Double Acting Spring Hinges -Specification
1993 Edition

IS 453 Scope Overview and Sampling Requirements

• Scope: Defines specifications for double-acting spring hinges including materials, manufacture, and testing.
• Sampling & Acceptance (Clause 2.1): Sample sizes vary with lot size, with acceptance limits according to Table 1:

• Rounding Off (Clause 12.1): Test results are rounded following IS 2:1960, preserving significant figures as specified.
• Referenced Standards: Includes IS 280, IS 4454, IS 292, IS 319, IS 410, IS 4905, and IS 7608.

This section ensures compliance with quality and material standards for spring hinges under IS 453.

Summary of Indian Standards Referenced in IS 453

Clause 2.1 and Annex A specify relevant Indian Standards for materials and testing:

Highlights:

• Material specifications for steel, brass, and phosphor bronze are covered.
• Sampling and conformity procedures are governed by IS 4905 and IS 7608.
• Compliance certificates as per these standards are mandatory.
• BIS monitors quality through licensing and inspection.

Usage Advice:

• Consult these IS codes for material quality, testing, and acceptance when manufacturing spring hinges per IS 453.

Classification and Dimensions of Double-Acting Spring Hinges under IS 453

Types (Clause 3.1)

• Double-acting spring hinges made from mild steel
• Double-acting spring hinges made from brass

Size Specifications (Clause 5.1)

Dimensional Details (Clause 6.1 & Figures 1 & 2)

• Dimensions conform to detailed figures in IS 453.
• Features include countersunk holes for No. 10 wood screws and fork assembly via removable pin.

Additional Information

• Thickness and other dimension details depend on the hinge type.
• Material choice impacts corrosion resistance and mechanical strength.

Refer to the standard’s figures for comprehensive dimensional data.

Material Standards and Specifications in IS 453

1. Referenced Material Standards (Annex A, Clause 2.1)

• Mild steel wire to IS 280:1978
• Spring steel wires to IS 4454 (Part 1):1981
• Leaded brass ingots and castings per IS 292:1983
• Free cutting brass bars and rods per IS 319:1989
• Cold rolled brass sheets per IS 410:1977

2. Sampling and Acceptance (Clause 2.1, Table 1)

• Sampling limits ensure quality control.

3. Brass Hinge Thickness (Clause 1.60, Table 7.2)

• Cylindrical casing minimum thickness: 1.60 mm (brass sheet or solid brass tube).
• Fork components brazed and machined for fit.

Summary:

• Use IS 280 and IS 4454 for wire requirements.
• Follow sampling sizes for quality assurance.
• Brass flap thickness varies with hinge size.

Dimensions and Sizes as per IS 453 for Double-Acting Spring Hinges

1. Hinge Sizes (Clause 5.1)

2. Dimensioning Details (Clause 6.1)

• Must adhere to measurements shown in Figures 1 and 2.
• Includes length, width, pin diameter, and flap dimensions.

3. Brass Hinge Thickness (Clause 1.60)

• Casing thickness must be at least 1.60 mm.
• Forks made from mild steel or rolled brass, brazed to caps.

4. Sampling for Quality Control (Clause 2.1)

Summary: Select from sizes 100, 125, or 150 mm; apply thickness per material; follow figures for exact dimensions.

Design and Manufacturing Guidelines under IS 453

1. Material Compliance

• Manufacturers must supply certificates verifying adherence to Indian Standards like IS 280, IS 292, and IS 319.
• Materials include mild steel wire, brass ingots, and phosphor bronze wire.

2. Sampling and Acceptance (Clause 4.1, Table 1)

• Lot acceptance depends on the maximum allowed defective hinges in a sample.
• Lots exceeding defect limits are rejected.

3. Design Considerations

• Hinges are designed for double-acting spring functionality ensuring smooth door movement.
• Use materials conforming to IS codes to guarantee durability.
• Follow quality control and testing requirements outlined in IS 453.

4. Referenced Standards

Summary: Ensure raw materials meet standards; apply rigorous testing; adhere to design specs for reliable hinges.

Manufacturing and Quality Control Requirements in IS 453

1. Sampling and Defect Limits (Clause 2.1)

2. Material and Component Specs (Clause 1.60)

• Cylindrical casing must be brass sheet or solid brass tube, thickness ≥ 1.60 mm.
• Caps are cast brass, machined to fit forks.
• Forks fabricated from mild steel or rolled brass, forged and turned.
• Flap thickness varies by size and brass type:

3. Rounding Off

• Test results rounded according to IS 2:1960 to maintain specified precision.

Summary: Follow strict sampling, material, and manufacturing standards to ensure hinge quality.

Surface Finishing Requirements for Hinges under IS 453

Specifications (Clause 8.1)

• Mild Steel Hinges:
  • Finished with stove-enamelled black or copper-oxidized coating.
• Brass Hinges:
  • Available finishes include satin, bright, nickel plating, or copper oxidation.

Additional Notes

• These finishes enhance corrosion resistance and visual appeal.
• Certificates of compliance for materials must be provided by manufacturers.

Related Standards

Summary: Proper finishing ensures durability and aesthetic quality in line with IS 453.

Overview of Performance Testing for Double-Acting Spring Hinges per IS 453

• The standard does not provide explicit formulas or detailed test tables but highlights key testing principles.
• Test results must be rounded following IS 2:1960.
• Sampling and conformity are governed by Clause 2.1 and Annex A, with acceptance criteria given in the sampling tables.
• Finishes affect performance, offering corrosion resistance:
  • Mild steel: stove-enamelled black or copper-oxidized.
  • Brass: satin, bright, nickel-plated, copper-oxidized.

Recommended Testing Approach:

• Employ random sampling methods as per IS 4905 and IS 7608.
• Follow material-specific test procedures from referenced IS codes.
• Evaluate results against sampling acceptance criteria.

Summary Table:

For detailed testing protocols, consult the referenced IS standards.

Marking Guidelines under IS 453

Clause 10.1:

• Hinges may bear the BIS Standard Mark indicating compliance with IS 453.
• This mark confirms adherence to quality, inspection, and testing standards supervised by BIS.

Marking Elements:

• Manufacturer identification
• BIS Standard Mark
• Batch or lot number for traceability
• Material grade or type where applicable

Acceptance Criteria (Clause 4.1, Table B-4):

• Lot acceptance depends on the number of defective hinges being within permitted limits per the sampling plan.
• Manufacturers must provide certification for material conformity.

Summary Table:

Marking ensures traceability and quality compliance.

Packaging and Labeling Specifications in IS 453

• Labeling (Clause 11.2): Packages must be clearly labeled with:

  • Manufacturer’s name or trademark
  • Quantity of hinges contained
  • Description and contents
  • Size and type of hinges (blank or double-acting)

• Lot Definition (Clause B-1.1): A lot comprises spring hinges of the same type and size produced simultaneously.

• Sampling and Quality Control (Clause 12 & Annex A): Sampling adheres to IS 4905 and IS 7608 for random selection.

• Rounding of Test Results: Must follow IS 2:1960 for significant figures.

Summary Table:

Proper labeling ensures traceability and conformity with quality standards.

Sampling Plans and Acceptance Criteria as per IS 453

Key Details (Clause 12.1 and Table B-2.1)

• Sample size is determined by the lot size.
• Acceptance depends on the maximum number of defective hinges allowed in the sample.

Sampling Procedure:

• Select sample size based on lot size.
• Inspect sample hinges.
• Accept lot if defective hinges ≤ permissible limit; otherwise, reject.

Additional Notes:

• Package labeling must include manufacturer, quantity, description, size, and hinge type.
• Random sampling methods per IS 4905:1968 and IS 7608:1987 are applicable.

This ensures consistent quality control and conformity.

List of Indian Standards Cited in IS 453 (Annex A, Clause 2.1)

This standard refers to Indian Standards critical for materials and testing:

Highlights:

• Certificates for material conformity per these standards are mandatory.
• Sampling and acceptance criteria are detailed in Clause 2.1.
• These standards ensure uniformity and quality in hinge materials.

Refer to these IS codes for detailed material and testing guidelines.

Detailed Sampling and Acceptance Procedures According to IS 453

1. Sampling Scale and Acceptance Limits (Clause 12.1 & Table 1)

• Sample size depends on lot quantity.
• Lots with defects exceeding allowable limits must be rejected.

2. Labeling Requirements (Clause 11.2)

• Each package must include:
  • Manufacturer's name or trademark
  • Quantity
  • Description and contents
  • Size and hinge type (blank or double-acting)

3. Referenced Standards (Annex A)

• IS 280, IS 292, IS 319, IS 410, IS 4454, IS 4905, IS 7608

These procedures assure quality through statistically sound sampling and proper labeling.

Committee Responsible for IS 453

• The standard was developed by the Builders Hardware Sectional Committee, CED 15.
• Details on committee composition and members are provided in Annex C.

Sampling and Acceptance Table (Clause 2.1)

This table guides sampling and conformity decisions for quality assurance.