What is the standard material for a holdfast?

Mild steel conforming to IS 226 (superseded by IS 2062, Grade E250A) as per Clause 3.1.

What are the standard dimensions (thickness x width) for a holdfast?

The flat section should be a minimum of 5.0 mm thick and 30 mm wide, as per Table 1.

What standard lengths are available for the part that gets embedded in the wall (shank)?

The standard shank lengths (L) are 225 mm, 300 mm, and 375 mm, according to Table 1.

Is a protective paint coating mandatory?

Yes, Clause 5.2 requires each holdfast to be coated with black tar, black paint, or an alternative approved anti-corrosive paint.

IS 7196

: 1974

Specification for hold fast

CurrentFrequently UsedSpecificationArchitectural · Builder Hardware

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This Indian Standard provides the specifications for manufacturing mild steel holdfasts. It details the material requirements, dimensions, tolerances, workmanship, and finish for both bent lug and straight lug types used to fix door and window frames into masonry walls.

Specification for hold fast

Quick Reference Values

Minimum thickness of flat section5.0 mm

Minimum width of flat section30 mm

Smallest standard shank length (L)225 mm

Largest standard shank length (L)375 mm

Standard length of bent lug (A)75 mm

Diameter of fixing holes7.0 mm

Practical Notes

The referenced material standard IS 226 is obsolete and has been replaced by IS 2062. For current procurement, specify steel conforming to IS 2062 Grade E250A.

Pay close attention to the protective coating specified in Clause 5.2 (tar, paint, etc.), especially for the portion embedded in the wall, to prevent corrosion and ensure longevity.

This standard is for traditional Z-shaped holdfasts. It does not cover modern screw-type frame fixing systems.