Tee and Strap Hinges - Specification
2010 Edition

Scope of IS 206: Mild Steel Tee and Strap Hinges Specifications

• Defines dimensions, tolerances, and technical requirements for various tee and strap hinge types.
• Covers materials such as mild steel wire, carbon steel sheets, and wood screws referenced from IS 280, IS 1079, and IS 6760.
• Ensures standardization through detailed dimensions and acceptable limits (Tables 2-12, Figures 1 & 2).
• Final measurement values are rounded according to IS 2:1960 standards.

Sample Table: Dimensions for Heavy Duty Tee Hinges (Type 3) [Excerpt]

Notes:

• Dimensions A through R determine hinge size and hole positioning.
• Countersunk wood screws must correspond to designated hole sizes.
• Tolerances guarantee interchangeability and proper fitment.

For comprehensive hinge types and complete dimensional data, consult Tables 2 to 12 and Figures 1 & 2 of IS 206.

Key References and Tables in IS 206

1. Referenced Indian Standards (Table 2)

• IS 280:2006 — Mild steel wire for general engineering purposes.
• IS 1079:1994 — Hot-rolled carbon steel sheets and strips.
• IS 6760:1972 — Slotted countersunk head wood screws.

2. Dimension Tables for Heavy Duty Tee Hinges (Type 3) — Sample Extract

3. Dimensions for Light Duty Tee Hinges (Type 2) — Sample Extract

| Size (mm) | A (mm) | B (mm) | C (mm) | D (mm) | E (mm) | F (mm) | G (mm) | R (mm) |

Classification of Tee and Strap Hinges in IS 206

1. Tee Hinges Categories (Clause 3.1)

2. Strap Hinges Categories (Clause 3.2)

3. Material Grades (Table 1)

4. Key Dimensions for Light Weight Tee Hinges (Type 2) (Table 3)

| Size (mm) | A (±2) | B (±1) | C (±1.5) | D (±0.05) | E (±0.10) | F (±2) | G (±1) | R (±1) | Screw Size | Strap Holes | Tee Holes | Min X | Min Y | |-----------|

Material Specifications for Tee and Strap Hinges as per IS 206

Material Grades (Table 1)

• Mild steel sheets must comply with Grade 0 of IS 1079.
• Mild steel wire components should be at least 1/4 hard, meeting IS 280 requirements.

Dimension and Tolerance Examples for Light Weight Tee Hinges (Type 2) (Excerpt from Table 3)

Dimensional Specifications and Tolerances for Tee Hinges in IS 206

Clause 5.1 mandates that all dimensions and tolerances for tee and strap hinges adhere to the data presented in Tables 2 through 12 alongside Figures 1 and 2.

Sample Dimension Tables:

Heavy Duty Tee Hinges (Type 3) - Table 8

Light Duty Tee Hinges (Type 2) - Table 3

Manufacturing Guidelines per IS 206 — Core Specifications

The standard dictates precise dimensional and tolerance requirements for manufacturing tee hinges across light and medium weight categories (Types 1 & 2). Key material standards referenced include:

• IS 280: 2006 — Mild steel wire for engineering applications.
• IS 1079: 1994 — Hot rolled carbon steel sheets.
• IS 6760: 1972 — Slotted countersunk wood screws.

Sample Dimension Data for Tee Hinges (in mm)

Surface Finish Specifications and Observations in IS 206

IS 206 primarily focuses on dimensional and tolerance requirements rather than explicit surface finish details. However, inferred points include:

Highlights on Finish

• Surface finish quality should comply with dimensional tolerances outlined in Tables 2 to 12.
• Critical dimensions (A to R) are stringently controlled to ensure proper function and fit.
• Surface appearance is indirectly governed by adherence to material specifications (e.g., mild steel wire as per IS 280) and manufacturing precision.

Sample Table: Heavy Duty Tee Hinges (Type 3) Dimensions (mm)

Notes:

• Dimension F is essential for medium weight tee hinges with straight cuts.
• Dimensions R, X, Y serve as references and may be customized.
• Surface finish quality depends on material standards and manufacturing consistency.

Summary:

• Strict compliance with dimensional tolerances ensures acceptable finish.
• Use designated wood screws and hole counts for assembly integrity.
• Material standards assure mechanical and surface finish quality.

flowchart LR
    A[Material Standards: IS 280, IS 1079] --> B[Manufacturing Process]

Packaging Guidelines for Hinges as per IS 206

Packaging Quantities (Clause 8.1)

• Hinges with sizes up to 125 mm must be packed in sets of 20.
• Hinges sized 150 mm and above are packed in lots of 10 pieces.
• Purchasers may request packaging in multiples of six.

Labeling Details (Clause 8.2)

Every package should bear clear labels indicating:

• Hinge type
• Size
• Quantity
• Manufacturer's name or trademark

Sample Dimension and Screw Tables for Tee Hinges

Refer to IS 206 Tables 3 and 5 for complete size ranges and detailed dimensions.

Packaging Process Illustration

flowchart TD
    A[Manufactured Hinges] --> B[Count Hinges by Size]
    B --> C{Is Size ≤ 125 mm?}
    C -- Yes --> D[Pack 20 Hinges per 125 mm Box]
    C -- No --> E[Pack 10 Hinges per Package]
    D & E --> F[Label with Type, Size, Quantity, Manufacturer]
    F --> G[Ready for Dispatch]

Adhering to these packaging standards ensures compliance with IS 206 for storage and shipment of hinges.

Sampling and Acceptance Guidelines in IS 206 (Annex A, Clause 9)

• Lot Definition: A lot includes hinges sharing identical type, size, material, and manufacturing batch.

• Package Labeling (Clause 8.2): Each package must indicate:

  • Hinge type
  • Size
  • Quantity
  • Manufacturer or brand

• Sampling Procedure (Clause 2.2 / A-2.2):

  • Randomly select hinges from at least 10% of the packages, with a minimum of 3 packages.
  • Draw equal quantities of hinges from each selected package.

• Acceptance Criteria:

  • Test results rounded per IS 2:1960 rules.
  • Number of significant figures in test data must match specifications.

Sampling Summary Table

This ensures statistically reliable evaluation and approval of hinge lots.

flowchart TD
    A[Lot: Uniform Hinges] --> B[Select ≥10% Packages (min 3)]
    B --> C[Randomly Pick Hinges from Each Package]
    C --> D[Perform Tests and Record Results]
    D --> E[Apply IS 2:1960 Rounding]
    E --> F[Decide Conformance as per Annex A]

Marking Requirements According to IS 206

Clause 5.1 mandates dimensions and marking details for Tee Hinges (Types 1, 2, and 3) including BIS certification marks.

Summary of Marking Dimensions and Screw Specifications:

Example: Dimensions for Medium Weight Type 2, 150 mm Size

Additional Notes:

• Countersunk wood screws are specified by size (#6, #8, #12, #14).
• Number of holes varies according to hinge size and type.
• Minimum X and Y dimensions relate to mounting clearances.

This marking standard facilitates consistent manufacture and certification compliance.

Sampling and Acceptance Procedures for Tee and Strap Hinges as per IS 206

Highlights from Clause 9 and Annex A

• Lot Definition: Hinges grouped by identical type, size, material, and production batch.

• Package Labeling (Clause 8.2): Must include hinge type, size, quantity, and manufacturer or trademark.

Sampling Specifics (Clause 2.2, A-2.2)

• Random selection from at least 10% of packages, with a minimum of three packages sampled.
• Equal numbers of hinges to be drawn from each sampled package.

Acceptance Criteria

• Sampling and acceptance conform to the scale and criteria outlined in Annex A.
• Test results are rounded per IS 2:1960, retaining significant figures consistent with specification.

Sampling Size Summary

These procedures ensure representative quality control and conformity verification in accordance with IS 206.

Composition of the IS 206 Committee (Builder's Hardware Sectional Committee, CED 15)

Key Points from Annex B:

• The committee includes delegates from various organizations such as:

  • Allied Anodisers, Kolkata
  • Builders Association of India, Jamshedpur
  • Central Building Research Institute, Roorkee
  • Central Public Works Department, New Delhi
  • Construction Industries Development Council, New Delhi
  • Delhi Development Authority, New Delhi
  • Godrej & Boyce Manufacturing Co Ltd, Mumbai
  • Hindalco Industries Limited
  • Indian Aluminium Company Limited
  • Indian Institute of Architects
  • Ministry of Railways
  • National Test House, Kolkata
  • National Thermal Power Corporation Limited
  • BIS Directorate General (Ex-officio)
  • Others, with SHRI B. MAJUMDAR as Chairman and SHRI J. ROY CHOWDHURY as Member Secretary.

• Each entity has nominated primary and alternate representatives.

Sampling and Acceptance Table (Table 13)

• A lot is deemed acceptable if defects found do not exceed the permissible count.

Dimensions of Heavy Weight Tee Hinges (Type 3) - Table 8 (mm)