Specification for rising butt hinges

IS 9106: Scope & Key Specifications Summary

• Scope: Specifies dimensions, tolerances, and quality for rising butt hinges (steel & cast iron) used in doors/windows.

Key Tables for Dimensions (Clause 4.1)

• Note: Hinges are handed; specify left or right hand when ordering.

Sampling & Quality (Clause A-2.1)

• Hinges failing dimensional or finish criteria are defective.

Additional Notes

• Final test values rounded per IS 2-1960.
• Standard aligns with international practices.
• Part of a series of Indian Standards on builder's hardware.

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IS 9106: Rising Butt Hinges - Types, Dimensions & Specifications

Types (Clause 2.1)

Material Grades (Clause 3.1)

Dimensions & Tolerances (Clause 4.1 & 4.2)

Table 2: Steel Rising Butt Hinges (mm)

Table 3: Cast Iron Rising Butt Hinges (mm)

IS 9106: Materials for Rising Butt Hinges

Key Material Specifications (Clause 3.1, Table 1)

• *IS:1079 - Hot rolled carbon steel sheet and strip
• +IS:4030 - Cold rolled carbon steel strip
• ₺IS:210 - Grey iron castings
• §IS:319 - Free cutting brass bars, rods, sections
• {IS:280 - Mild steel wire for engineering purposes

Dimensions & Tolerances (Clause 4.1, Tables 2 & 3)

IS 9106: Dimensions and Tolerances for Rising Butt Hinges

1. Dimensions (All in mm)

2. Tolerances on Dimensions (mm)

IS 9106: Key Construction Specifications for Rising Butt Hinges

1. Dimensions of Steel Rising Butt Hinges (Table 2)

• Hinges are handed; specify left or right hand when ordering.

2. Dimensions of Cast Iron Rising Butt Hinges (Table 3)

3. Tolerances on Dimensions (Table 5)

IS 9106: Workmanship and Finish - Key Points

1. Position of Holes (Clause 5.4.3)

• Holes in flaps with >2 screws must be in a zig-zag pattern, equidistant.
• Minimum clear distances from flap ends:

• Definitions:
  • X: Distance from end hole to flap end parallel to pin
  • Y: Distance from end hole to flap end perpendicular to pin
  • Z: Distance from hole nearest knuckle edge to knuckle slot edge (zig-zag holes)

2. Sampling & Permissible Defects (Clause 4.1)

3. Material Specifications (Clause 3.1)

Summary Diagram: Hole Positioning

graph LR
A[Flap End] -->|X (parallel to pin)| B(Hole)
A -->|Y (perpendicular to pin)| C(Hole)
B -->|Z (knuckle edge distance)| D(Knuckle Slot Edge)

This ensures proper durability, fit, and quality control per IS 9106.

IS 9106 - Marking Specifications for Hinges

• Clause 7.1: Each hinge must be legibly and indelibly marked with:

  • Manufacturer's name or
  • Trade-mark (if any).

• Clause 7.1.1: Hinges may also bear the ISI Certification Mark, indicating compliance with IS standards under ISI supervision.

• ISI Mark Usage:

  • Governed by Indian Standards Institution (Certification Marks) Act.
  • Ensures production under strict inspection, testing, and quality control.
  • ISI continuously monitors conformity.

Summary Table for Marking Requirements

Additional Notes:

• Marking ensures traceability and quality assurance.
• ISI Mark is a quality assurance symbol, not mandatory but recommended.

flowchart TD
    A[Hinge] --> B[Mark Manufacturer Name / Trade-mark]
    B --> C{Use ISI Mark?}
    C -->|Yes| D[Apply ISI Certification Mark]
    C -->|No| E[No ISI Mark]
    D & E --> F[Finished Product]

This ensures hinges are identifiable and conform to IS standards.

IS 9106: Packaging Specifications & Sampling for Hinges

Packaging (Clause 8)

• Hinges are packed in cardboard boxes or approved packing.
• Standard pack size: 10 hinges per package.
• Alternate pack size: Multiples of 6 if purchaser requires.
• Each package must bear:
  • Type of hinges
  • Size of hinges
  • Quantity
  • Manufacturer/trade-mark

Sampling & Criterion for Conformity (Clause 4.1 & A-4)

• A lot passes if defective hinges ≤ permissible number.
• Hinges failing dimensional, manufacturing, or finish checks are defective.

Summary Diagram

flowchart TD
    A[Hinges Manufactured] --> B[Packaging]
    B --> C{Pack Size?}
    C -->|10 Hinges| D[Standard Pack]
    C -->|Multiples of 6| E[Alternate Pack]
    D & E --> F[Label Package]
    F --> G[Sampling]
    G --> H{Check Defects}
    H -->|Within Limits| I[Accept Lot]
    H -->|Exceeds Limits| J[Reject Lot]

This ensures proper packaging, traceability, and quality control per IS 9106.

IS 9106: Sampling and Criterion for Conformity of Rising Butt Hinges

Key Points from Appendix A (Clause 9.1 & 4.1)

• Lot Size & Sample Size: Sampling depends on lot size as per Table A-2:

• Criterion for Conformity:
  • If the number of defective hinges in the sample is less than or equal to the permissible number, the lot is accepted.
  • If it exceeds, the lot is rejected.

Packaging Requirements (Clause 8.2)

Each package must clearly state:

• Type of hinges
• Size of hinges
• Quantity
• Manufacturer/trade mark

Summary Diagram:

flowchart TD
    A[Lot Size] --> B{Select Sample Size}
    B -->|Up to 150| C[Sample 5 Hinges]
    B -->|151-300| D[Sample 20 Hinges]
    B -->|301-500| E[Sample 32 Hinges]
    B -->|501-1000| F[Sample 50 Hinges]
    B -->|>1000| G[Sample 80 Hinges]

    C --> H{Defects ≤ 0?}
    D --> I{Defects ≤ 1?}
    E --> J{Defects ≤ 2?}
    F --> K{Defects ≤ 3?}
    G --> L{Defects ≤ 5?}

    H -->|Yes| M[Accept Lot]
    H -->|No| N[Reject Lot]
    I -->|Yes| M
    I -->|No| N
    J -->|Yes| M
    J -->|No| N
    K -->|Yes| M
    K -->|

IS 9106: Lot Definition, Sampling & Permissible Defects

Lot Definition (Clause 1.1 & A-1.1)

• A lot = all rising butt hinges of the same type, size, and manufactured at the same time.

Lot Size & Sample Size (Clause 4.1 & A-2)

Sampling Criterion (Clause 2.1 & Table 6)

• Sample size depends on lot size as above.
• Acceptance based on the permissible number of defective hinges.

Packaging Marking (Clause 8.2)

Each package must show:

• Type of hinges
• Size of hinges
• Quantity
• Manufacturer’s name or trademark

flowchart TD
    A[Lot: Hinges same type, size, time] --> B[Determine Lot Size]
    B --> C{Lot Size Range}
    C -->|<=150| D[Sample 5, Accept 0 defects]
    C -->|151-300| E[Sample 20, Accept 1 defect]
    C -->|301-500| F[Sample 32, Accept 2 defects]
    C -->|501-1000| G[Sample 50, Accept 3 defects]
    C -->|>1000| H[Sample 80, Accept 5 defects]
    D & E & F & G & H --> I[Check Defects Against Permissible Limit]
    I --> J[Accept or Reject Lot]

This ensures quality control by statistically sampling hinges from each lot.

IS 9106: Lot Size and Sample Size for Rising Butt Hinges

Lot Definition (Clause 1.1)

• A lot = all hinges of the same type & size manufactured simultaneously.

Lot Size & Sample Size (Clause 4.1, Table A-2)

Sampling Criteria (Clauses A-2.1 & A-2.2)

• Sample size depends on lot size per Table A-2.
• Hinges must be selected randomly from at least 10% of packages, with a minimum of 3 packages.
• Equal number of hinges should be taken from each selected package.

This ensures quality control by limiting defective hinges in a lot based on lot size.