ASTM A354

• Standard Specification for Quenched and Tempered Alloy Steel Bolts, and Other Externally Threaded Fasteners.

  Two levels of bolting strength are covered in ASTM A354; Grade BC and Grade BD. Grade BD is the higher strength of the two and will be the only Grade addressed here.

• A354 Mechanical Properties

  Grade	Diameter	Tensile Ksi, Min	Yield Ksi, Min	Elongation %, Min	RA %, Min
  BD	1/4" to 2-1/2"	150	130	14	40
  BD	2-5/8" to 4"	140	115	14	40

• A354 BD Chemical Properties

  Element	Diameter: 1/4" to 1-1/2"	Diameter: Over 1-1/2"
  Carbon	0.30% to 0.53%	0.30% to 0.53%
  Phosphorus, Max	0.035%	0.035%
  Sulfur, Max	0.04%	0.05%

• A354 BD Recommended Hardware

  Finish	Nut	Washer
  Plain	A563DH Heavy Hex Plain	F436 Plain
  Hot Dip Galvanized	A563DH Heavy Hex HDG	F436 HDG

• The provided information was taken directly form the listed ASTM Standard, Additional information can be found in ASTM A354-11.

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