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IS 7458:1984 is the Indian Standard (BIS) for structural rivets (12 to 36 mm diameter). This standard specifies the material, dimensions, tolerances, and mechanical property requirements for steel rivets with nominal diameters from 12 mm to 36 mm. It is intended for hot-driven rivets used in structural steel fabrication, such as in bridges, buildings, and cranes.
Specifies requirements for structural rivets of 12 to 36 mm diameter for structural purposes.
Standard Specification for Steel Structural Rivets
Specifies grades, dimensions, and testing for steel rivets for structural fabrication.
DIN 124:1967-08Deutsches Institut für Normung, Germany
HighWithdrawn
Rundniete für den Stahlbau (Round head rivets for steel structures)
Covers dimensions and technical delivery conditions for hot-driven round head structural rivets.
BS 153-1:1958British Standards Institution (BSI), UK
MediumWithdrawn
Specification for Steel Girder Bridges - Part 1: Materials, Workmanship, Protection Against Atmospheric Corrosion
Specifies materials, including rivet steel, for the fabrication of steel bridges.
JIS B 1213:1999Japanese Industrial Standards Committee, Japan
MediumWithdrawn
Hot-driven rivets
Specifies requirements for hot-driven rivets, covering dimensions and materials for general use.
Key Differences
≠IS 7458 specifies two grades of rivet steel (Grade 1 and Grade 2) by reference to IS 2062. In contrast, ASTM A502 defined three distinct grades (Grade 1, 2, 3) with specific chemical composition limits within the standard itself.
≠The nominal diameter range in IS 7458 is 12 mm to 36 mm. The primary US equivalent, ASTM A502, covered a similar but imperial-based range of 1/2 inch to 1 1/2 inches (approx. 12.7 mm to 38.1 mm).
≠IS 7458 specifies dimensional tolerances for shank diameter as purely positive (e.g., +0.6/-0.0 mm for sizes up to 24mm), whereas ASTM A502 allowed for both positive and negative tolerances (e.g., +0.030/-0.010 inches).
≠While head geometries are similar, there are minor proportional differences. For instance, the head height and diameter for a given shank size can vary slightly between IS 7458, DIN 124, and ASTM A502.
Key Similarities
≈All standards (IS 7458, ASTM A502, DIN 124) are intended for rivets used in structural steel connections, such as in bridges, buildings, and other fabricated structures.
≈The fundamental manufacturing process covered is hot-forging, and the intended installation method is hot-driving, where the rivet is heated and its second head is formed on-site.
≈Basic head shapes like Snap (Button/Round) Head, Pan Head, and Countersunk Head are common across the standards, serving the same functional purposes.
≈All standards mandate stringent quality control tests on the rivet bar and finished rivets, including tensile tests, elongation tests, and ductility tests like the cold bend and head flattening test.
≈The material philosophy is consistent: specifying a low-to-medium carbon steel that is ductile enough for forming but has sufficient shear strength for structural loads.
Parameter Comparison
Parameter
IS Value
International
Source
Tensile Strength (Grade 1 equivalent)
410 MPa (min, for Grade 1)
379 - 469 MPa (55-68 ksi, for Grade 1)
ASTM A502
Tensile Strength (Grade 2 equivalent)
490 MPa (min, for Grade 2)
469 - 565 MPa (68-82 ksi, for Grade 2)
ASTM A502
Elongation (Grade 1 equivalent)
23% minimum
27% minimum (for Grade 1)
ASTM A502
Standard Diameter Range
12 mm to 36 mm
10 mm to 36 mm
DIN 124
Head Type Nomenclature
Snap Head
Button Head (or Round Head in DIN 124)
ASTM A502
Head Height (20mm Snap/Round Head)
14.0 mm
13.0 mm
DIN 124
Shank Diameter Tolerance (for ~20mm dia)
+0.6 mm, -0.0 mm
+0.76 mm, -0.25 mm (for 3/4 inch rivet)
ASTM A502
Cold Bend Test Requirement
Bend 180° flat upon itself without fracture.
Bend cold 180° flat on itself without cracking on the outside of the bent portion.
ASTM A502
⚠ Verify details from original standards before use
Key Values4
Quick Reference Values
Nominal diameter range12 mm to 36 mm
Minimum tensile strength410 N/mm²
Minimum elongation on gauge length 5.65√S₀23 percent
Tolerance on nominal diameter (for d ≤ 24mm)+0.7 mm, -0.0 mm
Tables & Referenced Sections
Key Tables
Table 1 - Chemical Composition of Rivet Bars
Table 2 - Mechanical Properties of Rivet Bars and Manufactured Rivets
What grade of steel should be used for these rivets?+
The steel used for rivet bars must conform to Grade A of IS 2062 or IS 226 (now withdrawn), as specified in Clause 4.1.
What is the required tensile strength for a manufactured rivet?+
The tensile strength must be between 410 and 500 N/mm² (MPa), as per Table 2.
Does this standard apply to bolts?+
No, this standard is exclusively for structural rivets. Bolts are covered by other standards like IS 1363, IS 1364, and IS 3757 for HSFG bolts.
What is the shear test requirement?+
The manufactured rivet must not show any sign of fracture and the shear strength should be at least 0.8 times the actual tensile strength of the rivet (Clause 6.4).