Basic Info.
Application
Steel Structure Nut
Transport Package
25kgs/Box, Bulk in Pallet
Specification
1/2"~4" (Size)
Product Description
High Strength Black Oxide ASTM A194 2h Hex Heavy Structural Nuts STYLE | ANSI ASME ASTM Heavy Hex Nuts Hex Heavy Structural Nuts |
STANDARD | ASTM A194 2H |
SUPPLIER | QBH |
SHOP | qbfastener.en.made-in-china.com |
SIZE | 1/2"~4" |
CLASS(Carbon steel) | 2,2H,2HM,4,7,7M |
Coating(Carbon steel) | black, zinc, HDG, Heat treatment, Dacromet, GEOMET , Customized |
MATERIAL | Carbon steel |
PACKING | bulk/ boxes in cartons, bulk in polybags/ buckets, etc. |
PALLET | solid wood pallet, plywood pallet, ton box/bag, etc. |
Product DescriptionChoose these nuts for their good corrosion resistance and adherence to Strict-military Standards
for material and construction. ASTM A194-2HM A194-2H A194-4 A194-7 A194-7M Heavy Hex Nuts with Carbon and Alloy Steel
Teflon Black/Zinc/H.D.G 1/2~4inch.
QBH company will according Standard Specification for Carbon and Alloy Steel Nuts for Bolts for
High Pressure or High Temperature Service, or Both.
This standard is issued under the fixed designation A194/A194M; the number immediately following
the designation indicates the year of original adoption or, in the case of revision, the year of last
revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
QBH HEAVY HEX NUTS UNIT:MM |
|
SIZE | F | H | C | KG/MPCS |
1/4 | 12.4--12.7 | 5.54--6.35 | 14.12--14.66 | 5.22 |
5/16 | 13.87--14.27 | 7.11--7.98 | 15.8--16.51 | 7.8 |
3/8 | 16.99--17.47 | 8.66--9.58 | 19.38--20.17 | 14.25 |
7/16 | 18.49--19.05 | 10.24--11.2 | 21.08--22 | 18.88 |
1/2 | 21.59--22.23 | 11.79--12.8 | 24.61--25.65 | 30 |
9/16 | 23.09--23.83 | 13.36--14.43 | 26.34--27.51 | 37 |
5/8 | 26.19--26.97 | 14.91--16.03 | 29.84--31.17 | 54 |
3/4 | 30.78--31.75 | 18.03--19.25 | 35.1--36.65 | 88 |
7/8--9 | 35.41--36.53 | 21.16--22.48 | 40.36--42.16 | 135 |
1--8 | 40.01--41.28 | 24.28--25.7 | 45.61--47.65 | 193 |
1-1/8-7 | 46.02-44.6 | 28.93-27.4 | 53.16-51.49 | 269 |
1-1/4-7 | 50.8-49.22 | 31.77-30.14 | 58.64-56.83 | 348 |
1-3/8-6 | 55.57-53.82 | 35-33.27 | 64.16-62.14 | 463 |
1-1/2-6 | 60.32-58.42 | 38.22-36.39 | 69.64-67.46 | 595 |
1-5/8-5 | 65.07-63.01 | 41.45-39.52 | 75.15-72.75 | 742 |
1-7/8-5 | 74.62-72.23 | 47.9-45.77 | 86.15-83.4 | 1090 |
1-3/4-5 | 69.85-67.61 | 44.67-42.64 | 8.64-78.06 | 926 |
2-4.5 | 79.37-76.83 | 51.13-48.89 | 91.64-88.71 | 1357 |
2-1/4-4.5 | 88-86.05 | 57.17-54.73 | 102.64-99.36 | 1879 |
2-1/2-4 | 98.42-95.25 | 63.62-60.98 | 113.63-109.98 | 2555 |
2-3/4-4 | 107.95-104.44 | 70.07-67.23 | 124.63-120.59 | 3379 |
3-4 | 117.47-113.66 | 76.53-73.48 | 135.63-131.24 | 4315 |
Process Flow
Cold Forging
Annealing treatment (if need) -> wiredrawing -> clod forging -> tapping -> make heat treatment (if need)
-> Finish -> Packing
Hot Forging
Cutting material -> hot forging -> turning -> tapping -> make heat treatment(if need) -> Finish -> Packing
Product Grade
A194-2 , A194-2HM , A194-2H , A194-4 , A194-7 , A194-7M , A194-7L
A194 Grades
2 | QBH ASTM A194 Series Carbon Steel Heavy Hex Nuts |
2H | Quenched & tempered carbon steel heavy hex nuts |
2HM | Quenched & tempered carbon steel heavy hex nuts, 100% hardness tested |
4 | Quenched & tempered carbon-molybdenum heavy hex nuts (withdrawn in 2017) |
7 | Quenched & tempered alloy steel heavy hex nuts |
7M | Quenched & tempered alloy steel heavy hex nuts, 100% hardness tested |
7L | Quenched & tempered alloy steel heavy hex nuts, Charpy impact tested |
8 | Stainless AISI 304 heavy hex nuts |
8M | Stainless AISI 316 heavy hex nuts |
More DetailsQBH Materials and Chemical Compstition
1045
CHEMICAL COMPOSI % |
C | Si | Mn | P | S | Cr | Ni | Cu |
0.45 | 0.23 | 0.58 | 0.014 | 0.006 | 0.057 | 0.008 | 0.016 |
42CRMO
CHEMICAL COMPOSI % |
C | Si | Mn | P | S | Cr | Ni | Cu | Mo |
0.42 | 0.27 | 0.92 | 0.013 | 0.004 | 1.01 | 0.03 | 0.04 | 0.2 |
QBH A194 Chemical Properties
Element | 2, 2H, and 2HM | 4 | 7 and 7M (AISI 4140) | 8 (AISI 304) | 8M (AISI 316) |
Carbon | 0.40% min | 0.40 - 0.50% | 0.37 - 0.49% | 0.08% max | 0.08% max |
Manganese | 1.00% max | 0.70 - 0.90% | 0.65 - 1.10% | 2.00% max | 2.00% max |
Phosphorus, max | 0.040% | 0.035% | 0.035% | 0.045% | 0.045% |
Sulfur, max | 0.050% | 0.040% | 0.040% | 0.030% | 0.030% |
Silicon | 0.40% max | 0.15 - 0.35% | 0.15 - 0.35% | 1.00% max | 1.00% max |
Chromium | | | 0.75 - 1.20% | 18.0 - 20.0% | 16.0 - 18.0% |
Nickel | | | | 8.0 - 11.0% | 10.0 - 14.0% |
Molybdenum | | 0.20 - 0.30% | 0.15 - 0.25% | | 2.00 - 3.00% |
QBH A194 Mechanical Properties
Specification | Material | Nominal Size, In. | Tempering Temp. °F | Proof Load Stress, ksi | Hardness Rockwell | See Note |
Min | Max |
ASTM A194 Grade 2 | Medium Carbon Steel | 1/4 - 4 | 0 | 150 | 159 | 352 | 1,2,3 |
ASTM A194 Grade 2H | Medium Carbon Steel, Quenched and Tempered | 1/4 - 4 | 850 | 175 | C24 | C38 | 1,2 |
ASTM A194 Grade 2HM | Medium Carbon Steel, Quenched and Tempered | 1/4 - 4 | 1150 | 150 | 159 | 237 | 1,2,3 |
ASTM A194 Grade 4 | Medium Carbon Alloy Steel, Quenched and Tempered | 1/4 - 4 | 1100 | 175 | C24 | C38 | 1,2 |
Supplier/Brand | QBH |
Shop | https://qbfastener.en.made-in-china.com/ |
ASTM A194 Grade 7 | Medium Carbon Alloy Steel, Quenched and Tempered | 1/4 - 4 | 1100 | 175 | C24 | C38 | 1,2 |
ASTM A194 Grade 7M | Medium Carbon Alloy Steel, Quenched and Tempered | 1/4 - 4 | 1150 | 150 | 159 | 237 | 1,2,3 |
ASTM A194 Grade 8 | Stainless AISI 304 | 1/4 - 4 | - | 80 | 126 | 300 | 4 |
ASTM A194 Grade 8M | Stainless AISI 316 | 1/4 - 4 | - | 80 | 126 | 300 | 4 |
NOTES:
The markings shown for all grades of A194 nuts are for cold formed and hot forged nuts. When nuts
are machined from bar stock, the nut must additionally be marked with the letter 'B'. The letters H
and M indicate heat treated nuts.Properties shown are those of coarse and 8-pitch thread heavy hex nuts.Hardness numbers are Brinell Hardness.Nuts that are carbide-solution treated require additional letter A - 8A or 8MA.All nuts shall bear the manufacturer's identification mark. Nuts shall be legibly marked on one face
to indicate the grade and process of the manufacturer. Marking of wrench flats or bearing surfaces
is not permitted unless agreed upon between manufacturer and purchaser.Other less common grades exist, but are not listed here.Certifications & PackageOur Services
Professional Manufacturer: All of our Fastener are designed and manufactured according to buyers'
specification and performance.
Quality is guaranteed: Durability testing and critical technical design to enhance fasteners lifetime.
Cost effective: Competitive prices with professional factory supply
Perfect fastening solution with 15+ years experiences to solve your problem: Wide range of parts selection.
Customized Ideal Fasteners: customized services according to the samples and drawings offered.Free Samples for Standard Fastener from Jiaxing City Qunbang Hardware
We Promise:
1.High quality
2. Competitive price
3. The shortest delivery
4. The fastest response
5. The best service
FAQ
1.What's your experience like?
Our general manager has been engaged in the export of fasteners since 2005.
Our team can provide you with professional fasteners selling and smooth export services.
2.How about your price?
High quality products with reasonable price. Please give me a inquire, We will quoted you a price for you
refer at once.
3. How do you control your quality?
We require the quality control department to inspect every production link of each shipment. And we can provide you MTC and mill certificate when the goods is finished.
4.How about your delivery time?
General speaking, if the goods is in stock, we can delivery them with 2-5days, If the quantity is 1-2container, we can give you with 18-25days,if the quantity is more than 2 container and you are very urgent, we can let factory priority produce
your goods.
5.What is your packing?
Our packing is 20-25kg for one carton,36 or 48pcs cartons for one pallet. One pallets is about 900-960kg, We also can make customer's logo on the cartons. Or we customized cartons according to customers'
requirement.
6.What is your payment term?
We can accept T/T,LC for general order ,Paypal and Western union for small order or samples order.
Awaiting for your kind inquiry! Thanks & best regards!
For more information: http://qbfastener.en.made-in-china.com
Address:
No375, Tongle Road, Nanhu District, Jiaxing City, Zhejiang Provice, Jiaxing, Zhejiang, China
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Auto, Motorcycle Parts & Accessories, Industrial Equipment & Components, Lights & Lighting, Manufacturing & Processing Machinery, Metallurgy, Mineral & Energy, Office Supplies, Service, Sporting Goods & Recreation, Tools & Hardware, Toys
Management System Certification:
ISO 9001
Company Introduction:
Jiaxing City Qunbang Hardware Co, Ltd is a production\design\sales and after-sales as one of the fasteners business, The company is located in HangjiaHu Plain, close to Shanghai\Ningbo\Zhapu ports. The geographical position is superior, the transportation is convenient, has created the natural superiority for the export.
The company mainly produces high-strength fasteners business, bolts and nuts are the main, the main standard are DIN/ANSI\ASME/JIS/UNI/ISO/AS/BS/GB and so on. The product massively applies in the bridge\road\the petroleum pipeline facility\the wind power generation and steel structure project. Carbon steel bolts mainly have 4.8, 5.8, 6.8, 8.8, 10.9, 12.9, nuts mainly have 4, 6, 8, 10, the main material of stainless steel fastener is 201\304\316. QBH from its establishment to he present, after ten years of development, it is equipped with perfect testing equipment, and SGS and TUV have a good cooperation, each batch of products is accompanied by a 3.1 or 3.2 certificate, further escort the quality of the company.
In 2017, we registered the trademark "QBH" in the China\EU\United States, and has six fastener product patents, has obtained the Zhejiang Province science and technology small and medium-sized enterprise certificate as well as the ISO9001: 2000 cerfiticate. With the continuous development and expansion of the company, as well as customer demand for product diversification, on the basis of its original production, in order to further enhance the potential for cooperation with customers, as well as to provide competitive prices. Starting in 2015, QBH has taken part in several fastener enterprises one after another, the product variety is more abundant and the price is more advantageous, and the quality can also be well controlled. QBH has always been to provide customers with efficient and convenient service and quality products, and create a pleasant trading process for customers for the mission, deeply participate in customer construction projects and make progress together with customers, this means that we need to provide better and more cost-effictive solutions, so as to help customers stand out from the competition.
QBH promises to always provide you with excellent quality, efficient service and very competitive prices. We believe that the cooperation between us is not only based on business, but also hope that we can open new markets on the basis of win-win situation. And thank all the customers in the past to give us great support and help, make us grow up gradually, at the same time also hope that in the nere future, and you can establish new business relations.