IS 1868-1968 or equivalent dyed finishes. Brass hooks must exhibit bright or satin finishes and may be lacquered, nickel plated, copper oxidized, or bronze finished. Mild steel hooks are typically stove-enameled black. All finishes enhance corrosion resistance and aesthetic quality.
Hooks from a lot—defined as those of identical shape, size, material, and batch—are sampled by randomly selecting at least 10% of the packages, picking a minimum of 3 hooks from each selected package. The sample undergoes inspection for dimensional accuracy, manufacturing quality, and finish. Hooks failing any criteria are deemed defective. The lot is accepted if the defective count does not exceed the allowable limit specified in the standard's sampling tables.
Marking hooks with the ISI certification mark is optional. While manufacturers may choose to include the ISI mark to signify compliance with Indian Standards and quality assurance, it is not mandatory. Use of the ISI mark requires a valid license and adherence to inspection and testing protocols set by the certification authority.
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