ASME B18.31.3-2009 pdf free download.Threaded Rods (Inch Series).
11w ends shall be of sufficient workmanship to allow for easy assembly with an appropriate mating nut.
When requrtd. .Iraghtnes-. limits arid the inspection technique to be used to evaluate straightness shall be agreed upon between the purchaser and th supplier.
2.6 Materials and Mechanical Requirements
There are four primary designations for threaded rod materiak. Other materials may be specified by the purchaser.
2.6.1 SteeL Unless otherwise specified, S4eel shall designate low carbon steel meeting the minimum requirements of ASTM A 307, Grade A.
2.6.2 A36. Materials shall meet the requirements of ASTM F 1554, Grade 36.
2.6.3 B?. 87 shall designate the material and mechanical properties of ASTM A 193/A 193M, Grade 87.
2.6.4 CR ES. Unless otherwise specified, CRFS shall designate corrosion resistant steel of either 18-8 (302. 303. or 304) or 316 as designated by the purchaser. Rods designated as 18-8 shall meet the tensile and yield strength requirements of Alloy Group I, condition CW per ASTM F 593. Rods designated as 316 shall meet the tensile and yield strength rvquin.invntsof Alloy Group 2. condition CW per ASTM F 593.
2.6.5 Nonferrous Mateilals. Nonferrous materials shall coniorm to ASTM 1 4o$,
The purchaser ha1l designate the required finish. Unless otherwise specified, plain finish steel rods shall be coated with a light oil to protect ii from corrosion during transportation and storage.
Electroplated rods shall be finished in accordance with
ASTM F 1941.
CRES rods shall be cleaned and descaled in accordance with ASTM A 380.
Threaded rods shall be visualk withesit magnification. free from burrs, seams, laps. loose scales, irregular surfaces, and any defects affecting their serviceability. When control at surface discantinuities is required. the purchaser shall specify conformance to AS’TM F 788/ F 788M.
2.9.1 Threaded rods shall be designated by data in the folLowing sequential order:
(a) product name
(8) designation of standard
(c) nominal sire (fractional ordecimal equivalent) and threads per inch
Id) thread class, if other than specified in para. 2.2. arid LH for left-hand thread, if applicable
(e) product length (specified in feet and inches)
(f) material, including specification where necessary
(g) finish (material, standard, and thickness when applicable)
2.9.2 See the following examples:
(a) threaded rod per ASME B18.31.3, .4-l3 x 10, low carbon steel. Fe/Zn 3A per ASTM F 141
(8) threaded rod per ASME 1318,31.3, ‘t-18 X 6, ASTM A 193, Grade 117, plain finish
(c) threaded rod per ASME H18.31.3,34r16 X 6.CRES, 18-8SS
2.10 Grade Symbol and Manufacturer’s Marking
Unless otherwise specified by the purchaser, threaded rods shall be exempt from the marking requirements ot the associated material spccifkation. Packaging and label requiremenI as mandated in applicable material specifications are not exempt.