ASTM A320 L7 A193 B7 Dual Certified Heavy Hex Bolts
Standard: ASME/ANSI B18.2.1, ASME/ANSI B18.2.3.7M Various types of head are also available
Inch Size: 1/2”-2.3/4” with various lengths
Metric Size: 1/2-M72 with various lengths
Grade: ASTM A320 L7, ASTM A193 B7
Finish: Black Oxide, Zinc Plated, Zinc Nickel Plated, PTFE etc.
Packing: Bulk about 25 kgs each carton, 36 cartons each pallet
Advantage: High Quality and Strict Quality Control, Competitive Price,Timely Delivery; Technical Support, Supply Test Reports
Please feel free to contact us for more details.
ASTM A320
Scope Originally approved in 1948, the ASTM A320 specification covers alloy steel and stainless steel bolting materials for low temperature service. This standard covers rolled, forged, or strain hardened bars, bolts, screws, studs, and stud bolts used for pressure vessels, valves, flanges, and fittings. Like the ASTM A193 specification, unless otherwise specified, the 8UN thread series is specified on fastener larger than 1” in diameter. Below is a basic summary of a few of the common grades within the ASTM A320 specification. A number of other less common grades of ASTM A320 exist, but not covered in the description below.| L7 Alloy steel | AISI 4140/4142 Quenched and tempered |
| L43 Alloy steel | AISI 4340 Quenched and tempered |
| B8 Class 1 Stainless steel | AISI 304, carbide solution treated |
| B8M Class 1 Stainless steel | AISI 316, carbide solution treated |
| B8 Class 2 Stainless steel | AISI 304, carbide solution treated, strain hardened |
| B8M Class 2 Stainless steel | AISI 316, carbide solution treated, strain hardened |
| Grade | Size | Tensile, ksi, min | Yield, ksi, min |
Charpy Impact 20-ft-lbf @ temp |
Elong, %, min | RA, %, min |
| L7 | Up to 21/2 | 125 | 105 | -150° F | 16 | 50 |
| L43 | Up to 4 | 125 | 105 | -150° F | 16 | 50 |
|
B8 Class 1 |
All | 75 | 30 | N/A | 30 | 50 |
|
B8M Class 1 |
All | 75 | 30 | N/A | 30 | 50 |
|
B8 Class 2 |
Up to 3/4 | 125 | 100 | N/A | 12 | 35 |
| 7/8 - 1 | 115 | 80 | N/A | 15 | 35 | |
| 11/8 - 11/4 | 105 | 65 | N/A | 20 | 35 | |
| 13/8 - 11/2 | 100 | 50 | N/A | 28 | 45 | |
|
B8M Class 2 |
Up to 3/4 | 110 | 95 | N/A | 15 | 45 |
| 7/8 - 1 | 100 | 80 | N/A | 20 | 45 | |
| 11/8 - 11/4 | 95 | 65 | N/A | 25 | 45 | |
| 13/8 - 11/2 | 90 | 50 | N/A | 30 | 45 |
| Grade | Nuts | Washers |
| L7 | A194 Grade 4 or 7 | F436 |
| L43 | A194 Grade 4 or 7 | F436 |
| B8 Class 1 | A194 Grade 8 | SS304 |
| B8M Class 1 | A194 Grade 8M | SS316 |
| B8 Class 2 | A194 Grade 8, strain hardened | SS304 |
| B8M Class 2 | A194 Grade 8M, strain hardened | SS316 |
Marubeni Citizen-Cincom debut many new models at #IMTS 2014 and #PMTS 2015. One of the most impressive and Industry defining technologies was shown in the BNE51-MSY. Making its debut at #IMTS2014 and again at PMTS2015, the Miyano BNE51-MSY takes turret Lathe technologies to the next level with innovative design and Miyano new Cincom Control technology. In short, the BNE51-MSY is turret lathe with sub spindle design characteristics and control technology that enables 3 tools in the cut at one time with a two turret machine. New BNE51-MSY design and control supports many features -like Multi Axis Super Imposition by G-code- typically found only in Swiss type machines.
The machine was a home run hit with –AE, Programmers and Operators- at the show who know both Swiss and Turret lathes programming and processing. Mitsubishi Materials provided tools shown in the demo. For the video, holes produced with the MVX drill were -drilled 1st with coolant and then re-filmed in proper machine sequence running dry.
For more information on technology shown in the video contact Marubeni Citizen-Cincom Inc. representative or visit their web site at: https://www.marucit.com/
Mitsubishi Materials tooling list:
Cut-Off: GYHRUS12C00-M25R (Holder), GYHRUS12C00-M25R (Blade), GY2G0400G040N-MF/VP20RT (Insert)
OD Turning: DCLNR-124 and CNMG432MM/MC7015 insert
Indexable Drilling: MVX0875x2C100 and MVX0687x2C100
Grove Turn: GYHRUS12C00-M25R (Holder), GYM25RA-F06 (Blade), GYM0300F040N-MS/VP20RT (Insert)
OD Threading: MMTER-123 (Holder), MMT16ER120UN-S/VP15TF (Insert)
ID Threading: MMTIR103-0.75-1.5 C (ID Bar), MMT16IR160UN/VP15TF Insert
Solid Carbide Drill: MVE0397x02S060/DP1020
Face Mill Lower Turret: ASX445R0205, SEMT13T3AGSN-JM/MP7140
Face Mill Upper Turret: WSX445R0205, SNMU140812ANER-M/MP7130
Mitsubishi Brochures in .pdf format are available for download at https://www.mitsubishicarbide.com/mmus/en/product/catalog/index.html
Experience Mitsubishi Carbide’s Patented Online Catalog at https://www.mitsubishicarbide.net/mmus/en/catalogue/index.html
Secure technical inquires can be submitted to Mitsubishi Materials at https://www.mitsubishicarbide.com/mailform/mmus/en/literature/form.html
Tooling questions please contact:
Technical Support at 1-800-486-2341
or
Email MarketingServices@mmus.com
Thank you for taking the time to view this video.
https://www.mitsubishicarbide.com