
ASTM A325 8.8 Grade HDG Heavy Hex Head Bolt M20X100 Hex Head bolts
Product Description
Heavy bolts have a head it is larger than a standard (finish) hex head. Standard heavy hex bolts are made by middle carbon steel. The large head offers a greater bearing surface that distributes the clamping load over a greater area.
This Specification covers two types of quenched and tempered steel heavy hex structural bolts having a minimum tensile strength of 120ksi for size 1.0in and less and 105 ksi for size over 1.0 to 1-1/2 in inclusive.
The bolts are intended for use in structural connections. these connections are covered under the requirements of the specification for structural joints using ASTM A32 OR A490 Bolts,approved by the research Council on Structural connections. Endorsed by the Amercican Institute of steel Construction and by the industrial Fasteners Institure.
Element | Carbon Steel | Boron Steel |
---|---|---|
C | 0.30 - 0.52% | 0.30 - 0.52% |
Mn min | 0.60% | 0.60% |
P, max | 0.040% | 0.040% |
S, max | 0.050% | 0.050% |
Si | 0.15-0.30% | 0.10 - 0.30% |
B | 0.0005 - 0.003% |
A325 Mechanical Properties
Bolt Dia,in | TensileStrength ksi (MPa) | Yield Strength ksi MPa) | Elongation %, min | Reduction of area %, min |
---|---|---|---|---|
1⁄2 to 1 | 120.000 (825) | 92.000 | 14 | 35 |
Over 1 to 11⁄2 | 105.000 (725) | 81.000 | 14 | 35 |
A325 Recommended Hardware
Nuts | Washers | |
---|---|---|
Type 1 | Type 1 | |
Plain | Galvanized | |
A563C, C3, D, DH, DH3 | A563DH | F436-1 |
Notes: Nuts conforming to A194 Grade 2H are a suitable substitute for use with A325 heavy hex structural bolts. The ASTM A563 Nut Compatibility Chart has a complete list of specifications. |
Advantages
1.Professional Manufacturer: Our factory professional supply A325 AND A490 Bolt, 100% satisfy Products Mechanical Properties
2.Quality is guaranteed:Can test goods by third party test company,We also can provide MTC, 3.1certificate.
3.Cost effective: Competitive prices with professional factory supply A325 AND A325M, Perfect fastening solution with 10 years experiences.
4. Haina Fastener Can produce them from 1/2-1-1/2, Can make your logo or size on the head.
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Jiaxing Haina Fastener Co.,Limited
Jiaxing Haina Fastener co. Ltd was established in 2010, located in the hometown of fasteners jiaxing city. For many years of export experience, our products has been best-selling in Europe, the United States, the Middle East and Southeast Asia. The products are manufactured by more functions machine, which is brought in domestic and foreign well-known enterprises. The products made are fully compatible with the international standards, well received by domestic and foreign customers. Through scientific management, Jiaxing Haina fastener Ltd company has been obtained ISO9000 certificate of Quality Managerment System, SGS and BV international certificate system of Make in China.
Product standards including DIN, ISO, GB and ASME/ANSI, BS, JIS AS. Main levels of carbon steel: 4.8, 4.8, 6.8, 8.8, 10.9, and 12.9 grade, the main material of stainless steel SS201, SS304, SS316 and various kinds of special stainless steel.
The width range of our products can be divided into auto fasteners, mechanical fasteners, construction fasteners, power fasteners, railway fasteners, household electrical appliances fasteners and chemical fasteners,
We have first-class service team, so we can meet the different requests for a set of customers. We solemnly commitment, first-grade quality, timely delivery guaranteed
Reasonable price and service paramount, forward to the operation principle of quality first and customer first, pursuit of excellence to create first-class brand, our aim is brand promoting development, management promoting earnings, warmly greeting home and abroad new and old customers to communicate and cooperate to seek greater success and brilliant future.
Jiaxing Haina Fastener Co.,Limited was established in 2010,
locatedin the hometown of fasteners jiaxing city. For many years
ofexport experience, our products has been best-selling in
Europe,the United States, the Middle East and Southeast
Asia.Theproducts are manufactured by more functions machine, which
isbrought in domestic and foreign well-known
enterprises.Theproducts made are fully compatible with the
internationalstandards, well received by domestic and foreign
customers.
The width range of our products can be divided into auto
fasteners,mechanical fasteners, construction fasteners, power
fasteners, railwayfasteners, household electrical appliances
fasteners and chemicalfasteners,Product standards including DIN,
ISO, GB and ASMEIANSI,BS, JIS AS. Main levels of carbon steel:
4.8,4.8,6.8,8.8,10.9, and12.9 grade, the main material of stainless
steel SS201,SS304,SS316and various kinds of special stainless
steel.
We have first-class service team, so we can meet the different
requests for a set of customers.We solemnlycommitment, first-grade
quality, timely delivery guaranteed Reasonable price and service
paramount,fonward tothe operation principle of quality first and
customer first, pursuit of excellence to create first-class brand.