ASTM F436 (Washer)

ASTM F436 Washer

ASTM F436 washers are hardened steel washers specifically designed for use in structural bolting assemblies with high-strength bolts, such as ASTM A325, ASTM F1554 grade 105 and A490. These washers are crucial for distributing the load applied by the bolt, protecting the structural surfaces, and maintaining the integrity of the connection by minimizing deformation and wear.

These washers undergo a hardening process to ensure they meet the mechanical property requirements of ASTM F436, providing excellent durability, strength, and resistance to deformation under load. They play a critical role in maintaining bolt tension and preventing loosening over time, contributing to the overall stability and safety of structural connections.

ASTM F436 Washer Dimension List - 7TMW Stock
Black Iron Hot Dipped Galvanized
Nominal Size, in. Nominal Size, mm Dia (OD), mm (tolerance) Dia (ID), mm Thickness (T), mm Min Nominal Size, in. Nominal Size, mm Dia (OD), mm Dia (ID), mm Thickness (T), mm Min
1⁄2 12 26.99 13.36 2.5 1⁄2 12 26.55 13.85 2.88
5⁄8 16 33.43 17.67 3.24 5⁄8 16 32.97 17.85 3.37
3⁄4 19 36.92 20.79 3.57 3⁄4 19 36.91 20.99 3.64
7⁄8 22 7⁄8 22
1 25 50.52 28.73 3.59 1 25 48.98 25.56 3.05
1 1⁄8 28 56.43 31.96 3.8 1 1⁄8 28
1 1⁄4 32 63.26 34.67 3.8 1 1⁄4 32
1 3⁄8 35 1 3⁄8 35
1 1⁄2 38 1 1⁄2 38
1 3⁄4 45 1 3⁄4 45
2 50 2 50
ASTM F436 Washer Dimension List
Nominal Size, in. Dia (OD), in. Dia (ID), in. Thickness (T), in. Min Thickness (T), in. Max Nominal Size, convetion in to mm Dia (OD), mm w/ Allowed Tolerance Dia (OD), mm Dia (ID), mm Thickness (T), mm Min Thickness (T), mm Max
1⁄2 1.063 0.531 0.097 0.177 12 26.19 27 13.48 2.46 4.49
5⁄8 1.313 0.688 0.122 0.177 16 32.49 33.3 17.47 3.09 4.495
3⁄4 1.468 0.813 0.122 0.177 19 36.47 37.28 20.65 3.09 4.495
20 39.59 40.4 22.0 3.1 4.6
7⁄8 1.750 0.938 0.136 0.177 22 43.64 44.45 23.82 3.45 4.495
1 2.000 1.125 0.136 0.177 25 49.20 50.8 28.57 3.45 4.495
1 1⁄8 2.250 1.250 0.136 0.177 28 55.55 57.15 31.75 3.45 4.495
30 56.5 58.1 33.0 3.4 4.6
1 1⁄4 2.500 1.375 0.136 0.177 32 61.90 63.5 34.92 3.45 4.495
1 3⁄8 2.750 1.500 0.136 0.177 35 68.25 69.85 38.1 3.45 4.49
36 68.5 70.1 39.0 3.4 4.6
1 1⁄2 3.000 1.625 0.136 0.177 38 74.60 76.2 41.27 3.45 4.49
1 3⁄4 3.375 1.875 0.178 0.28 45 84.12 85.72 47.62 4.52 7.11
2 3.750 2.125 0.178 0.28 50 93.65 95.25 53.97 4.52 7.11