Specification for Flush Drop Handle for Drawers
1980 Edition

Overview of Applicability & Principal Specifications

Scope (Clause 5.1)

• Pertains to flush drop handles conforming to dimensional data in Table 2 and illustrated in Fig. 1.
• The depicted shape serves as a guideline; adherence to all specified minimum dimensions is mandatory.

Critical Dimensions from Table 2 (millimeters)

• Screws specified are slotted countersunk wood screws matching IS 6760:1972.
• Thickness (t) is suggested but not compulsory.

Sampling and Inspection (Table 3)

Additional Notes:

• Final test results are rounded as per IS 2:1960.
• Standard aligns with global best practices.

flowchart LR
    A[Flush Drop Handle] --> B[Dimensions per Table 2]
    B --> C[Available Sizes: 75mm or 100mm]
    C --> D{Number of Screw Holes}
    D -->|4 Holes| E[Use IS 6760 Standard Screws]

Material Requirements for Flush Drop Handles (IS 9460)

Approved Materials (Clause 2.1, Table 1)

Important Notes:

• Due to limited availability, non-ferrous materials like copper and zinc alloys are mainly allocated for export items.
• Use of non-ferrous materials for domestic manufacturing is discouraged to conserve resources.

Sampling and Quality Inspection (Clause 1.2, Table 3)

Rounding Off Guidelines (Clause 0.5)

• Test results shall be rounded in accordance with IS 2:1960, matching the significant figures of the specified values.

This section ensures materials and quality checks conform to IS 9460 for flush drop handles.

Standard Dimensions for Flush Drop Handles (IS 9460: Clause 5.1 and Table 2)

• All dimensions are in millimeters.
• The handle's shape is indicative; compliance with minimum dimensions is essential.
• Fixing screws are slotted countersunk head wood screws as per IS 6760-1972.

Material Grade References (Clause 2.1 and Table 1)

Summary

• Refer to Table 2 for dimensional adherence.
• Use specified material grades from Table 1 for production.
• Maintain compliance with all dimensional and material standards.

IS 9460 - Guidelines for Manufacturing Flush Drop Handles

1. Approved Materials (Clause 2.1, Table 1)

Ensure materials conform to the following IS grades:

2. Dimensions and Fixing (Clause 5.1, Table 2)

Note: Dimensions are in millimeters. The shape is indicative; all dimensional requirements must be met.

3. Sampling and Quality Checks (Clause 1.2, Table 3)

IS 9460 - Specifications for Surface Finishing of Flush Drop Handles

1. Material Compliance (Clause 2.1, Table 1)

Materials must meet relevant Indian Standard grades:

2. Dimensional Details (Clause 5.1, Table 2)

Key handle dimensions (mm):

3. Finishing Criteria

• Finish must provide resistance to corrosion and ensure durability.
• Mild steel handles are to be stove-enamelled in black.
• Aluminium alloy handles require anodizing (minimum Grade AC 10 per IS 1868-1968), with finishes such as bright, natural, matte, satin, or dyed.
• Brass handles may have bright satin, nickel plating, copper oxidation, or bronze finishes based on purchaser requirements.

flowchart TD
    A[Material Selection] --> B[Manufacturing Process]
    B --> C[Dimension Verification (Table 2)]
    C --> D[Surface Finish Application]

IS 9460 - Marking Requirements for Flush Drop Handles

Marking Provisions (Clause 8.1.1)

• Handles may bear the ISI Certification Mark indicating conformity.
• The ISI mark certifies the product meets quality standards under strict controls.
• Use of the ISI mark is governed by the Indian Standards Institution (Certification Marks) Act.
• Licensing information is obtainable from ISI.

Sampling and Defect Limits (Table 3, Clause 1.2)

Rounding Off Test Results (Clause 0.5)

• Test outcomes are rounded as per IS 2:1960.
• Rounding precision matches the significant figures of the standard's specified values.

Summary

• The ISI mark certifies compliance.
• Defect allowance and sample size depend on lot size.
• Consistent rounding of test data is mandatory.

flowchart LR
    A[Production] --> B{Marking Decision}
    B -->|ISI Mark| C[Quality Control]
    C --> D[Sampling & Testing]
    D --> E{Lot Size?}
    E -->|<=100| F[Sample=5; Defects=0]
    E -->|101-300| G[Sample=20; Defects=1]
    E -->|301-500| H[Sample=32; Defects=2]
    E -->|501-1000| I[Sample=50; Defects=3]
    E -->|>1000| J[Sample=80; Defects=5]
    D --> K[Round per IS 2:1960]

IS 9460 - Packaging and Sampling Protocols for Flush Drop Handles

Packaging Requirements (Clauses 9.1 & 9.2)

• Each flush drop handle must be individually wrapped in thin paper.
• Handles are to be packed within cardboard cartons.
• Each carton must display:
  • Manufacturer's name or trademark.
  • Handle size.
  • Quantity contained.

Sampling and Acceptance Criteria (Clause 1.2, Table 3)

• Sampling assures quality by restricting the number of defective handles within production lots.

Material Compliance (Clause 2.1, Table 1)

• Materials must adhere to relevant Indian Standards such as:
  • Mild steel: IS 1079 Grade 0
  • Brass sheet: IS 410 Grade CuZn 40
  • Cast brass: IS 292 Grade 3
  • Aluminium alloys: IS 737, 617, 733
  • Malleable iron: IS 2108 Grade A or B

This ensures proper packaging, traceability, and adherence to quality standards for flush drop handles.

IS 9460 - Sampling and Inspection of Flush Drop Handles

Key Requirements from Clause 1.2 and Appendix A

Sampling Scale and Acceptance Criteria (Table 3)

• Sample size depends on the quantity in the lot.
• Allowed defective count defines acceptance.

Sampling Method

• Random selection of handles from the lot.
• Sample size as per Table 3.
• Lot acceptance depends on defect count within permissible limits.

Rounding of Results

• Test values rounded following IS 2:1960.
• Decimal places retained as specified.

Sampling and Testing Workflow

flowchart TD
    A[Receive Lot] --> B{Lot Size}
    B -->|<=100| C[Sample 5 Handles]
    B -->|101-300| D[Sample 20 Handles]
    B -->|301-500| E[Sample 32 Handles]
    B -->|501-1000| F[Sample 50 Handles]
    B -->|>1000| G[Sample 80 Handles]
    C --> H[Test Samples]
    D --> H
    E --> H
    F --> H
    G --> H
    H --> I{Defects ≤ Allowed?}
    I -->|Yes| J[Accept Lot]
    I -->|No| K[Reject Lot]

Follow Table 3 for sample size and permissible defects. Round test data as per IS 2:1960.

Acceptance Criteria under IS 9460 (Appendix A)

• Sampling and Inspection: Flush drop handles are sampled based on lot size and assessed for:

  • Material quality
  • Dimensional precision
  • Manufacturing workmanship
  • Surface finish

• Definition of Defect: Any handle failing one or more criteria is classified defective.

• Acceptance Table (Table 3):

• Acceptance Rule: A lot is accepted if defective items ≤ allowed defects.

Acceptance Formula:

[ \text{Lot Accepted if } D \leq D_{max} ]

Where:

• (D) = Number of defective handles found
• (D_{max}) = Allowed defects from Table 3

This procedure assures quality by limiting defective products in production batches.

Management of Non-Ferrous Material Shortage (IS 9460 Guidelines)

Context:

• India faces significant shortages of non-ferrous metals such as copper, zinc, and their alloys.
• These materials are prioritized for export hardware due to their scarcity.
• Indigenous manufacturing is encouraged to minimize use of non-ferrous metals.

Material Specifications and Recommendations

• Recommendations favor ferrous and aluminum materials over non-ferrous for domestic use.

Sampling and Quality Control (Clause 1.2, Table 3)

Dimensional Standards (Clause 5.1, Table 2)

| Size (mm) | A (Min) | B (Min) | C1 (Min) | C2 (Min) | E2 (Min) | E1 (Min) | d (Min) | t (Min) | Screw Holes | Screw Size (IS 6760-1972) |

IS 9460 - Sampling Scale for Flush Drop Handles

Sampling and Acceptance Table (Table 3)

Summary of Relevant Clauses:

• Clause 1.2 (A-1.2): Sample size varies with lot size.
• Clause 10.1: Sampling methodology and acceptance criteria are detailed in Appendix A.
• Appendix A dictates rounding off test outcomes as per IS 2-1960.

Procedure:

• Randomly select flush drop handles based on lot size.
• Test the samples; accept the lot if defective count ≤ permissible number.
• Round results according to IS 2-1960 for uniformity.

flowchart TD
    A[Lot Size] --> B{Determine Sample Size}
    B -->|Up to 100| C[Sample=5, Max Defects=0]
    B -->|101-300| D[Sample=20, Max Defects=1]
    B -->|301-500| E[Sample=32, Max Defects=2]
    B -->|501-1000| F[Sample=50, Max Defects=3]
    B -->|>1000| G[Sample=80, Max Defects=5]
    C --> H[Conduct Tests]
    D --> H
    E --> H
    F --> H
    G --> H
    H --> I{Defects Within Limit?}
    I -->|Yes| J[Accept Lot]
    I -->|No| K[Reject Lot]

IS 9460 - Testing and Sampling Requirements

Sampling Table (Clause 1.2 and A-3.1)

Guidelines:

• Sample size is dictated strictly by lot size.
• A lot is deemed acceptable if defective handles found ≤ allowed number.
• Test results must be rounded per IS 2:1960, maintaining significant figures.

Summary Process:

• Select sample size according to lot quantity.
• Count defective items in the sample.
• Approve the lot if defects are within the permissible limit.
• Apply IS 2 rounding standards to test results.

flowchart TD
    A[Start: Lot Size] --> B{Lot Size Range}
    B -->|Up to 100| C[Sample Size=5]
    B -->|101-300| D[Sample Size=20]
    B -->|301-500| E[Sample Size=32]
    B -->|501-1000| F[Sample Size=50]
    B -->|>1000| G[Sample Size=80]
    C --> H[Count Defective Handles]
    D --> H
    E --> H
    F --> H
    G --> H
    H --> I{Defects ≤ Allowed?}
    I -->|Yes| J[Lot Accepted]
    I -->|No| K[Lot Rejected]

Acceptance Criteria (IS 9460 - Appendix A)

• Sampling and Evaluation: Handles are selected based on lot size and examined for compliance with:

  • Material standards
  • Dimensional accuracy
  • Manufacturing quality
  • Surface finish

• Defective Item Definition: Any handle not meeting one or more criteria is defective.

Acceptance Table (Scale of Sampling)

Acceptance Rule:

• A lot is accepted if defective count ≤ permitted number.

Process Flow:

flowchart TD
    A[Identify Lot Size] --> B[Determine Sample Size]
    B --> C[Test Selected Handles]
    C --> D{Defective Count ≤ Allowed?}
    D -- Yes --> E[Lot Accepted]
    D -- No --> F[Lot Rejected]