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ASTM Specifications
ASTM A193
Alloy steel and stainless steel bolting materials for high temperature or high pressure service.
ASTM A194
Carbon, alloy and stainless steel nuts used in high pressure and high temperature service.
ASTM A307
Carbon steel bolts and studs ranging from ¼” to 4”.
ASTM A325
High strength heavy hex structural bolts ranging from ½” to 1½”.
ASTM A354
Quenched and tempered alloy steel bolts, studs, and other externally threaded fasteners.
ASTM A449
Bolts, threaded rod, and anchors ranging from ¼” to 3”.
ASTM A490
Quenched and tempered alloy steel, heavy hex structural bolts from ½” to 1½”. Minimum 150 ksi tensile strength.
ASTM A563
Quenched and tempered alloy steel, heavy hex structural bolts from ½” to 1½”. Minimum 150 ksi tensile strength.
ASTM F593
Stainless steel bolts, hex cap screws, and studs ranging from ¼” to 1½”
ASTM F594
Standard specification for stainless steel nuts ranging from ¼” to 1½”.
reference charts
ASME B16.5 Flange Chart
Flanges are standardized according to publications from organizations like ASME, MSS, API and others. Dimensions are determined by the pipe size and the pressure class required for the application, and range from ½” to 24”; in classes ranging from 150 to 2500.
Drill Tap Chart
Provides thread pitch and drill size for both inches and metrics in coarse and fine grades. Also provided for taper and straight pipe.
External Thread and Material Marking Chart
Identifies material by its marking, ASTM specification, size range, and mechanical problems.
Hardness Conversion Chart
Approximate equivalent hardness numbers for carbon and alloy steels.
Inch to Metric Conversion
Find “standard size” conversions from inches to fractions, decimals and millimeters here.
Internal Threading and Material Marking Chart
Indicates ASTM specification, material, size range, and minimum and maximum “Hardness Rockwell.”
Suggested Torque Value
Shows various bolt sizes with corresponding TPI, proof load (lbs.), and clamp load (lbs.) for each size. Also includes tightening torque (ft. lbs.) specs for lubricated, zinc and plain fasteners and bolts.
Thread Pitch Chart
Thread series displays various diameter/pitch combinations that are measured by the number of threads per inch (TPI), applied to a single diameter. Includes both standard screw and metric screw thread.
Washer Dimensions
Series of charts with washer size and their corresponding ID (internal dimensions), OD (outer dimensions) and thickness. Charts give the minimum, normal, and maximum, for ID, OD, and thickness.
Wrench and Socket Drive Chart
Includes both inch and metric charts that give socket size with corresponding “wrench size” in regular and heavy hex. Also displays “hex key size” in Socket Head C/S and Button/ Flat Soc C/S.
