Audited Supplier
We supply high quality of ESPARRAGOS STUD BOLT A193 Grade B7 w/2 NUTS A194 2H,A193 B7 Stud bolt and A194 2H nuts ASME B18.2.1, B18.2.3.6M and B18.2.3.7M dimension standards.
ASTM A193 B7 stud bolt with two ASTM A194 2H nuts HOT DIP GALVANIZED
ASTM A193 B7 stud bolts are manufactured from a chromium-molybdenum steel and are quenched and tempered (heat treated) to acheive the desired mechanical properties (strength).Alloy steel, AISI 4140/4142 quenched and tempered.
ASTM A193 B7 bolts are built to the requirements of numerous specifications and material design properties. To be more specific, ASTM A193 B7 alloy steel is a high temperature grade of A-193. B7 steel is also 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 A193 B7 stud bolts are ideal for industrial and structural bolting application with high-temperature or high-pressure service environment. A193 B7 stud bolts is one of the most common materials for B16.5 flange bolting.
| ASTM A193/A193M | Standard specification for alloy-steel and stainless steel bolting for high temperature or high pressure service and other special purpose applications. |
| ASME B16.5 | Covers recommended stud bolt quantity, diameter, and length for use in flanged pipe fittings. |
| ASME B1.1 Class 2A | Specifies the thread form, series, class, allowance, tolerance, and desig nation for unified screw threads. UNC for 1″ diameter and smaller. UN8 (8 threads per inch) for 1-1/8″ diameter and larger. |
FULLY THREADED STUD BOLT
TYPE OF THREAD:UNC, 8 TPI
TYPE, NUT:HEAVY HEXOGONAL
DESIGN SPEC, NUT:ASME / ANSI B18.2.2 HEX NUTS
DESIGN SPEC, STUD BOLT: ASME / ANSI B18.2.1 STUD BOLT
DESIGN SPEC, THREAD: ANSI B1.1
THREAD CLASS SYMBOL, NUT:2B
THREAD CLASS SYMBOL, STUD BOLT:2A
Material:ASTM A193 Grade B7 stud bolt
ASTM A193 B7 Stud Bolt Chemical Composition %
| C | Mn | Si | P | S | Cr | Mo |
|---|---|---|---|---|---|---|
| 0.37-0.49 | 0.65-1.10 | 0.15-0.35 | 0.035 | 0.04 | 0.75-1.20 | 0.15-0.25 |
A193 B7 Stud Bolt Mechanical Properties
| Diameter | Tensile Strength | Yield Strength | Elongation | Reduction | Hardness |
|---|---|---|---|---|---|
| M64 or Below | 860 Mpa | 720 Mpa | 16 | 50 | 321 HB |
| M64 to M100 | 795 Mpa | 655 Mpa | 16 | 50 | 321 HB |
| M100 to M180 | 690 Mpa | 515 Mpa | 18 | 50 | 321 HB |
A194 2H Hex Nut Chemical Components %
| C | Mn | Ph | S | Si |
|---|---|---|---|---|
| 0.40 min | 1 | 0.04 | 0.05 | 0.4 |
A194 2H Hex Nut Mechanical Properties
| Size | TemperingTempFahrenheit | Proof LoadStress, ksi | Hardness |
|---|---|---|---|
| 1/4-1 1/2 | 850 | 175 | 248-327 |
| 1 1/2-4 | 850 | 175 | 212-327 |
. Strength Grades
| DIN 931/933 | Grade 4.6, 4.8, 5.6, 5.8, 8.8, 10.9, 12.9 |
| DIN 931/933 | SUS 304, 316 |
| ASTM A307 | Grade A & B |
| ASTM A320, A320M | Grade L7, L7M, B8, B8M |
| ASTM A325, A325M | Grade 8.8 |
| ASTM A490, A490M | Grade 10.9 |
| ASTM A193/A193M | Grade B7, B7M, B8, B8M, B16 |
ASTM A193 This specification covers alloy steel and stainless steel bolting material for pressure vessels, valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications
| ASTM A193 B7 | Alloy steel AISI 4140/4142 quenched and tempered |
|---|
. Surface Treatments
We can provide the ASTM A193 B7 stud bolt with 2 ASTM A194 2H nuts,with following different surface treatments
- Plating
- Zinc (White / Yellow / Black)
- Cadmium (White / Yellow / Black)
- Zinc Nickel
- ZINC PLATED/BICHROMATE TREATED
- Galvanising
- Hot-Dipped Galvanise
- Mechanical Galvanise
- Fluorocarbon Coating
Xylan® / Dupont Coating Systems:- Xylar 2
- Xylan 1070
- Xylan 1424
- Customised Coating Systems
- Zinc + Fluorocarbon / PTFE coated stud bolt
- Cadmium + Fluorocarbon /PTFE coated stud bolt
- Zinc Nickel + Fluorocarbon /PTFE coated stud bolt
- Zinc Plating + Xylan 1424 Blue PTFE coated stud bolt
- Xylar 2 + Xylan 1070 coated stud bolt
- stud bolt ZINC PLATED/BICHROMATE TREATED
- Zinc Yellow Bichromated
Recommended Nuts,Bolts & Washer
| Bolt Grade | Nuts | Washers |
|---|---|---|
| B7 | A194 Grade 2H | F436 |
| B8 Class 1 | A194 Grade 8 | SS304 |
| B8M Class 1 | A194 Grade 8M | SS316 |
| B8 Class 2 | A194 Grade 8 | SS304 |
| B8M Class 2 | A194 Grade 8M | SS316 |
Uses
A193 B7 stud Bolt and A194 2H nuts for pressure vessels, valves, flanges and fittings for high temperature or high pressure services, or other special purpose applications.
| DESCRIPTION | MATERIAL | DIMENSION | RANGE | ||
|---|---|---|---|---|---|
| Inch | Metric | ||||
| BOLT | STUD BOLT | A193,A320, A437,4449,4453,ISO 898-1 | A193,A307,A540, A564 | 1/4″ ~ 6″ | M6-M160 |
| HEX BOLT | A193,A320,A437,A449,4453,ISO 898-1 | ASME B18.2.1 / ANSI B18.2.3.5M | 1/4″ ~ 6″ | M5-M160 | |
COATING
| DESCRIPTION | SPECIFICATION | MATERIAL |
|---|---|---|
| HOT-DIP GALVANIZED | ASTM 123, ASTM A153, ISO 10684,ASTM F2329 | IRON AND STEEL PRODUCT IRON AND STEEL HARDWARE FASTENERS |
| ELECTRO-DEPSITER | ASTM B633 , ASTM B766 ISO 2081, ASTM B841 | ZINK, CADMIUM , ZN+NI |
| NON-ELECTRONICALLY ZINK FLAKE | ISO 10683 | ZINK |
| ZINK PHOSPHATE | ASTM F1137, ISO 11408 | ZN / MN |
| PTFE (Poly Tetra Fluoro Ethyene) | XYLAN 1070, 1052, 1014, 1424 XYLAR 2, SERMAGARD 1105/1280 | XYLAN |
DUPLEX ALLOY
| MATERIAL | MATERIAL | ASTM |
|---|---|---|
| ALLOY 2205 - DUPLEX 2205 | S31803, S32205 | A182, A76, A479 |
| ALLOY 2507-25Cr | S32750, S32760 | A182, A76, A479 |
TITAIUM
| MATERIAL | UNS | ASTM |
|---|---|---|
| TITAIUM Gr. 2/5/7 | R50400, R56400, R52400 | B348, B265 |
6%-MOLY
| MATERIAL | UNS | ASTM |
|---|---|---|
| ALLOY 2205 - DUPLEX 2205 | N08925, N08926 , N08367 | ASTM B649, A182, A276, A479, B688 |
| ALLOY 2507-25Cr | S31254 | A182, A276 , A479 |
NICKEL ALLOYS
| MATERIAL | UNS | ASTM |
|---|---|---|
| ASTM A453 Gr 660 Class A/B/C/D | S66286 | ASTM B649, A182, A276, A479, B688 |
| HASTELLOY C276 | N10276 | B574 , B622 |
| INCOLOY A286 / 800 / 800H / 825 / 925 | S66286, No8800, N08810, N08825, NO9925 | A453 , B407, B408, B564, B423, B425 , B805 |
| MONEL 400 / 5500 | N04400, N05500 | B164 , B865 |
| INCONEL 625/ 718/ 750 | N006625, N07718, N07750 | B446, B564 A1014 , B637 |
STUD BOLT, 2.1/2 IN DIA X 470MM LONG,
FULLY THREADED, C/W 2 HEAVY HEXAGON NUTS,
MATL STUDBOLTS ASTM A193 GRADE B7: NUTS ASTM A194 GRADE 2H,
BOTH ITEMS TO BE ZINC PLATED/BICHROMATE TREATED,
8UN THREADS TO ANSI B1.1 & TOLERANCES TO B1.1 CL 2A FOR STUDBOLTS & ANSI B18.2.2 CL 2B FOR NUTS.
ASTM F2329 Hot Dip Galvanized treatment is a very common requirement for A193 B7 Stud bolts and A194 2H hex nuts.
ASTM F2329 / F2329M - 15, Standard Specification for Zinc Coating, Hot-Dip, Requirements for Application to Carbon and Alloy Steel Bolts, Screws, Washers, Nuts, and Special Threaded Fasteners.
How to order our ASTM A193 B7 stud bolts?
Example#1,
Stud Bolt 1-1/4 Inch Dia X 290mm Lg ASTM A193 B7 with 3 pcs Hex Nuts ASTM A194 GR 2H Hot Dipped Galvanized as per ASTM F2329
Example#2,
A193 B7 STUD BOLT, 3/4 Inch, 90 mm Length,with 2 pcs Hex Nuts ASTM A194 GR 2H XYLAN 1070 BLUE COATED
