Hex Head Bolts

Products tagged with Hex Head Bolts

Grade 8.8 DIN 933 / DIN 931 High Tensile Black Oxide Hex Head Bolts

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

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
ASTM BSW UNC Hex Head Bolts, DIN 933 / DIN 931 Imperial Thread Fasteners

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
HDG Carbon Steel Hex Head Bolts Grade 4.8 8.8 ASTM A193 B7

HDG Carbon Steel Hex Head Bolts Grade 4.8 8.8 ASTM A193 B7

These HDG carbon steel hex head bolts are designed for industrial fastening, construction hardware, machinery assembly, and bulk bolt-and-nut supply. The product supports grades 4.8, 6.8, 8.8, 10.9, and 12.9, with M8-M36 sizes, 20-200mm lengths, UNC thread type, and hot dip galvanized surface treatment.

Grade:4.8 / 6.8 / 8.8 / 10.9 / 12.9
Material:Carbon Steel
Standard:DIN, ASME, GB, JIS, ISO
Quality Assurance

ISO 9001 Certified HDG Fastener Manufacturing

Advanced hot-dip galvanizing lines and cold-forging facilities ensuring superior corrosion resistance and dimensional precision.

Automated Production Lines

Automated Production Lines

High-capacity cold forging and thread rolling units operating 24/7.

ISO 9001:2015 Certified

ISO 9001:2015 Certified

Strict adherence to international quality management system standards.

Advanced Metrology Lab

Advanced Metrology Lab

Comprehensive testing for dimensions, tensile strength, and hardness.

Global Logistics Hub

Global Logistics Hub

Digital inventory tracking ensuring 99% order accuracy and timely dispatch.

Global Clients

Trusted by HDG Fastener Buyers Worldwide

International buyers rely on our hot dip galvanized fasteners for critical infrastructure and industrial projects.

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.

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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