ASTM A436 Specification


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These ASTM F436 Washers are hardened steel washers for use with fasteners having nominal thread diameters of ¼ through 4 in. These washers are intended for general-purpose mechanical and structural use with bolts, nuts, studs, and other internally and externally threaded fasteners. DM Special Steel Ltd Manufactures Washers in F436 Specification and are stocked in plain, mechanical galvanized and hot-dipped galvanized condition. We can provide these fasteners with minimal Delivery Schedule. These Washer F 436 are Flat Type Washers.


Additionally, they are used with bolts per A449A354A193A320F1554 and whenever specified.



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F436 Types


Type 1
Carbon Steel
Type 3
Weathering Steel



F436 Styles


Round SAE pattern
Sizes 1/4" through 4"
Beveled Slope 2 in 12 or 9.5 degrees for use with American standard beams
Sizes 1/2" through 1-1/2"
Circular or Beveled
Sizes 1/2" through 1-1/2" beveled, 1/4" through 4" circular
Beveled F436 washers are normally not available above 1". Clipped bevel washers are only usually available as specials.



F436 Mechanical Properties


Plain Finish
Hot Dip Galvanized
Rockwell Hardness 38 to 45 HRC
Rockwell Hardness 26 to 45 HRC



F436 Chemical Requirements


Type 1
Type 3
Phosphorous, max
Sulfur, max
0.15 - 0.35%
0.45 - 0.65%
0.25 - 0.45%
0.25 - 0.45%
Weathering steel washer may also be made from any of the steels listed in Table 2 of A325.




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