B8M and 316 SS All Thread Rod
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B8M and 316 SS All Thread Rod

316 Stainless Steel all thread rod is manufactured from 316 stainless steel and tested to meet ASTM A193 and A320 Grade B8M, where specified below. ASTM A193 & A320 Grade B8M all thread rod is manufactured from carbide solution treated AISI 316 stainless steel , tested to meet the stringent chemical and mechanical requirements for use in high temperature and high pressure service. Dimensional specifications are governed by ASME B18.31.3. A193/A320 B8M all thread rod having diameters above 1" are most common 8UN (8 threads per inch). 316 stainless steel all thread rod is for general use in harsh atmospheric conditions and some corrosive environments. Grade B8M stainless steel all thread rod is for use in pressure vessels, valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications. Material is domestic where specified.

Governing Standards

ASTM A193 (1) Covers alloy and stainless steel bolting materials and bolting components for pressure vessels, valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications.
ASME B18.31.3 Covers the general and dimensional data for inch series threaded rods.
ASME B1.1 UNC & UNF Class 2A Specifies the thread form, series, class, allowance, tolerance, and designation for unified screw threads.
  1. 1. Only applies to B8M as specified in the "Grade" column below.
ASTM A320 (1) Covers alloy steel bolting materials and bolting components for pressure vessels, valves, flanges, and fittings for low-temperature service.
ASME B18.31.3 Covers the general and dimensional data for inch series threaded rods.
ASME B1.1 UNC & UNF Class 2A Specifies the thread form, series, class, allowance, tolerance, and designation for unified screw threads.
  1. 1. Only applies to B8M as specified in the "Grade" column below.

Mechanical PropertiesGrade B8M Stainless Steel

AISI 316 Stainless Steel, Carbide Solution Treated Per ASTM A193/A193M-16 (1)
Grade Material Tensile
Strength
Yield Strength,
0.2% offset
Elongation
in 4D
Reduction
of Area
Hardness
Min ksi Min ksi Min % Min % Max
B8M 316 Stainless Steel 75 30 30 50 223 HBW or 96 HRB (2)
  1. 1. Only applies to B8M as specified in the "Grade" column below.
  2. 2. For sizes 3⁄4 in. in diameter and smaller, a maximum hardness of 241 HBW (100 HRB) is permitted.
AISI 316 Stainless Steel, Carbide Solution Treated Per ASTM A320/A320M-15a (1)
Grade Material Tensile
Strength
Yield Strength,
0.2% offset
Elongation in
2 in. or 50 mm
Reduction
of Area
Hardness
Min ksi Min ksi Min % Min % Max
B8M 316 Stainless Steel 75 30 30 50 223 HBW or 96 HRB (2)
  1. 1. Only applies to B8M as specified in the "Grade" column below.
  2. 2. For sizes 3⁄4 in. in diameter and smaller, a maximum hardness of 241 HBW (100 HRB) is permitted.

Chemical PropertiesGrade B8M Stainless Steel

Per ASTM A193/A193M-16 (1)
Grade Material Carbon Manganese Phosphorus Sulfur Silicon Chromium Nickel Molybdenum
% by weight % by weight % by weight % by weight % by weight % by weight % by weight % by weight
B8M 316 Stainless Steel 0.08 max 2.00 max 0.045 max 0.030 max 1.00 max 16.0-18.0 10.0-14.0 2.00-3.00
  1. 1. Only applies to B8M as specified in the "Grade" column below.
Per ASTM 320/A320M-15a (1)
Grade Material Carbon Manganese Phosphorus Sulfur Silicon Chromium Nickel Molybdenum
% by weight % by weight % by weight % by weight % by weight % by weight % by weight % by weight
B8M 316 Stainless Steel 0.08 max 2.00 max 0.045 max 0.030 max 1.00 max 16.0-18.0 10.0-14.0 2.00-3.00
  1. 1. Only applies to B8M as specified in the "Grade" column below.
B8M and 316 SS All Thread Rod
View
Diameter Thread Pitch Length Grade Origin Item # Availability Price Quantity UOM
1/4 20 12 FT 316 Stainless Steel Unrestricted Origin R3160250000-I 5-7 Working Days $0.79906/FT FT
5/16 18 12 FT 316 Stainless Steel Unrestricted Origin R3160310000-I In Stock $1.54971/FT FT
3/8 16 12 FT 316 Stainless Steel Unrestricted Origin R3160370000-I In Stock $1.80931/FT FT
1/2 13 12 FT Grade B8M Domestic R316050B8M-U In Stock $3.9741/FT FT
1/2 13 12 FT 316 Stainless Steel Unrestricted Origin R3160500000-I In Stock $3.10367/FT FT
5/8 11 12 FT 316 Stainless Steel Unrestricted Origin R3160620000-I In Stock $4.70498/FT FT
5/8 11 12 FT Grade B8M Domestic R316062B8M-U In Stock $6.78893/FT FT
3/4 10 12 FT Grade B8M Domestic R316075B8M-U In Stock $10.61694/FT FT
3/4 10 12 FT 316 Stainless Steel Unrestricted Origin R3160750000-I 5-7 Working Days $6.68625/FT FT
7/8 9 12 FT Grade B8M Domestic R316087B8M-U In Stock $12.4659/FT FT
1 8 12 FT Grade B8M Domestic R316100B8M-U In Stock $19.42092/FT FT
1 1/8 8 12 FT Grade B8M Domestic R316112B8M-U In Stock $21.08642/FT FT
1 1/4 8 12 FT Grade B8M Domestic R316125B8M-U In Stock $30.30855/FT FT
1 1/2 8 12 FT Grade B8M Domestic R316150B8M-U In Stock $48.82848/FT FT