Specification for Flush Drop Handle for Drawers

IS 9460 - Scope Summary & Key Specifications

Scope (Clause 5.1)

• Applies to flush drop handles with dimensions as per Table 2 and Fig. 1.
• The shape shown is illustrative; dimensions and minimum requirements are mandatory.

Key Dimensions from Table 2 (in mm)

• Screw Size: Slotted countersunk head wood screws as per IS 6760:1972.
• Thickness (t) is recommended but not mandatory.

Sampling & Quality Control (Table 3)

Notes:

• Final test results should be rounded per IS 2:1960.
• The standard aligns with international practices.

flowchart LR
    A[Flush Drop Handle] --> B[Dimensions as per Table 2]
    B --> C[Size 75mm or 100mm]
    C --> D{Screw Holes}
    D -->|4 holes| E[Use IS 6760 screws]

IS 9460: Material Requirements for Flush Drop Handles

Key Material Specifications (Clause 2.1, Table 1)

Notes:

• Non-ferrous materials like copper and zinc alloys are retained mainly for export trade due to scarcity.
• Indigenous use of non-ferrous hardware is discouraged to conserve resources.

Sampling & Quality Control (Clause 1.2, Table 3)

Rounding Off (Clause 0.5)

• Test results should be rounded as per IS 2:1960 to the same number of significant figures as specified.

This summary ensures compliance with IS 9460 for material selection and quality control of flush drop handles.

Key Dimensions for Flush Drop Handles (IS 9460: Clause 5.1 & Table 2)

• All dimensions in millimeters (mm).
• The shape is illustrative; dimensions and minimum requirements are mandatory.
• Screw specification: Slotted countersunk head wood screws as per IS 6760-1972.

Material Specifications (Clause 2.1 & Table 1)

Summary

• Use Table 2 for dimensional compliance.
• Use specified material grades from Table 1 for manufacturing.
• Follow

IS 9460: Manufacture of Flush Drop Handles - Key Specifications

1. Material Requirements (Clause 2.1, Table 1)

Materials must comply with specified IS grades:

2. Dimensions (Clause 5.1, Table 2)

Note: Dimensions are in millimeters. Shape is illustrative; dimensions are mandatory.

3. Sampling & Quality Control (Clause 1.2, Table 3)

IS 9460 - Finish Specifications for Flush Drop Handles

1. Material Requirements (Clause 2.1, Table 1)

Materials must comply with specified Indian Standards:

2. Dimensions (Clause 5.1, Table 2)

Key dimensions (in mm) for flush drop handles:

3. Finish

• The finish must ensure durability and corrosion resistance as per manufacturing best practice.
• Final values for dimensions and finish shall be rounded off according to IS:2-1960.

flowchart LR
    A[Material Selection] --> B[Manufacture]
    B --> C[Dimension Check (Table 2

IS 9460 - Marking: Key Points & Tables

1. Marking Requirements (Clause 8.1.1)

• Handles may be marked with the ISI Certification Mark.
• ISI Mark ensures compliance with the standard under strict quality control.
• Use of ISI Mark is regulated by the Indian Standards Institution (Certification Marks) Act.
• Licensing details for ISI Mark use are available from ISI.

2. Sampling & Defect Criteria (Table 3, Clause 1.2)

3. Rounding Off Test Results (Clause 0.5)

• Test results should be rounded per IS 2:1960.
• Number of significant digits in the result = number in the specified value.

Summary

• ISI Mark on handles guarantees compliance.
• Sampling size and defect limits depend on lot size (see table).
• Test results must be rounded consistently per IS 2:1960.

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

Let me know if you need specific formulas or further details!

IS 9460 - Packaging & Sampling for Flush Drop Handles

Packaging (Clause 9.1 & 9.2)

• Each flush drop handle shall be wrapped in thin paper.
• Packed in cardboard boxes.
• Boxes must be marked with:
  • Manufacturer's name or trademark.
  • Size of the handle.
  • Quantity inside.

Sampling & Criterion for Conformity (Clause 1.2, Table 3)

• Sampling ensures quality control by limiting defective handles in lots.

Material Specifications (Clause 2.1, Table 1)

• Materials must comply with relevant IS grades, e.g.:
  • Mild steel: IS 1079 Grade 0
  • Brass sheet: IS 410 Grade CuZn 40
  • Cast brass: IS 292 Grade 3
  • Aluminium alloy sheets/die castings/extrusions: IS 737, 617, 733
  • Malleable iron: IS 2108 Grade A or B

This ensures proper packaging, traceability, and quality control for flush drop handles per IS 9460.

IS 9460: Sampling and Testing of Flush Drop Handles

Key Specifications from Clause 1.2 & Appendix A

1. Scale of Sampling and Criterion for Conformity (Table 3)

• Sample size is based on lot size.
• Permissible defective handles define acceptance criteria.

2. Sampling Method

• Handles are selected randomly from the lot.
• The number of samples follows Table 3.
• Conformity is judged by the permissible number of defective handles.

3. Rounding Off Test Results

• Final test values must be rounded per IS 2:1960.
• Retain the same decimal places as specified values.

Summary Flow for Sampling & Testing

flowchart TD
    A[Start: Lot of Handles] --> B{Lot Size?}
    B -->|Up to 100| C[Sample 5 Handles]
    B -->|101 to 300| D[Sample 20 Handles]
    B -->|301 to 500| E[Sample 32 Handles]
    B -->|501 to 1000| F[Sample 50 Handles]
    B -->|1001+| G[Sample 80 Handles]
    C --> H[Test Samples]
    D --> H
    E --> H
    F --> H
    G --> H
    H --> I{Defective Handles ≤ Permissible?}
    I -->|Yes| J[Lot Accepted]
    I -->|No| K[Lot Rejected]

Use Table 3 for sample size and acceptance criteria. Follow IS 2:1960 for rounding test results.

Criterion for Conformity — IS 9460 (Appendix A)

• Sampling & Inspection: Flush drop handles are selected per sampling scale (A-1.2) and checked for:

  • Material
  • Dimensional requirements
  • Manufacture quality
  • Finish

• Defective Handles: Any handle failing one or more criteria is defective.

• Acceptance Criterion (Table 3):

• Conformity Rule:
  A lot conforms if defective handles ≤ permissible number (col 3).

Summary Formula:

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

Where:

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

This ensures quality control by limiting defects based on lot size and sample testing.

Handling of Non-Ferrous Material Scarcity (IS 9460 Highlights)

Context:

• Acute scarcity of non-ferrous materials (copper, zinc, alloys) in India.
• Export trade items retain these materials; indigenous use discouraged to conserve resources.

Key Specifications & Recommendations

• Materials for Flush Drop Handles (Clause 2.1, Table 1):

• Recommendation: Avoid non-ferrous hardware for indigenous use; prefer mild steel or malleable iron where possible.

Sampling & Quality Control (Clause 1.2, Table 3)

Dimensional Requirements (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: Scale of Sampling for Flush Drop Handles

Key Table: Scale of Sampling and Criterion for Conformity (Table 3)

Summary of Clauses:

• Clause 1.2 (A-1.2): Sample size depends on lot size (see table above).
• Clause 10.1: Sampling method and conformity criteria are detailed in Appendix A.
• Appendix A: Specifies rounding off test results per IS 2-1960.

Usage:

• Select flush drop handles randomly based on lot size.
• Test the sample; if defective handles ≤ permissible number, lot is accepted.
• Round test values as per IS 2-1960 for consistency.

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

This ensures quality control by statistically sampling handles from production lots.

IS 9460: Number of Tests and Sampling Criteria

Key Specifications from Table 3 (Clause 1.2 & A-3.1):

Guidelines:

• Sample size depends strictly on the lot size as per Table 3.
• A lot is conforming if defective handles ≤ permissible number.
• Test results must be rounded off as per IS 2:1960, matching significant digits of the specified value.

Summary:

• Select sample size based on lot size.
• Count defective handles in sample.
• If defective ≤ permissible number, lot passes.
• Use IS 2 rounding rules for 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{Defective ≤ Permissible?}
    I -->|Yes| J[Lot Conforms]
    I -->|No| K[Lot Rejected]

This ensures quality control through statistically valid sampling and testing per IS 9460.

Criterion for Conformity (IS 9460 - Appendix A)

• Sampling & Testing: Flush drop handles are sampled from a lot based on lot size.
• Defective Handles: A handle failing material, dimensional, manufacturing, or finish requirements is defective.

Key Table: Scale of Sampling & Permissible Defects

Conformity Criterion:

• A lot conforms if the number of defective handles in the sample is ≤ permissible number from the table.

Summary:

• Select sample size based on lot size.
• Test all sampled handles for compliance.
• Reject lot if defective count exceeds permissible limit.

flowchart TD
    A[Select Lot Size] --> B[Determine Sample Size]
    B --> C[Test Sample Handles]
    C --> D{Defective Handles ≤ Permissible?}
    D -- Yes --> E[Lot Conforms]
    D -- No --> F[Lot Rejected]