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Design Stress Values (ksi) vs Temperature

(*) For Bolt Diameters ≤ 2 1/2"

Please note that the above values are for reference purposes only. Values should be extracted from ASME or BS 5500.

(**) for bolt diameters < 3/4"

Recommended working temperatures of bolt materials

All dan-loc stud bolts are quenched and tempered

ASTM A - 194 "Standard Specification for Carbon and Alloy Steel Nuts for Bolts for High-Pressure and High-Temperature Service"

The Ferritic Steel Grades L7 and L7M together with the Austenitic Grades B8 and B8M are normally stocked for immediate shipment, with the other Grades available on special order. Grade L7 is normally used to -50°F without a Charpy Test and to -150°F with a Charpy Test. Grade L7M is normally used in H2S service with a required Charpy Test at -100°F. All of the Austenitic steels listed above may be used to -325°F without a Charpy Impact Test and at lower temperatures with the requisite Impact Tests.

ASTM A - 320 "Standard Specification for Alloy-Steel and Stainless-Steel Bolting Materials for Low-Temperature Service"

DAN-LOC stocks the Ferritic steel nuts in Grades 2H, 2HM, 7, L7, and L7M which are normally used in conjunction with Grade B7, B7M, B16, L7 and L7M studs. The Austenitic steel nuts, Grade 8 and 8M are also available from stock for use on stainless steel studs and bolts. DAN-LOC stocks heavy pattern hex nuts in the grades listed above to the dimensional requirements of ANSI B18.22.1. Unless otherwise specified, these nuts are tapped UNC-2B in sizes 1" and under, and 8UN-2B over 1" diameter. All other grades of nuts listed may require special order.