We are a professional manufacturer of ISO 261/ISO 4033 A193 B7 Stud Bolt Full Length Threaded with A194 2H 2 Heavy Hexagonal Nuts in China
BS ISO 261
This standard BS ISO 261:1998 ISO general purpose metric screw threads.
- Metric screw threads
- This International Standard specifies ISO general purpose metric screw threads (M) having basic profile according to ISO 68-1. Basic dimensions are given in ISO 724. For tolerances see ISO 965-1.
- A193 B7, Alloy steel, which is known as AISI 4140/4142 quenched and tempered.A193 B7 stud bolt is the most common grade used for flange connections.
A-193 B7 steel is a chrome moly steel with a minimum tensile strength of 125ksi. Depending on your unique project requirement needs, grade B7 bolts can be used in numerous types of extreme conditions.
ASTM 193 Grade B7 stud Bolt Heat treatment
Heat treated chromium-molybdenum steel recommended for medium high temperature service. (Liquid quench -50° to 900° F, Air quench -40° to 900° F)
ASTM A194 Grade 2H Nuts is recommended for A193 B7 Stud bolts
Suitable for use in high temperatures and high pressure conditions. Quenched & tempered.
DIN EN ISO 4033 Hexagon Nuts
DIN EN ISO 4033 Hexagon Nuts
| d | M 5 | M 6 | M 8 | M 10 | M 12 | M 14 | M 16 | M 20 | M 24 | M 30 | M 36 |
| P (pitch) | 0,8 | 1 | 1,25 | 1,5 | 1,75 | 2 | 2 | 2,5 | 3 | 3,5 | 4 |
| e (min) | 8,79 | 11,05 | 14,38 | 17,77 | 20,03 | 23,35 | 26,75 | 32,95 | 39,55 | 50,85 | 60,79 |
| m (max) | 5,1 | 5,7 | 7,5 | 9,3 | 12 | 14,1 | 16,4 | 20,3 | 23,9 | 28,6 | 34,7 |
| s | 8 | 10 | 13 | 16 | 18 | 21 | 24 | 30 | 36 | 46 | 55 |
ASTM 193 Grade B7 stud bolt Chemical Composition
| Element | Alloy Steel |
|---|---|
| Chromium Molybdenum SteelA | |
| CompositionB, % | |
| Carbon | 0.37 – 0.49C |
| Manganese | 0.65 – 1.10 |
| Phosphorus | 0.035 max |
| Sulfur | 0.040 max |
| Silicon | 0.15 – 0.35 |
| Chromium | 0.75 – 1.20 |
| Molybdenum | 0.15 – 0.25 |
A: Typical steel compositions used for this grade include 4140, 4142, 4145, 4140H, 4142H, and 4145H.
B: The intentional addition of Bi, Se, Te, and Pb is not permitted.
C: For bar sizes over 31⁄2 in. [90 mm], inclusive, the carbon content may be 0.50 %, max.
ASTM 193 Grade B7 stud bolt Mechanical Properties
| Diameter, inch. | Tensile Strength, min, ksi | Yield Strength, min, 0.2% offset, ksi | Elongation in 4D, min, % | Reduction of Area, min, % | Hardness, max |
|---|---|---|---|---|---|
| 2-1⁄2 and under | 125 | 105 | 16 | 50 | 321 HBW or 35 HRC |
| over 2-1⁄2 to 4, inclusive | 115 | 95 | 16 | 50 | 321 HBW or 35 HRC |
| over 4 to 7, inclusive | 100 | 75 | 18 | 50 | 321 HBW or 35 HRC |
Diameter:1/4″~3 3/4″
Length:20mm~6000mm(usually 12 feet)
Grade :B7
Standard: M6-M100
Material: ASTM A193 B7M
Surface finished: PTFE Xylan Coated.
Standard: ANSI B18.1.1.
COATING/PLATING OPERATING TEMPERATURES
- Cadmium Electroplating
– High Service Temp: 608o F.
– Low Service Temp: N/A; solid below 607o F. - Zinc or Zinc-Nickel Electroplating
– High Service Temp: 788o F.
– Low Service Temp: N/A; solid below 788o F. - Hot Dip Galvanizing ASTM A153/A153M : Specification for Zinc Coating Hot Dip Galvanizing on Fasteners.
– High Service Temp 800o F.
– Low Service Temp: N/A; solid below 800
How to order our A193 B7 Stud bolt?
Stud Bolt & Nuts M33x250mm ,ISO 261/ISO 4033 ASTM A193 Grade B7/A194 Grade 2H, 2 Heavy Nuts , H.D.G, Full Length Threaded Sets 1298 Stud Bolt & Nuts M14x100mm Quantity:100 Sets