ASTM A574-17,Standard Specification for Alloy Steel Socket-Head Cap Screws.
ASTM A574-17 covers the requirements for quenched and tempered alloy steel hexagon socket-head cap screws, 0.060 through 4 in. in diameter where high strength is required.
Referenced Documents
F1940 Test Method for Process Control Verification to Prevent Hydrogen Embrittlement in Plated or Coated Fasteners
4. Ordering Information
4. 1 Orders for socket head cap screws under this specification shall include the following information
4.1.1 ASTM designation and year of issue
4.1.2 Name of the screw (SHCS)
4.1.3 Quantity(number of pieces by size).
4.1.4 Dimensions, including nominal thread designation.thread pitch. and nominal screw length
4.2 Orders for socket head cap screws shall include thefollowing optional requirements if specified by the purchaser:4.2.1 Inspection at point of manufacture.
4.2.2 Coating, if a protective finish other than those, whichare described in 5.5 is required, it must be specified(see 5.6)
5. Materials and Manufacture
5.1 The screws shall be fabricated from alloy steel made toa fine grain practice. In the event of controversy over grain size,referee tests on finished screws conducted in accordance with Test Methods Ell2 shall prevail.
5.2 Screws in sizes through 0.750 in. diameter, and with lengths through ten times the nominal product size or 6.0 inches, whichever is shorter, shall be cold headed, except that when specified by the purchaser the screws shall be hot headed.Larger sizes and longer lengths shall be cold or hot headed at the option of the manufacturer, unless otherwise specified bythe purchaser. Screws larger than 1.500 in. nominal diameter shall be permitted to be machined. Sockets shall be forged or machined at the option of the manufacturer.
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