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852 Big Sewickley Creek Road
Sewickley, PA, 15143
United States

724-266-3003

Baden Steelbar & Bolt Corporation is a family-owned manufacturer and distributor of fasteners based in Pittsburgh, Pennsylvania.  We provide both stocked and custom anchor bolts, anchor bolt assemblies, threaded rod, bolts, bent bolts, nuts, washers, turnbuckles, clevises and more.  CNC maching, welding, threading.

ASTM A449

A449 is a ASTM International specification for hex cap screws, bolts and studs. A449 covers quenched and tempered steel hex cap screws, bolts and studs intended for general engineering use in sizes 1/" to 3" inclusive.

ASTM A449

A449 is a ASTM International specification for hex cap screws, bolts and studs.

 

A449 covers quenched and tempered steel hex cap screws, bolts and studs intended for general engineering use in sizes 1/4" to 3" inclusive.


A449 TYPES

 

A354 Type 1:

Plain carbon steel, carbon boron steel, alloy steel or alloy boron steel.

 

NOTE: There are other types of A449. The one listed here is the one we receive the most requests for. For information on other types, please contact one of our salesmen.


A449 MECHANICAL PROPERTIES

Size Tensile, ksi, min Yield, ksi, min Elong. % min RA min
1/4" - 1" 120 92 14 35
1-1/8" - 1-1/2" 105 81 14 35
1-5/8" - 3" 90 58 14 35

A449 TYPE 1 CHEMICAL PROPERTIES

Element Carbon Steel Carbon Boron Steel Alloy Steel Alloy Boron Steel
Carbon 0.30% - 0.52% 0.30% - 0.52% 0.30% - 0.52% 0.30% - 0.52%
Manganese, min 0.60% 0.60% 0.60% 0.60%
Phosphorus, max 0.040% 0.040% 0.035% 0.035%
Sulfur, max 0.05% 0.05% 0.04% 0.04%
Silicon 0.15 - 0.30% 0.10 - 0.30% 0.15 - 0.35% 0.15 - 0.35%
Boron 0.0005 - 0.003% 0.0005 - 0.003%

Note: Steel, as defined by the American Iron and Steel Institute, shall be considered to be alloy when the max range given for the content of alloying elements exceeds one of more of the following limits:

Manganese 1.65%

Silicon 0.6%

Copper 0.6%

Or in which a definite range or minimum quantity of any of the following elements is specified or required within the limits of the recognized field of constructional alloy steels.

Nickel

Titanium

Tungsten

Vanadium

Zirconium

Aluminum

Chromium (up to 3.99%)

Cobalt

Columbium

Molybdenum

Or any other alloying elements added to obtain a desired alloying effect.


A449 RECOMMENDED HARDWARE

Type Finish Nut Washer
Type Specification
Type 1 plain 1-4" - 1-1/2" hex A563 Grade B F436
1-5/8" - 3" heavy hex A563 Grade A F436
zinc plated 1-4" - 3" heavy hex A563 Grade DH F436
galvanized 1/4" - 3" heavy hex A563 Grade DH F436

Note: Nuts of other grades and styles having specified proof of load stresses (per ASTM A563 specification) greater than the specified grade and style of nut are suitable.