Products
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High-Performance GB/T 70.1-2008 Socket Head Cap Screws by Handan Haosheng Fastener Co., Ltd.
GB/T 70.1-2008 Socket Head Cap Screws
In industrial applications where compact head profile, high clamping force, and limited side clearance are critical, GB/T 70.1-2008 socket head cap screws (Allen bolts) have become the preferred choice. Handan Haosheng Fastener Co., Ltd., a leading manufacturer based in Handan, China, specializes in producing high-quality GB/T 70.1-2008 socket head cap screws, offering a cylindrical head and internal hex drive for precise, high-strength fastening in machinery, molds and automation equipment.
At Handan Haosheng Fastener Co., Ltd., our socket head cap screws are engineered to match each assembly with the right size, property class and surface finish from carbon, alloy or stainless steel, with legacy GB 70-76 replacements quoted and dimensionally checked separately.
Why Choose Haosheng GB/T 70.1-2008 Socket Head Cap Screws?
Our socket head cap screws deliver several key advantages:
- ✔ Size range M1.6-M64 – coarse metric threads at product grade A, with custom lengths supplied per drawing or order specification.
- ✔ Property classes 8.8-12.9 – carbon and alloy steel in 8.8, 10.9 and 12.9, each marked and verified to its ordered class.
- ✔ Three material families – carbon steel, alloy steel and 304/316 stainless, so corrosion resistance maps to the service environment.
- ✔ Four surface finishes – black oxide, zinc, yellow zinc and zinc-nickel, with stainless parts kept in natural finish.
Haosheng’s Socket Head Cap Screw Solutions
At Handan Haosheng Fastener Co., Ltd., we offer:
- Customizable specifications for thread, length, material, property class and finish, confirmed from technical drawings or physical samples.
- Current and legacy supply – GB/T 70.1-2008 (modified adoption of ISO 4762:2004) plus legacy GB 70-76 stock quoted and checked separately.
- Strict quality control ensuring adherence to ISO 9001, ISO 14001, and ISO 45001, with carbon/alloy steel to GB/T 3098.1 and stainless to GB/T 3098.6.
Our GB/T 70.1-2008 socket head cap screws are widely used in:
- Machinery, molds and automation equipment needing high clamping force in tight cavities.
- Pumps, valves and instrumentation where a recessed, flush cylindrical head avoids collision.
- Structural steel assemblies and machine frames built with marked high-strength bolts.
- OEM supply to international fastener distributors and equipment builders.
Why Partner with Haosheng?
- ✅ 33 years of fastener manufacturing as a source factory in Yongnian, Handan.
- ✅ Full-category, full-material coverage across standards with one-stop supply.
- ✅ ISO 9001, 14001, and 45001 certified quality, environmental, and safety management.
- ✅ OEM/ODM and bulk supply with competitive pricing and stable lead times.
For industries demanding reliable, high-strength fastening in confined spaces, Handan Haosheng’s GB/T 70.1-2008 socket head cap screws deliver unmatched reliability.
Contact us today to discuss your requirements! -
High-Performance DIN 916 (K) Knurled Cup Point Set Screws by Handan Haosheng Fastener Co., Ltd.
DIN 916 (K) Knurled Cup Point Set Screws
In transmission and mechanical assemblies where precise shaft positioning, resistance to rotation, and a flush, headless profile are critical, DIN 916 (K) knurled cup point set screws (grub screws) have become the preferred choice for holding components on a shaft. Handan Haosheng Fastener Co., Ltd., a leading manufacturer based in Handan, China, specializes in producing high-quality DIN 916 (K) knurled cup point set screws, offering a headless body, internal hex drive and a serrated cup point that bites into the mating surface to improve positioning.
At Handan Haosheng Fastener Co., Ltd., our set screws are engineered to match each assembly with the right size, hardness class and knurl profile; we supply to the current ISO 4029:2026 / DIN EN ISO 4029:2026-06 route, covering the withdrawn DIN 916:1980-12 legacy designation with the edition and dimensions confirmed per drawing or sample.
Why Choose Haosheng DIN 916 (K) Set Screws?
Our knurled cup point set screws deliver several key advantages:
- ✔ Size range M1.6-M30 – steel M1.6-M30 and stainless M1.6-M24, product grade A, with M30 newly added for steel in the 2026 edition.
- ✔ Hardness class 45H – steel parts are specified by hardness class under ISO 898-5 (45H common), never by bolt tensile property classes.
- ✔ Knurled cup grip, zero tensile – serrated (K) teeth bite the shaft for rotation resistance; ISO 4029:2026 confirms set screws are not for tensile load.
- ✔ Five surface finishes – plain, black oxide, phosphate, zinc and zinc flake, with stainless parts cleaned and passivated.
Haosheng’s Set Screw Solutions
At Handan Haosheng Fastener Co., Ltd., we offer:
- Customizable specs for thread, length, socket size, knurl profile, material, hardness and finish per drawing or physical sample.
- Current-standard supply to ISO 4029:2026 / DIN EN ISO 4029:2026-06, covering legacy DIN 916 (K) replacements with the (K) tip profile confirmed.
- Strict quality control ensuring adherence to ISO 9001, ISO 14001, and ISO 45001, with inspection to product grade A dimensional requirements.
Our DIN 916 (K) knurled cup point set screws are widely used in:
- Gears, pulleys, shaft collars and couplings positioned on a shaft in transmission assemblies.
- Mechanical assemblies needing a flush, headless fastener seated inside a tapped hub.
- Vibration-prone positions where the knurl resists loosening better than a plain cup point.
- OEM supply to international fastener distributors and industrial procurement teams.
Why Partner with Haosheng?
- ✅ 33 years of fastener manufacturing as a source factory in Yongnian, Handan.
- ✅ Full-category, full-material coverage across standards with one-stop supply.
- ✅ ISO 9001, 14001, and 45001 certified quality, environmental, and safety management.
- ✅ OEM/ODM and bulk supply with competitive pricing and stable lead times.
For industries demanding reliable, flush shaft positioning, Handan Haosheng’s DIN 916 (K) knurled cup point set screws deliver unmatched reliability.
Contact us today to discuss your requirements! -
High-Performance HG/T 20634 Fully Threaded Studs by Handan Haosheng Fastener Co., Ltd.
HG/T 20634 Fully Threaded Studs
In pipeline and equipment flange connections where uniform clamping force, repeatable reassembly, and high-pressure, high-temperature reliability are critical, HG/T 20634 fully threaded studs have become the preferred choice for detachable flange joints. Handan Haosheng Fastener Co., Ltd., a leading manufacturer based in Handan, China, specializes in producing high-quality HG/T 20634 fully threaded studs, offering full-length external threads with nuts at both ends that deliver the clamping force required by flanges and gaskets.
At Handan Haosheng Fastener Co., Ltd., our HG/T 20634 studs are engineered to match each flange assembly with the right material, length, and companion nuts, helping EPC contractors and plant operators achieve leak-tight, maintainable connections.
Why Choose Haosheng HG/T 20634 Fully Threaded Studs?
Our fully threaded studs deliver several key advantages:
- ✔ Full-length threading, M14-M90 – threads run the entire shank so nuts seat at both ends; coarse P2-P3.5 and fine P3 pitches cover sizes from M14 to M90.
- ✔ Three material families – alloy steel (35CrMo, 42CrMo, 25Cr2MoV), stainless (0Cr18Ni9, 0Cr17Ni12Mo2) and ASTM special grades (A193 B8/B8M, A320 L7, A453 660).
- ✔ Drawing-based length – stud length is calculated from actual flange thickness, gasket, nuts and installation allowance, not read from a fixed table (e.g. M24×120).
- ✔ Bluing and project coatings – alloy steel gets bluing (black oxide); other anti-corrosion finishes and thread fit are defined in the technical agreement.
Haosheng’s Fully Threaded Stud Solutions
At Handan Haosheng Fastener Co., Ltd., we offer:
- Customizable specs for thread, length, material, surface treatment and companion nuts per the flange assembly drawing.
- Single-piece and stud-and-nut set supply with companion pipe-flange nuts selected to the standard or project requirements.
- Strict quality control ensuring adherence to ISO 9001, ISO 14001, and ISO 45001, with heat-number traceability and inspection documents matched to the delivered lot.
Our HG/T 20634 fully threaded studs are widely used in:
- Petrochemical plants and process piping detachable flange joints opened and reassembled during maintenance.
- Pumps, valves and equipment interfaces where reliable clamping and repeated disassembly matter.
- High- and low-temperature service lines handled by the specified heat treatment and impact test requirements.
- OEM supply to international fastener distributors, EPC contractors and industrial procurement teams.
Why Partner with Haosheng?
- ✅ 33 years of fastener manufacturing as a source factory in Yongnian, Handan.
- ✅ Full-category, full-material coverage across standards with one-stop supply.
- ✅ ISO 9001, 14001, and 45001 certified quality, environmental, and safety management.
- ✅ OEM/ODM and bulk supply with competitive pricing and stable lead times.
For industries demanding reliable, repeatable flange clamping, Handan Haosheng’s HG/T 20634 fully threaded studs deliver unmatched reliability.
Contact us today to discuss your requirements! -
High-Performance ISO 7380 Button Head Socket Screws by Handan Haosheng Fastener Co., Ltd.
In equipment and enclosure assemblies where a low exposed profile, snag-free surface, and axial tool access matter, ISO 7380 button head socket screws have become the preferred choice for neat, space-saving fastening. Handan Haosheng Fastener Co., Ltd., a leading manufacturer based in Handan, China, specializes in producing high-quality ISO 7380 button head socket screws, offering a rounded head and internal hex drive that combine a clean appearance with reliable, flush installation.
At Handan Haosheng Fastener Co., Ltd., our ISO 7380 screws are engineered to match each assembly with the right size, material, and finish, helping equipment builders achieve a tidy exterior without raising head clearance.
Why Choose Haosheng ISO 7380 Button Head Screws?
Our button head screws deliver several key advantages:
- ✔ Two button head designs – ISO 7380-1 standard and ISO 7380-2 with a collar, both 2022 editions in metric M3-M16.
- ✔ Metric sizes M3-M16 – common sizes from M3 to M12 cover enclosures, panels, and brackets with flexible lengths.
- ✔ Reduced head loadability – head load is assumed at 80% of thread load; the property class is prefixed with a zero.
- ✔ Five surface finishes – black oxide, blue zinc, yellow zinc, zinc-nickel, and zinc flake, matched to environment and thread fit.
Haosheng’s Button Head Screw Solutions
At Handan Haosheng Fastener Co., Ltd., we offer:
- Customizable specs for length, thread (fine), material (carbon, alloy, 304/316), and finish per approved drawing.
- Both part designs (ISO 7380-1 and 7380-2, fully threaded or as specified) with selected surface treatments.
- Strict quality control ensuring adherence to ISO 9001, ISO 14001, and ISO 45001, with Grade A dimensional accuracy and inspection records.
Our ISO 7380 button head screws are widely used in:
- Equipment enclosures and protective covers needing a low, neat exposed head.
- Sheet metal panels and mounting brackets with limited head clearance.
- Automation equipment and machinery assemblies built for clean, flush surfaces.
- OEM supply to international fastener distributors and industrial procurement teams.
Why Partner with Haosheng?
- ✅ 33 years of fastener manufacturing as a source factory in Yongnian, Handan.
- ✅ Full-category, full-material coverage across standards with one-stop supply.
- ✅ ISO 9001, 14001, and 45001 certified quality, environmental, and safety management.
- ✅ OEM/ODM and bulk supply with competitive pricing and stable lead times.
For industries demanding reliable, neat-profile fastening, Handan Haosheng’s ISO 7380 button head socket screws deliver unmatched reliability.
Contact us today to discuss your requirements! -
High-Performance DIN 6334 Hex Coupling Nuts by Handan Haosheng Fastener Co., Ltd.
DIN 6334 Hex Coupling Nuts
In installations where threaded rods must be extended, fixtures secured, and support structures aligned, DIN 6334 hex coupling nuts have become the preferred connector for joining two same-spec rods end to end. Handan Haosheng Fastener Co., Ltd., a leading manufacturer based in Handan, China, specializes in producing high-quality DIN 6334 hex coupling nuts, offering an elongated hexagonal body with a long internal thread and wrench-friendly hex exterior for reliable, adjustable connections.
At Handan Haosheng Fastener Co., Ltd., our DIN 6334 coupling nuts are engineered to match each assembly with the right length, material, and thread structure, helping equipment builders extend rods and stabilize fixtures without custom housings.
Why Choose Haosheng DIN 6334 Coupling Nuts?
Our coupling nuts deliver several key advantages:
- ✔ Extended 3d thread body – the elongated hex body gives long thread engagement, joining two rods end to end for extensions, fixtures, and supports.
- ✔ Metric sizes M6-M36 – common products follow a 3d length, so M12 is 36 mm and M16 is 48 mm per specification.
- ✔ Three material families – carbon (20/35/45), alloy (40Cr/35CrMo), and stainless 304/316, matched to strength and corrosion needs.
- ✔ Five finish options – plain, blue zinc, yellow zinc, zinc-nickel, and zinc-flake, selected with thread fit and environment in mind.
Haosheng’s Coupling Nut Solutions
At Handan Haosheng Fastener Co., Ltd., we offer:
- Customizable specs for length, width across flats, internal structure (through-threaded, center-stop), and end threads per drawing.
- Various configurations (fine threads, left/right-hand, different end threads) evaluated from customer drawings and purchase orders.
- Strict quality control ensuring adherence to ISO 9001, ISO 14001, and ISO 45001, with dimensions and properties confirmed by inspection per agreed PO.
Our DIN 6334 coupling nuts are widely used in:
- Threaded rod extensions and support structures in building and equipment frameworks.
- Equipment installation and fixture assemblies requiring adjustable, removable connections.
- Machinery and industrial framing where two rods must join end to end.
- OEM supply to international fastener distributors and industrial procurement teams.
Why Partner with Haosheng?
- ✅ 33 years of fastener manufacturing as a source factory in Yongnian, Handan.
- ✅ Full-category, full-material coverage across standards with one-stop supply.
- ✅ ISO 9001, 14001, and 45001 certified quality, environmental, and safety management.
- ✅ OEM/ODM and bulk supply with competitive pricing and stable lead times.
For industries demanding reliable, adjustable rod connections, Handan Haosheng’s DIN 6334 hex coupling nuts deliver unmatched reliability.
Contact us today to discuss your requirements! -
High-Performance DIN 557 Square Nuts by Handan Haosheng Fastener Co., Ltd.
DIN 557 Square Nuts
In industrial assemblies where rotation resistance, space constraints, and secure retention against bolts are critical, DIN 557 square nuts have become the preferred choice for square-hole and slot-based connections. Handan Haosheng Fastener Co., Ltd., a leading manufacturer based in Handan, China, specializes in producing high-quality DIN 557 square nuts, offering a square external profile and internal metric thread that lets the surrounding structure restrain rotation during tightening.
At Handan Haosheng Fastener Co., Ltd., our DIN 557 square nuts are engineered to match each assembly with the right material, finish, and thread specification, helping equipment builders reduce vibration loosening and assembly rework.
Why Choose Haosheng DIN 557 Square Nuts?
Our square nuts deliver several key advantages:
- ✔ Square anti-rotation design – four flat sides fit square holes and retaining slots, restraining rotation during tightening in assemblies with limited wrench access.
- ✔ Two material groups – carbon steel and stainless steel including A2 and A4 groups, selected by strength, environment, and corrosion needs.
- ✔ Made to DIN 557:2026-02 – produced as Grade C with metric M threads; Grade C covers dimensional, not mechanical, requirements.
- ✔ Five surface finishes – plain, blue zinc, yellow zinc, hot-dip galvanized, and zinc-nickel, chosen for the operating environment.
Haosheng’s Square Nut Solutions
At Handan Haosheng Fastener Co., Ltd., we offer:
- Customizable specs for width across flats, nut height, thread size, and material requirements per drawing.
- Various square nut types (DIN 557 standard, thin DIN 562, weld DIN 928, T-slot) with specified finishes.
- Strict quality control ensuring adherence to DIN 557, DIN 562, DIN 928, and applicable ISO thread standards.
Our DIN 557 square nuts are widely used in:
- Machinery and industrial equipment frames where rotation must be restrained.
- Metal brackets and structural assemblies built on square holes and nut housings.
- Retaining slots and enclosures in control cabinets and equipment panels.
- Equipment components supplied to international distributors and OEM builders.
Why Partner with Haosheng?
- ✅ 33 years of fastener manufacturing as a source factory in Yongnian, Handan.
- ✅ Full-category, full-material coverage across standards with one-stop supply.
- ✅ ISO 9001, 14001, and 45001 certified quality, environmental, and safety management.
- ✅ OEM/ODM and bulk supply with competitive pricing and stable lead times.
For industries demanding reliable, rotation-resistant fastening, Handan Haosheng’s DIN 557 square nuts deliver unmatched reliability.
Contact us today to discuss your requirements! -
High-Performance Drywall Screws (Wallboard Self-Tapping Screws) by Handan Haosheng Fastener Co., Ltd.
Drywall Screws – Wallboard Self-Tapping Screws
In drywall and partition construction where fast, consistent driving, flush seating without board damage, and secure holding on wood or metal studs are critical, drywall screws (wallboard self-tapping screws) have become the preferred fastening choice. Handan Haosheng Fastener Co., Ltd., a leading manufacturer based in Handan, China, specializes in producing high-quality drywall screws, offering superior driving performance and reliable holding in residential and commercial interior systems.
At Handan Haosheng Fastener Co., Ltd., our drywall screws are engineered to match each substrate with the right thread form and finish, helping contractors reduce rework and achieve clean, paintable surfaces.
Why Choose Haosheng Drywall Screws?
Our drywall screws deliver several key advantages:
- ✔ Three standard diameters – produced in 3.5, 3.9, and 4.2 mm with PH2 cross recess to fit common board and stud systems.
- ✔ Substrate-matched threads – coarse for wood, fine for steel as thin as 0.8 mm, and a self-drilling point for metal within a defined range.
- ✔ Bugle head seating – the 8.6 mm bugle head sits flush without tearing the board, leaving a smooth surface for joint compound.
- ✔ Three protective finishes – black or grey phosphate for dry interiors plus electro-galvanized zinc for better corrosion resistance.
Haosheng’s Drywall Screw Solutions
At Handan Haosheng Fastener Co., Ltd., we offer:
- Customizable specs for different length, diameter, thread form, point, and surface-treatment requirements.
- Various drywall screw types (coarse thread, fine thread, self-drilling, special-board) with phosphate or zinc finishes.
- Strict quality control ensuring adherence to GB/T 14210, GB/T 3098.5, EN 14566, and DIN 18182-1 standards.
Our drywall screws are widely used in:
- Gypsum board and drywall installation on both wood and metal stud partitions.
- Suspended ceiling systems fixing board to light-gauge steel channels.
- Commercial interior fit-out and renovation of offices, retail, and hospitality spaces.
- Prefabricated and modular building interior panel assembly.
Why Partner with Haosheng?
- ✅ 33 years of fastener manufacturing as a source factory in Yongnian, Handan.
- ✅ Full-category, full-material coverage across standards with one-stop supply.
- ✅ ISO 9001, 14001, and 45001 certified quality, environmental, and safety management.
- ✅ OEM/ODM and bulk supply with competitive pricing and stable lead times.
For industries demanding reliable, efficient interior fastening, Handan Haosheng’s drywall screws deliver unmatched reliability.
Contact us today to discuss your requirements! -
DIN 7643 Banjo Bolts for Hydraulic, Fuel and Lubrication Lines
Handan Haosheng Fastener Co., Ltd. specializes in high-performance DIN 7643 banjo bolts (hollow screws), offering integrated fastening and fluid transfer, compact connection design, and reliable washer sealing. Ideal for hydraulic, fuel, and lubrication lines where installation space is limited, our banjo bolts are manufactured from Q235 carbon steel to DIN 7643 dimensions, with thread sizes from M8×1 to M45×1.5 and 1, 2, 3, 4, or 6 radial hole configurations. With yellow zinc and blue-white zinc finishes, drawing-based customization, and batch-by-batch inspection, Haosheng’s banjo bolts ensure leak-resistant reliability in demanding applications.
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High-Strength ASTM A193 B7 Stud Bolts for Flanges and Pressure Equipment
Handan Haosheng Fastener Co., Ltd. specializes in high-performance ASTM A193 Grade B7 stud bolts — fully threaded studs and double-end studs, supplied with matching ASTM A194 Grade 2H nuts. Quenched and tempered from chromium-molybdenum alloy steel, our B7 bolting delivers a minimum 125 ksi (860 MPa) tensile strength and keeps its mechanical properties at service temperatures up to about 425 °C — ideal for flanges, valves and pressure equipment in oil & gas, petrochemical and power generation industries. With UNC, 8UN and metric thread options, custom cutting to length, and batch-tested material certificates, Haosheng’s B7 studs ensure reliable performance in the most demanding bolted joints.
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Teflon Plated Hex Head Bolt M10x50, Grade 8.8, Chemical & Heat Resistant
Handan Haosheng Fastener Co., Ltd. specializes in high-performance Teflon-coated (PTFE) bolts, offering superior corrosion resistance, chemical stability, and non-stick properties. Ideal for harsh environments in chemical, marine, food processing, and pharmaceutical industries, our bolts withstand extreme temperatures (-200°C to +260°C) and resist acids, alkalis, and solvents. With low friction, FDA compliance, and long-lasting durability, Haosheng’s Teflon bolts ensure reliability in demanding applications.
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J Hook For Roof Sheet
In roof installation, J-bolts are usually used to fix solar racks, antenna bases or other structures that need to be anchored.
Inquiry now admin@hsfastener.net
Name:roof j hooks
Size:M8-M72
Standard:ISO / DIN / ANSI / ASME / ASTM / BS / AS / JIS
Material :Q235 / 35K / 45K / 40Cr / B7 / 20MnTiB / A2 / A4 carbon steel & stainless steel
Grade:4.8/5.8/6.8/8.8/10.9
Surface :BZP / HDG / BLACK / DACROMET / TEFLON or customizable
Factory :YES
Samples:samples are free
MOQ :1000PCS
Packing :ctn, plt or customizable -
What is Elevator Bolt Belt Screw Bucket Bolt bucket elevator bolt
Elevator bucket bolts in accordance to DIN 15237 are hot pressed and available in M7, M8, M10, and M12, zinc plated or in stainless steel.
This product is also commonly referred to as or can be compared to: bucket fasteners or elevatorbolts.
The elevator bucket bolts are cold pressed and have a smaller head diameter. Available in M6, M7 and M8, stainless steel and mild steel.
The standard strength of the screws is 4.6. A delivery in strength 6.8 and 8.8 is possible on customer request.
Besides, both versions are available with standard nuts DIN934, locknuts DIN985 (Nyloc) or DIN980, flat or domed washers, and an Allen key head variety. Also available in larger dimensions as M14 and M16.
