Maria Santos
COMPANY::Pacific Build Solutions Inc.
Philippines The team was helpful during the quotation stage and gave us practical suggestions for our customized requirement. The products arrived in good condition and met our project needs.
Products
Explore our fastener catalog built for industrial reliability and project efficiency.
Grade 8.8 DIN 933 / DIN 931 High Tensile Black Oxide Hex Head Bolts
Hotop Fasteners supplies Grade 8.8 DIN 933 / DIN 931 Hex Head Bolts made from carbon steel for industrial fastening, machinery assembly, construction projects, steel structures, and general engineering use. This product is available in DIN 933 full thread and DIN 931 partial thread types. With a Grade 8.8 high tensile strength class, hex head design, and black oxide surface finish, it is suitable for buyers who need reliable fastening performance, stable supply, and practical cost control.
Grade:Grade 8.8
Material:Carbon Steel
Standard:DIN 933 / DIN 931
Grade 12.9 High Strength Black Zinc Plated Extended Hex Bolts DIN 931 / DIN 933
Hotop Fasteners supplies high strength DIN 931 / DIN 933 extended hex bolts for industrial machinery, structural assembly, equipment installation, construction projects, and heavy-duty fastening applications. Designed for buyers who require strong mechanical performance and reliable fastening security, these bolts feature a hexagonal head for convenient tightening with standard wrenches and sockets. The black zinc plated appearance provides a professional finish for industrial and engineering applications.
Grade:Grade 10.9 / Grade 12.9
Material:Steel / Stainless Steel
Standard:DIN 931 / DIN 933
DIN 933 / DIN 931 Black Hex Bolts
Hotop Fasteners supplies DIN 933 / DIN 931 black hex bolts and nuts for machinery, structural assembly, construction, industrial equipment, and general fastening applications. Manufactured from carbon steel materials such as 35K and 45# steel, these fasteners are available in multiple strength grades, including 4.8, 6.8, 8.8, 10.9, and 12.9. The black oxide finish gives the product a clean industrial appearance and makes it a practical choice for mechanical assembly and hardware supply.
Grade:4.8 / 6.8 / 8.8 / 10.9 / 12.9
Material:Carbon Steel
Standard:DIN 933 / DIN 931
ASTM BSW UNC Hex Head Bolts, DIN 933 / DIN 931 Imperial Thread Fasteners
Hotop Fasteners supplies ASTM, BSW, and UNC hex head bolts for machinery, construction, equipment assembly, maintenance, and industrial fastening applications. This bolt series supports imperial thread requirements as well as DIN 933 and DIN 931 configurations. Available strength grades include 4.8, 8.8, and 10.9, allowing buyers to select the appropriate fastening performance for general-purpose, industrial, or heavy-duty applications.
Grade:4.8 / 8.8 / 10.9
Material:Steel / Stainless Steel
Standard:ASTM / BSW / UNC / DIN 933 / DIN 931
Hot Dip Galvanized Hex Bolt and Nut, High Strength Steel Fasteners
Hotop Fasteners supplies hot dip galvanized hex bolts and nuts for industrial assembly, construction, equipment installation, power projects, and general mechanical fastening. This product is suitable for buyers who need dependable fastening performance, corrosion-resistant surface protection, and flexible supply options for bulk purchasing or project use.
Grade:4.8 / 8.8 / 10.9 / 12.9
Material:Carbon Steel
Standard:DIN ANSI JIS BS ISO GB,Nonstandard
Hot Dip Galvanized Transmission Tower Bolts and Nuts, High Strength Steel Tower Fasteners
Hotop Fasteners supplies hot dip galvanized hex bolts and nuts for structural fastening, construction projects, industrial equipment, power installations, and general engineering use. This product is designed for buyers who need strong fastening performance, corrosion resistance, and stable bulk supply. Multiple standard systems, material options, and strength grades are available to support different project requirements.
Grade:4.8 / 6.8 / 8.8 / 10.9 / 12.9
Material:Carbon Steel
Standard:DIN931, DIN933, ISO4014, ISO4017; DIN, ASME, GB, JIS, ISO options
DIN 933 Carbon Steel Hex Bolts Zinc Plated Black Finish
These DIN 933 carbon steel hex bolts are available in M8x30mm and M10x30mm sizes, with grade options from 4.8 to 12.9 and surface finishes including zinc plated, black, plain, and hot dip galvanized. They are suitable for machinery assembly, industrial fastening, metal structures, equipment repair, and bulk project purchasing.
Grade:4.8 / 6.8 / 8.8 / 10.9 / 12.9
Material:Carborn Steel
Standard:DIN、ASME、GB、JIS、ISO
Zinc Plated Carbon Steel Hex Head Bolts Grade 6.8 8.8 DIN
These zinc plated carbon steel hex head bolts are available in M8-M72 sizes and grade options including 6.8 and 8.8, with extended grade choices from 4.8 to 12.9 for different fastening requirements. They are suitable for industrial assembly, steel structures, machinery, construction hardware, and bulk fastener supply.
Grade:4.8 /6.8 / 8.8 / 10.9 / 12.9
Material:Carbon Steel
Standard:DIN
DIN933 DIN931 Black Oxide Carbon Steel Hex Bolts Grade 4.8 6.8
These DIN933 and DIN931 carbon steel hex bolts are available in M10x80, M12x90, M14x100, and M16x110 sizes, with grade 4.8 and 6.8 options for industrial fastening. Surface options include black finish, zinc plated, plain, and HDG for machinery, construction, steel structure, and bulk fastener supply.
Grade:4.8 / 6.8 / 8.8 / 10.9 / 12.9
Material:Carbon Steel
Standard:IN933, DIN931; DIN, ASME, GB, JIS, ISO options
Quality Assurance
ISO 9001 Certified HDG Fastener Manufacturing
Advanced hot-dip galvanizing lines and cold-forging facilities ensuring superior corrosion resistance and dimensional precision.
Global Clients
Trusted by HDG Fastener Buyers Worldwide
International buyers rely on our hot dip galvanized fasteners for critical infrastructure and industrial projects.
Rafael Oliveira
COMPANY::Oliveira Componentes Industriais Ltda.
Brazil The bulk order was consistent with the approved sample. We were satisfied with the product finishing, packaging, and the supplier's attention to our order details.
Joseph Mwangi
COMPANY::Eastline Industrial Solutions Ltd.
Kenya The quality was stable, and the delivery schedule was handled professionally. We appreciated that they provided updates without us having to follow up repeatedly.
Chinedu Okafor
COMPANY::Lagos Industrial Procurement Ltd.
Nigeria We were pleased with the sample and decided to proceed with a larger order. The products were delivered in good condition and were consistent with the specifications we confirmed.
Lim Wei Jian
COMPANY::Meridian Engineering Supplies Sdn. Bhd.
Malaysia Their communication was professional and efficient. They understood our specifications well and delivered the order according to the confirmed requirements.
Maria Santos
COMPANY::Pacific Build Solutions Inc.
Philippines The team was helpful during the quotation stage and gave us practical suggestions for our customized requirement. The products arrived in good condition and met our project needs.
Rafael Oliveira
COMPANY::Oliveira Componentes Industriais Ltda.
Brazil The bulk order was consistent with the approved sample. We were satisfied with the product finishing, packaging, and the supplier's attention to our order details.
Joseph Mwangi
COMPANY::Eastline Industrial Solutions Ltd.
Kenya The quality was stable, and the delivery schedule was handled professionally. We appreciated that they provided updates without us having to follow up repeatedly.
Chinedu Okafor
COMPANY::Lagos Industrial Procurement Ltd.
Nigeria We were pleased with the sample and decided to proceed with a larger order. The products were delivered in good condition and were consistent with the specifications we confirmed.
Lim Wei Jian
COMPANY::Meridian Engineering Supplies Sdn. Bhd.
Malaysia Their communication was professional and efficient. They understood our specifications well and delivered the order according to the confirmed requirements.
Maria Santos
COMPANY::Pacific Build Solutions Inc.
Philippines The team was helpful during the quotation stage and gave us practical suggestions for our customized requirement. The products arrived in good condition and met our project needs.
Rafael Oliveira
COMPANY::Oliveira Componentes Industriais Ltda.
Brazil The bulk order was consistent with the approved sample. We were satisfied with the product finishing, packaging, and the supplier's attention to our order details.
Joseph Mwangi
COMPANY::Eastline Industrial Solutions Ltd.
Kenya The quality was stable, and the delivery schedule was handled professionally. We appreciated that they provided updates without us having to follow up repeatedly.
Chinedu Okafor
COMPANY::Lagos Industrial Procurement Ltd.
Nigeria We were pleased with the sample and decided to proceed with a larger order. The products were delivered in good condition and were consistent with the specifications we confirmed.
Lim Wei Jian
COMPANY::Meridian Engineering Supplies Sdn. Bhd.
Malaysia Their communication was professional and efficient. They understood our specifications well and delivered the order according to the confirmed requirements.
Maria Santos
COMPANY::Pacific Build Solutions Inc.
Philippines The team was helpful during the quotation stage and gave us practical suggestions for our customized requirement. The products arrived in good condition and met our project needs.
Rafael Oliveira
COMPANY::Oliveira Componentes Industriais Ltda.
Brazil The bulk order was consistent with the approved sample. We were satisfied with the product finishing, packaging, and the supplier's attention to our order details.
Joseph Mwangi
COMPANY::Eastline Industrial Solutions Ltd.
Kenya The quality was stable, and the delivery schedule was handled professionally. We appreciated that they provided updates without us having to follow up repeatedly.
Chinedu Okafor
COMPANY::Lagos Industrial Procurement Ltd.
Nigeria We were pleased with the sample and decided to proceed with a larger order. The products were delivered in good condition and were consistent with the specifications we confirmed.
Lim Wei Jian
COMPANY::Meridian Engineering Supplies Sdn. Bhd.
Malaysia Their communication was professional and efficient. They understood our specifications well and delivered the order according to the confirmed requirements.
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HDG Knowledge Base
HDG Hot Dip Galvanizing FAQ
Technical answers about hot dip galvanized fastener specifications, standards and procurement.
Industrial fasteners are precision-engineered mechanical components — including bolts, screws, nuts, washers, anchors, and rivets — used to join or secure materials in construction, automotive, aerospace, and heavy machinery. They are manufactured to international standards such as DIN, ANSI, ISO, and JIS, and are available in carbon steel, stainless steel, alloy steel, and brass with various surface finishes.
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