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dang.victor@worldsteelgroup.com +84 902 881 833
World SteelBuilding trust, Assuring success
Bolted splice with high-strength bolts, nuts and washers

Solution · WS bolts & anchor bolts

The right bolt for every connection, in every code

High-strength structural bolts to ASTM F3125, AS/NZS 1252.1 and EN 14399, tension control bolts, metric hex bolts, purlin bolts, nuts, washers and DTIs – and cast-in anchor bolts from M16 to M64 and ½ to 4 in, supplied with the steel, connection by connection.

Request a bolting quoteKhám phá giải pháp

M12 – M64
Metric bolts and anchors
½ – 4 in imperial
4.6 – 10.9
Property classes
A307 · A325 · A490
5 codes
US · AU/NZ · EU · JP · CN
1 lot
Bolt, nut and washer tested together
Structural bolting assembly with bolt, nut and hardened washers

Bolts are part of the structure

A steel building is only as strong as the bolts that hold it together and the anchor bolts that hold it down. The wrong grade, a mixed nut, a short thread or an anchor set two centimetres off – each costs days on site.

World Steel supplies bolting with the steel it fabricates: the bolt list comes from the same 3D model as the shop drawings, every assembly is from one tested lot to the standard of the project, and anchor bolts are fabricated, galvanized and caged in our plant before the first column leaves. For post-installed fixings see chemical anchors.

WS bolting range

Structural bolts, fasteners and anchor bolts

Each product has its own page with standards, sizes and ordering data.

In the structure

Where each bolt goes

From the column base to the roof sheet, each connection has its own fastener.

Column basesanchor bolts

Column bases

Anchor rods or bolt cages cast in the foundation, levelling nuts and plate washers.

Primary connections8.8 · 10.9 · A325

Primary connections

End-plate, splice and bracing connections – snug-tight or preloaded.

Large bolted structuresTC bolts

Large bolted structures

Multi-storey frames and bridges tensioned with shear wrenches.

Secondary steelpurlin bolts

Secondary steel

Purlin and girt laps, cleats, flange braces and bridging.

Existing concretechemical anchors

Existing concrete

Post-installed anchors where nothing was cast in – see chemical anchors.

Ứng dụng

Who uses WS bolting

01

Steel buildings & PEB

Complete bolt lists packed per building and bay.

02

Multi-storey frames

Preloaded and TC bolting for moment and braced frames.

03

Bridges & infrastructure

Slip-critical connections and galvanized assemblies.

04

Industrial plants

Equipment anchor bolts, pipe racks and platforms.

05

Towers & silos

Large-diameter anchor rods and bolt cages.

06

Contractors & traders

Bolting packages to the code of the destination.

Tiêu chuẩn & tuân thủ

Bolting codes by market

Bolts, nuts and washers are supplied as one system to the standard of the project:

Vietnam & Asia

  • TCVN 1916Bolts, screws, studs and nuts – technical requirements
  • TCVN 5575Steel structures – design, bolted connections
  • JIS B 1186 · GB/T 1228High-strength bolt sets F10T / 10.9S

United States

  • ASTM F3125A325 · A490 · F1852 · F2280
  • RCSC 2020Specification for structural joints
  • ASTM F1554Anchor rods Grade 36 / 55 / 105
  • ACI 318 Ch. 17Anchoring to concrete
Tất cả tiêu chuẩn United States →

Australia / NZ

  • AS/NZS 1252.1Structural bolting assemblies 8.8
  • AS 4100 · AS/NZS 5131Design and execution of bolted joints
  • AS 1111Commercial bolts 4.6
  • AS 5216Fastenings in concrete
Tất cả tiêu chuẩn Australia & New Zealand →

Europe

  • EN 14399Preloadable bolting assemblies HR / HV / HRC
  • EN 15048Non-preloaded bolting assemblies
  • EN 1090-2 WSC được chứng nhậnExecution – tightening and inspection
  • EN 1992-4Fastenings in concrete
Tất cả tiêu chuẩn Europe →

Nội dung chỉ mang tính tham khảo – chỉ dẫn kỹ thuật của dự án, phiên bản quy chuẩn được áp dụng và cơ quan có thẩm quyền là căn cứ quyết định.

Kỹ thuật

What makes a structural bolt

Heavy hex head, controlled thread length, a nut that develops the full bolt strength and a hardened washer under the turned element – structural bolts are systems, not loose parts. The grip decides the length; the shear plane decides whether threads may be included.

Head markings show the standard and grade – A325, A490, 8.8, 10.9 HV – together with the manufacturer, so inspectors can check every bolt.

Anatomy of a structural bolting assembly
Bolt grades across markets

Kỹ thuật

Same strength, different standards

A325 and 8.8, A490 and 10.9 sit at similar strength levels, but heads, threads, nuts, washers and tightening rules differ. We supply one system per project – US bolts for AISC and RCSC, AS/NZS 1252.1 for AS 4100, EN 14399 for EN 1993 – never a mix.

Kỹ thuật

Sizes you can see

From M12 to M36 and ½ to 1½ in, heavy hex heads drawn to the same scale with across-flats, pitch and tensile stress area. The full tables are below, and each product page lists its own range.

Structural bolt sizes to scale
Tightening methods and minimum bolt tension

Kỹ thuật

Tension you can verify

Preloaded bolts reach their minimum tension by part-turn, torque with a qualified k-class, twist-off TC bolts or direct tension indicators. We supply the matching assemblies, calibration data and – for TC bolts – shear wrenches.

Kỹ thuật

Anchor bolts that fit the first time

L-bolts, J-bolts, headed rods, rods with embedded plates and sleeved anchors – with projection, thread length and nuts sized from the base plate and grout. F1554 rods are colour-coded by grade.

Bolt groups are delivered as cages with templates, tagged by grid line, weeks before the steel.

Cast-in anchor bolt types

Reference data

Bolt sizes and properties

Selection data – design resistance comes from the design code of the project.

Metric bolts M12 – M64
SizePitch (mm)Heavy hex AFISO 4014 AFAs (mm²)4.6 (kN)8.8 (kN)10.9 (kN)
M121.75221884.333.767.487.7
M162.0272415762.8126163
M202.5323024598.0203255
M222.53634303121251315
M243.04136353141293367
M273.04641459184381477
M303.55046561224466583
M364.06055817327678850
M424.5–6511204489301165
M485.0–75147058812201529
M565.5–85203081216852111
M646.0–952680107222242787

ISO 898-1 minimum ultimate tensile load As × fu; 8.8: fu 800 MPa ≤ M16, 830 MPa above. Heavy hex AF per EN 14399-4 (AS/NZS 1252.1 M20 = 34).

Thông số

Specification & options

Structural bolts
F3125 A325 / A490, AS/NZS 1252.1 8.8, EN 14399 HR 8.8 / 10.9, HV 10.9, JIS F10T, GB 10.9S
Tension control
F1852, F2280, EN 14399-10 HRC, S10T
Commercial bolts
4.6 / 5.6 / 8.8 / 10.9 – ISO 4014 / 4017, A307, AS 1111
Anchor bolts
F1554 Gr 36 / 55 / 105; metric 4.6 – 8.8; L, J, headed, straight, cages and templates
Nuts & washers
A563 DH, A194 2H, ISO 4032, EN 14399; F436, plate and bevel washers; DTIs
Finish
Plain, hot-dip galvanized, zinc plated, zinc-flake, stainless A2 / A4
Documents
EN 10204 3.1 certificates, rotational-capacity tests, CE DoP, bolt lists by mark
Post-installed
Chemical anchors, mechanical anchors, post-installed rebar

Quy trình

How we deliver bolting

  1. 1

    Bolt list

    From the 3D model and connection design.

  2. 2

    Standard

    One system to the code of the project.

  3. 3

    Sourcing & tests

    Lot certificates, rotational capacity, k-class.

  4. 4

    Anchor bolts

    Cut, threaded, bent, galvanized, caged in our plant.

  5. 5

    Packing

    By building, bay and connection mark.

  6. 6

    Delivery

    Anchor bolts first, then bolts with the steel.

Điều kiện giao hàng · Incoterms® 2020

Giao hàng theo điều kiện quý khách cần

World Steel báo giá tại nhà máy, FOB hoặc giao đến cảng, công trình của quý khách. Đóng gói xuất khẩu, chứng từ và vận chuyển từ TP. Hồ Chí Minh là một phần dịch vụ.

So sánh 11 điều kiện Incoterms® 2020 →
FCAFree CarrierFOBFree On BoardCFRCost and FreightCIFCost, Insurance and FreightCPTCarriage Paid ToCIPCarriage and Insurance Paid To

Theo dự án hoặc theo yêu cầu: EXW · FAS · DAP · DPU · DDP

FAQ

Câu hỏi thường gặp

What is the difference between A325 and 8.8 bolts?

They have similar strength (about 830 MPa), but A325 bolts are inch-sized to ASTM F3125 with A563 nuts and F436 washers, while 8.8 bolts are metric to AS/NZS 1252.1 or EN 14399. They are not interchangeable – the project standard decides.

Can high-strength bolts be galvanized?

A325 / 8.8 bolts can be hot-dip galvanized with lubricated oversize-tapped nuts. A490 / 10.9 bolts are normally not hot-dip galvanized because of the risk of hydrogen embrittlement.

Which anchor bolt grade do I need?

The foundation design decides. F1554 Grade 36 covers most pinned bases; Grade 55 and 105 are used for fixed bases, moment frames and high uplift.

Do you supply anchor bolts before the steel?

Yes – anchor bolts and cages ship first, with setting drawings and templates, so foundations are ready when the steel arrives.

What documents come with the bolts?

EN 10204 3.1 certificates per lot, rotational-capacity or suitability test reports for preloaded systems, galvanizing certificates, CE Declarations of Performance for EN 14399 and bolt lists by connection mark.

Nội dung liên quan

Sản phẩm thép

Galvanized and black heavy hex structural bolts with nuts and hardened washersBolts & fastenersASTM F3125 boltsBolted splice with galvanized high-strength bolts through primed platesBolts & fastenersAS/NZS 1252 boltsHV and HR preloadable bolting assemblies with two washersBolts & fastenersEN 14399 HV / HRRound head tension control bolt with spline and nutBolts & fastenersTC boltsMetric hex bolts M12 to M24 with nutsBolts & fastenersMetric hex boltsLapped Z purlins bolted to a rafter cleatBolts & fastenersPurlin boltsHeavy hex nuts, hardened washers, square plate washers and DTI washersBolts & fastenersNuts, washers, DTIsBundle of galvanized threaded rods with a stud bolt and nutBolts & fastenersThreaded rods

Kiến thức PEB

High-strength structural bolts, nuts, washers and self-drilling cladding screws for a PEBWSC productsBolts & fastenersAnchor bolts with template set in a foundation below a PEB base plateWSC productsAnchor bolts & embedsColumn base plate with four anchor bolts, levelling nuts and grout on a concrete footingComponentsBase plates & anchor boltsBolted extended end-plate connection between a tapered column and rafter at the knee of a PEB frameDesignConnection design
Sản phẩmPrimary framingPEB buildings
Giải phápChemical anchorsExport supplyLight gauge steelFabrication
NgànhIndustrial
Thị trườngUnited StatesAustralia
Tiêu chuẩn & chứng nhậnUnited StatesAustralia & New ZealandEurope

Dự án tiêu biểu

Need a bolt list or anchor bolts?

Send the connection drawings or the anchor bolt plan – we return the bolting package to your code, with certificates and a delivered price.

Request a bolting quote +84 902 881 833