CHENFENG FASTENERFactory Direct · Yongnian, China

All Products

Every product below is manufactured or sourced under our own incoming inspection, and every item can be supplied with a dimensional and hardness report. Filter by category, or search a standard number such as DIN 933, a size such as M12, or a material.

Hex Head Bolt, Full Thread — DIN 933 / ISO 4017 / GB/T 5783 / ANSI B18.2.1
Bolts

Hex Head Bolt, Full Thread

The most widely used bolt in general engineering. Fully threaded shank, cold forged head, rolled thread for higher fatigue strength. Supplied with matching DIN 934 nuts and DIN 125 washers as a set.

  • StandardDIN 933 / ISO 4017
  • Size rangeM3 - M64
  • MaterialCarbon / Alloy / Stainless
  • Surface finishZinc Plated
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Hex Head Bolt, Partial Thread — DIN 931 / ISO 4014 / GB/T 5782
Bolts

Hex Head Bolt, Partial Thread

Unthreaded shank absorbs shear load and allows the bolt to clamp over a thicker joint without losing thread engagement. Preferred for structural and machine connections.

  • StandardDIN 931 / ISO 4014
  • Size rangeM5 - M64
  • MaterialCarbon / Alloy / Stainless
  • Surface finishZinc Plated
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Socket Head Cap Screw — DIN 912 / ISO 4762 / GB/T 70.1 / ANSI B18.3
Bolts

Socket Head Cap Screw

High tensile socket screw with a machined cylindrical head, allowing a compact, recessed joint. Hex socket drives to high torque without cam-out. Ideal for tooling, dies and machinery.

  • StandardDIN 912 / ISO 4762
  • Size rangeM3 - M36
  • MaterialAlloy Steel / Stainless
  • Surface finishBlack Oxide
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Hex Flange Bolt — DIN 6921 / GB/T 5789 / IFI 111
Bolts

Hex Flange Bolt

Integrated serrated flange spreads load and resists vibration, removing the need for a separate washer. Common in automotive and appliance assembly where assembly speed matters.

  • StandardDIN 6921 / GB/T 5789
  • Size rangeM5 - M20
  • MaterialCarbon Steel / Stainless
  • Surface finishZinc Plated
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Heavy Hex Structural Bolt — ASTM A325 / A490 / GB/T 1228 / GB/T 3632
Bolts

Heavy Hex Structural Bolt

For steel-to-steel structural connections. Supplied with heavy hex nut and hardened washer per set, in tension-control (TC) or large hex configuration with torque coefficient tested.

  • StandardASTM A325 / A490
  • Size rangeM12 - M30
  • MaterialAlloy Steel 35CrMo / 40Cr
  • Surface finishHDG
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Double End Stud — DIN 938 / DIN 939 / GB/T 897 / GB/T 898
Bolts

Double End Stud

Threaded at both ends with a plain centre section, used where the joint must be dismantled frequently or where only one side is accessible. B7 / B8 grades for flange work.

  • StandardDIN 938 / DIN 939
  • Size rangeM6 - M48
  • MaterialAlloy Steel / Stainless
  • Surface finishBlack Oxide
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Cup Head Square Neck Bolt — DIN 603 / DIN 605 / GB/T 12 / GB/T 14
Bolts

Cup Head Square Neck Bolt

Round head with a square neck that locks into timber and stops rotation, so only one wrench is needed. Standard choice for wooden structures, fencing and playground equipment.

  • StandardDIN 603 / DIN 605
  • Size rangeM6 - M20
  • MaterialCarbon Steel / Stainless
  • Surface finishZinc Plated
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Countersunk Socket Screw — DIN 7991 / ISO 10642 / GB/T 70.3
Bolts

Countersunk Socket Screw

90 degree countersunk head sits flush with the surface, giving a clean finish with no protruding head. Used in tooling, machine covers and precision assemblies.

  • StandardDIN 7991 / ISO 10642
  • Size rangeM3 - M20
  • MaterialAlloy Steel / Stainless
  • Surface finishBlack Oxide
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Hex Nut — DIN 934 / ISO 4032 / GB/T 6170 / ANSI B18.2.2
Nuts

Hex Nut

Standard hexagon nut with metric coarse thread, tapped to 6H tolerance and thread-gauged batch by batch. Available as a matched set with any bolt we supply.

  • StandardDIN 934 / ISO 4032
  • Size rangeM3 - M64
  • MaterialCarbon / Alloy / Stainless
  • Surface finishZinc Plated
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Nylon Insert Lock Nut — DIN 985 / ISO 7040 / GB/T 889.1
Nuts

Nylon Insert Lock Nut

A nylon collar grips the thread and provides prevailing torque that resists vibration. Reusable several times. The default choice for machinery exposed to shock and vibration.

  • StandardDIN 985 / ISO 7040
  • Size rangeM3 - M36
  • MaterialCarbon Steel / Stainless
  • Surface finishZinc Plated
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All Metal Prevailing Torque Nut — DIN 980 / ISO 7042 / GB/T 6184
Nuts

All Metal Prevailing Torque Nut

Entirely metal construction with a deformed top thread, so it survives temperatures that would destroy a nylon insert. Used in exhaust systems, engines and high temperature plant.

  • StandardDIN 980 / ISO 7042
  • Size rangeM5 - M36
  • MaterialCarbon / Alloy Steel
  • Surface finishZinc Plated
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Hex Flange Nut — DIN 6923 / GB/T 6177 / IFI 145
Nuts

Hex Flange Nut

Serrated flange replaces a separate washer, speeds up assembly and provides a larger bearing face on thin sheet. Widely used in automotive and appliance lines.

  • StandardDIN 6923 / GB/T 6177
  • Size rangeM5 - M20
  • MaterialCarbon Steel / Stainless
  • Surface finishZinc Plated
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Heavy Hex Nut — ASTM A194 2H / A563 DH / GB/T 1229
Nuts

Heavy Hex Nut

Matched nut for A325 / A490 structural bolts, with the higher proof load and thicker section required by the standard. Supplied as a set with the bolt and hardened washer.

  • StandardASTM A194 2H / A563 DH
  • Size rangeM12 - M36
  • MaterialAlloy Steel 45# / 35CrMo
  • Surface finishHDG
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Wing Nut — DIN 315 / GB/T 62.1
Nuts

Wing Nut

Two wings allow tightening and releasing by hand without tools. Ideal for equipment that is adjusted or dismantled frequently, such as display stands and filters.

  • StandardDIN 315 / GB/T 62.1
  • Size rangeM4 - M12
  • MaterialCarbon Steel / Stainless
  • Surface finishZinc Plated
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Acorn Cap Nut — DIN 1587 / GB/T 923
Nuts

Acorn Cap Nut

Domed cap covers the exposed thread end, giving a finished appearance and protection from injury or corrosion. Common on furniture, railings and consumer products.

  • StandardDIN 1587 / GB/T 923
  • Size rangeM4 - M20
  • MaterialCarbon Steel / Stainless
  • Surface finishZinc Plated
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Weld Nut — DIN 929 / GB/T 13681
Nuts

Weld Nut

Projection welded onto sheet metal to provide a permanent threaded boss. Three or four projections give reliable welds on thin gauge steel without burn-through.

  • StandardDIN 929 / GB/T 13681
  • Size rangeM4 - M16
  • MaterialCarbon Steel / Stainless
  • Surface finishPlain
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Pan Head Self-Tapping Screw — DIN 7981 / GB/T 845 / JIS B1122
Screws & Self-Drilling

Pan Head Self-Tapping Screw

Cross recess pan head self-tapping screw with a sharp point, case hardened so it cuts its own thread in sheet steel, plastics and wood. The volume workhorse of assembly lines.

  • StandardDIN 7981 / GB/T 845
  • Size rangeST2.2 - ST8
  • MaterialCarbon Steel / Stainless
  • Surface finishZinc Plated
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Countersunk Self-Tapping Screw — DIN 7982 / GB/T 846
Screws & Self-Drilling

Countersunk Self-Tapping Screw

Countersunk head sits flush with the panel surface, used for cladding, panels and any application where a protruding head is not acceptable.

  • StandardDIN 7982 / GB/T 846
  • Size rangeST2.2 - ST8
  • MaterialCarbon Steel / Stainless
  • Surface finishZinc Plated
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Hex Washer Head Self-Tapping Screw — DIN 7976 / DIN 6928 / GB/T 847
Screws & Self-Drilling

Hex Washer Head Self-Tapping Screw

Hex washer head combines the drive and the bearing flange in one part. Driven by socket or nut runner for fast, torque-controlled assembly.

  • StandardDIN 7976 / DIN 6928
  • Size rangeST3.5 - ST8
  • MaterialCarbon / Stainless
  • Surface finishZinc Plated
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Self-Drilling Screw (Tek Screw) — DIN 7504 / GB/T 15856
Screws & Self-Drilling

Self-Drilling Screw (Tek Screw)

Drill point drills through steel up to 6 mm then forms its own thread, removing the need to pre-drill. Wings under the head enlarge the hole in timber so panels are pulled down tight.

  • StandardDIN 7504 / GB/T 15856
  • Size rangeST3.5 - ST6.3
  • MaterialCarbon Steel / Stainless
  • Surface finishZinc Plated
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Drywall Screw — GB/T 14210 / ASTM C1002
Screws & Self-Drilling

Drywall Screw

Fine or coarse thread drywall screw with a bugle head that dimples the board without tearing the paper. Coarse thread for timber studs, fine thread for metal studs.

  • StandardGB/T 14210 / ASTM C1002
  • Size range3.5 x 25 - 4.8 x 150 mm
  • MaterialCarbon Steel
  • Surface finishBlack Phosphate
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Pan Head Machine Screw — DIN 7985 / GB/T 818 / ANSI B18.6.3
Screws & Self-Drilling

Pan Head Machine Screw

Fully threaded screw for use with a nut or a tapped hole. Clean pan head, available in brass for electrical and decorative use.

  • StandardDIN 7985 / GB/T 818
  • Size rangeM2 - M10
  • MaterialCarbon Steel / Stainless / Brass
  • Surface finishZinc Plated
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Hex Head Wood Screw — DIN 571 / GB/T 102
Screws & Self-Drilling

Hex Head Wood Screw

Heavy duty wood screw with a hexagonal head for wrench driving and a coarse thread that bites deep into timber. Used for sleepers, pallets and timber construction.

  • StandardDIN 571 / GB/T 102
  • Size rangeM6 - M20
  • MaterialCarbon Steel / Stainless
  • Surface finishZinc Plated
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Chipboard Screw — DIN 7505 / DIN 7997
Screws & Self-Drilling

Chipboard Screw

Partial thread with a sharp point and a reduced shank on longer sizes, designed for particle board and MDF furniture without splitting the panel.

  • StandardDIN 7505 / DIN 7997
  • Size range3.0 x 12 - 6.0 x 120 mm
  • MaterialCarbon Steel / Stainless
  • Surface finishZinc Plated
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Flat Washer — DIN 125 / ISO 7089 / GB/T 97.1 / ANSI B18.22.1
Washers

Flat Washer

General purpose washer that spreads bolt load over a larger area and protects the clamped surface from galling. Punched from cold rolled or galvanized coil.

  • StandardDIN 125 / ISO 7089
  • Size rangeM3 - M64
  • MaterialCarbon Steel / Stainless
  • Surface finishZinc Plated
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Large Series Flat Washer — DIN 9021 / ISO 7093 / GB/T 96.1
Washers

Large Series Flat Washer

Oversized outside diameter for soft materials, slotted holes and thin sheet where a standard washer would simply dish into the joint.

  • StandardDIN 9021 / ISO 7093
  • Size rangeM4 - M36
  • MaterialCarbon Steel / Stainless
  • Surface finishZinc Plated
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Spring Lock Washer — DIN 127 / GB/T 93 / ANSI B18.21.1
Washers

Spring Lock Washer

Split helical washer that stores elastic energy and maintains tension as the joint settles, resisting loosening from vibration. Hardness tested in every batch.

  • StandardDIN 127 / GB/T 93
  • Size rangeM3 - M48
  • MaterialSpring Steel 65Mn / Stainless
  • Surface finishZinc Plated
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Toothed Lock Washer — DIN 6797 / DIN 6798 / GB/T 9074.6
Washers

Toothed Lock Washer

External or internal teeth bite into the mating surfaces to provide electrical continuity and prevent rotation. Common in earthing and electronic assemblies.

  • StandardDIN 6797 / DIN 6798
  • Size rangeM3 - M16
  • MaterialSpring Steel / Stainless
  • Surface finishZinc Plated
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Square Taper Washer — DIN 434 / DIN 435 / GB/T 852 / GB/T 853
Washers

Square Taper Washer

Tapered bore compensates for the slope of channel and I-beam flanges, giving the bolt head a square, flat bearing surface.

  • StandardDIN 434 / DIN 435
  • Size rangeM8 - M30
  • MaterialCarbon Steel
  • Surface finishHDG
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Threaded Rod DIN 975 — DIN 975 / GB/T 15389
Threaded Rods & Studs

Threaded Rod DIN 975

Fully threaded rod in 1 m, 2 m and 3 m lengths, straight, chamfered and thread-gauged. Used for hanging services, supports and cut-to-length studding.

  • StandardDIN 975 / GB/T 15389
  • Size rangeM3 - M52
  • MaterialCarbon Steel / Stainless
  • Surface finishZinc Plated
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Double End Threaded Rod DIN 976 — DIN 976 / GB/T 899 / GB/T 900
Threaded Rods & Studs

Double End Threaded Rod DIN 976

Threaded at both ends with a defined plain centre length, so two components can be clamped from opposite sides. B7 for high temperature flange service.

  • StandardDIN 976 / GB/T 899
  • Size rangeM6 - M48
  • MaterialAlloy Steel / Stainless
  • Surface finishBlack Oxide
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Stainless Steel Threaded Rod — DIN 975 / ASTM A276
Threaded Rods & Studs

Stainless Steel Threaded Rod

Corrosion resistant rod for marine, food processing and chemical environments. Passivated after threading and marked with grade and heat number for traceability.

  • StandardDIN 975 / ASTM A276
  • Size rangeM4 - M30
  • MaterialStainless Steel 304 / 316 / 316L
  • Surface finishPlain
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Trapezoidal Lead Screw — DIN 103 / GB/T 5796
Threaded Rods & Studs

Trapezoidal Lead Screw

Machine-cut trapezoidal thread used for linear motion and load transfer rather than fastening. Supplied with or without matching bronze nut, straightness checked.

  • StandardDIN 103 / GB/T 5796
  • Size rangeTr8x1.5 - Tr40x7
  • MaterialCarbon Steel 45# / Stainless
  • Surface finishBlack Oxide
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Sleeve Expansion Anchor — GB/T 22795 / DIN 18057 (custom)
Anchors & Fixings

Sleeve Expansion Anchor

Sleeve anchor body expands against the concrete as the nut is tightened, allowing the fixture to be removed and refitted. Includes nut and washer.

  • StandardGB/T 22795 / DIN 18057 (custom)
  • Size rangeM6 - M20
  • MaterialCarbon Steel / Stainless
  • Surface finishZinc Plated
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Wedge Anchor / Stud Anchor — GB/T 22795 / ASTM (custom)
Anchors & Fixings

Wedge Anchor / Stud Anchor

Clip at the bottom end bites into the concrete wall as the stud is drawn in. High pull-out capacity for static loads in cracked and non-cracked concrete.

  • StandardGB/T 22795 / ASTM (custom)
  • Size rangeM6 - M24
  • MaterialCarbon Steel / Stainless
  • Surface finishZinc Plated
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Internal Expansion Bolt — GB/T 22795
Anchors & Fixings

Internal Expansion Bolt

Expansion cone draws into the sleeve internally, so only a shallow hole depth is needed and the anchor sits flush. Popular for curtain wall and bracket fixing.

  • StandardGB/T 22795
  • Size rangeM6 - M16
  • MaterialCarbon Steel / Stainless
  • Surface finishZinc Plated
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Chemical Anchor Stud — GB/T 22795 / ETA (custom)
Anchors & Fixings

Chemical Anchor Stud

Threaded stud bonded into the drilled hole with epoxy or vinyl ester resin. Works in cracked concrete and close to free edges where mechanical anchors cannot be used.

  • StandardGB/T 22795 / ETA (custom)
  • Size rangeM8 - M24
  • MaterialCarbon Steel / Stainless
  • Surface finishZinc Plated
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Plastic Wall Plug — DIN 18552 (custom)
Anchors & Fixings

Plastic Wall Plug

Nylon or polypropylene plug that expands in masonry and lightweight block. Supplied with or without screw, in white, grey or colour to match the market.

  • StandardDIN 18552 (custom)
  • Size range5 - 12 mm
  • MaterialPP / PA6 / Nylon
  • Surface finishNatural
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U-Bolt with Nuts — DIN 3570 / DIN 3571 / GB/T 5976
Building Hardware

U-Bolt with Nuts

Bent from round bar with rolled threads and two nuts supplied, in standard or long leg form. Used to clamp pipes, tubes and round sections to supports.

  • StandardDIN 3570 / DIN 3571
  • Size rangeM6 - M24
  • MaterialCarbon Steel / Stainless
  • Surface finishZinc Plated
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Pipe Clamp / Hose Clamp — DIN 3017 / GB/T 5789 (custom)
Building Hardware

Pipe Clamp / Hose Clamp

Worm drive or bolt type clamp for hose, duct and pipe connections, with a galvanized or stainless band and a slotted screw housing that will not strip.

  • StandardDIN 3017 / GB/T 5789 (custom)
  • Size range1/2" - 12" or 20 - 300 mm
  • MaterialCarbon Steel / Stainless 301/304
  • Surface finishZinc Plated
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Embedded Plate with Welded Studs — Custom / GB 50017
Building Hardware

Embedded Plate with Welded Studs

Steel plate with welded threaded studs or anchors, cast into concrete to provide a fixing point for later steelwork. Welds inspected and dimensionally reported.

  • StandardCustom / GB 50017
  • Size range100x100 - 600x600 mm
  • MaterialCarbon Steel Q235 / Q345
  • Surface finishHDG
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Solar Mounting Hardware — Custom / AS/NZS 1170
Building Hardware

Solar Mounting Hardware

Rail clamps, mid clamps, hook bolts, base plates and L-feet for rooftop and ground mount PV systems, hot dip galvanized for 25 year outdoor exposure.

  • StandardCustom / AS/NZS 1170
  • Size rangeM8 - M16
  • MaterialCarbon Steel / Aluminium / Stainless
  • Surface finishHDG
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Precast Lifting Socket — Custom / EN 17180
Building Hardware

Precast Lifting Socket

Cast into precast concrete elements to provide a certified lifting point for transport and erection. Proof load tested and marked with the WLL.

  • StandardCustom / EN 17180
  • Size rangeM12 - M36
  • MaterialCarbon Steel / Stainless
  • Surface finishHDG
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Bow / D Shackle — US Fed. Spec. RR-C-271 / EN 13889
Rigging Hardware

Bow / D Shackle

Drop forged shackle with a screw pin or safety bolt, marked with its working load limit and proof load tested batch by batch. For lifting, towing and mooring.

  • StandardUS Fed. Spec. RR-C-271 / EN 13889
  • Size range5 - 50 mm
  • MaterialCarbon Steel / Stainless 304/316
  • Surface finishHDG
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Turnbuckle — US Fed. Spec. FF-T-791 / EN 13411-1
Rigging Hardware

Turnbuckle

Body with left and right hand threads so the assembly can be shortened or lengthened under tension. Used for guy wires, bracing and structural tensioning.

  • StandardUS Fed. Spec. FF-T-791 / EN 13411-1
  • Size rangeM6 - M36
  • MaterialCarbon Steel / Stainless
  • Surface finishHDG
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Wire Rope Clip — EN 13411-5 / US Fed. Spec. FF-C-450
Rigging Hardware

Wire Rope Clip

U-bolt and saddle combination that forms a loop termination on wire rope. Malleable iron or steel, with the correct number of clips per termination specified.

  • StandardEN 13411-5 / US Fed. Spec. FF-C-450
  • Size range3 - 32 mm
  • MaterialMalleable Iron / Carbon Steel / Stainless
  • Surface finishHDG
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Eye Bolt & Ring Nut — DIN 580 / DIN 582 / GB/T 825
Rigging Hardware

Eye Bolt & Ring Nut

Forged or bent ring on a threaded shank, providing a permanent lifting or anchorage point. Rotating ring nuts allow the eye to align with the load direction.

  • StandardDIN 580 / DIN 582
  • Size rangeM6 - M36
  • MaterialAlloy Steel / Carbon Steel / Stainless
  • Surface finishHDG
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Forged Lifting Hook — DIN 1480 / EN 1677
Rigging Hardware

Forged Lifting Hook

Forged hook with a safety latch, marked with its WLL and proof load tested. Slip hook, clevis or eye configuration to match your sling.

  • StandardDIN 1480 / EN 1677
  • Size range0.5 - 15 t
  • MaterialAlloy Steel
  • Surface finishPainted
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Lifting Chain & Fittings — EN 818-2 / G80 / G100
Rigging Hardware

Lifting Chain & Fittings

Grade 80 and Grade 100 alloy steel short link chain for slings and hoists, with matching hooks, master links and connectors supplied as a certified assembly.

  • StandardEN 818-2 / G80
  • Size range6 - 22 mm
  • MaterialAlloy Steel 20Mn2
  • Surface finishPainted
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Non-Standard Bolt — Drawing based
Custom & Non-Standard

Non-Standard Bolt

Special head shapes, undercut shanks, extra-long lengths and multi-step diameters made from your drawing or sample. First-article sample approved before mass production.

  • StandardDrawing based
  • Size rangeAccording to drawing
  • MaterialCarbon / Alloy / Stainless / Brass
  • Surface finishAll finishes available
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Cold Headed Special Part — Drawing based
Custom & Non-Standard

Cold Headed Special Part

Cold heading is cheaper and stronger than machining for high volume small parts. We form special pins, rivets, connectors, terminals and shaped fasteners on multi-station headers.

  • StandardDrawing based
  • Size rangeAccording to drawing
  • MaterialCarbon / Alloy / Stainless
  • Surface finishZinc
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Metal Stamping Part — Drawing based
Custom & Non-Standard

Metal Stamping Part

Progressive die stamping for brackets, clips, terminals, washers and cover plates. In-house tooling keeps mould cost down and lead time short.

  • StandardDrawing based
  • Size rangeThickness 0.3 - 8 mm
  • MaterialCarbon Steel / Stainless / Aluminium
  • Surface finishZinc
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CNC Turned Part — Drawing based
Custom & Non-Standard

CNC Turned Part

Precision turned parts for small and medium volumes where tolerances are tight or the geometry can not be forged. Dimensional report supplied with each lot.

  • StandardDrawing based
  • Size rangeDia. 3 - 120 mm
  • MaterialSteel / Stainless / Brass / Aluminium
  • Surface finishAnodized
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Forged & Cast Part — Drawing based
Custom & Non-Standard

Forged & Cast Part

Hot forged and cast components with secondary machining, for parts too large or too complex for cold heading. Includes heat treatment and surface finishing.

  • StandardDrawing based
  • Size rangeUp to 25 kg
  • MaterialCarbon Steel / Alloy Steel / Ductile Iron
  • Surface finishMachined
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