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A325 · A490
Structural bolts ASTM F3125 – Grade A325 & A490
Heavy hex structural bolts ½ – 1½ in, A563 nuts, F436 washers.
详情与表格 →
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.
- 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
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.
8.8 · M16 – M36
Structural bolts AS/NZS 1252.1 – property class 8.8
Australian / NZ assemblies for 8.8/S, 8.8/TB and 8.8/TF joints.
详情与表格 →HR · HV 10.9
Preloadable bolting assemblies EN 14399 – HV & HR
CE-marked preloadable assemblies, k-class K1 / K2.
详情与表格 →
F1852 · S10T · HRC
Tension control (TC) bolts – twist-off
Twist-off bolts tensioned from one side, inspected by eye.
详情与表格 →
4.6 – 10.9
Metric hex bolts & screws – ISO 4014 / 4017, class 4.6 to 10.9
ISO 4014 / 4017 bolts and screws M6 – M64.
详情与表格 →
A563 · F436 · F959
Nuts, washers & direct tension indicators
Heavy hex nuts, hardened and plate washers, DTIs.
详情与表格 →
Class 3 / 4
Self-drilling screws & cladding fasteners
Self-drilling screws with EPDM washers for sheeting.
详情与表格 →
Gr 36 · 55 · 105
Anchor rods ASTM F1554 – Grade 36, 55 & 105
Colour-coded anchor rods – L, J and headed.
详情与表格 →
M16 – M64
Metric anchor bolts – L, J, headed & hammer-head
Metric L, J, headed and straight anchor bolts.
详情与表格 →
Cages · templates
Anchor bolt assemblies, cages & templates
Pre-assembled bolt groups that set every column right.
详情与表格 →In the structure
Where each bolt goes
From the column base to the roof sheet, each connection has its own fastener.
anchor bolts
Column bases
Anchor rods or bolt cages cast in the foundation, levelling nuts and plate washers.
8.8 · 10.9 · A325
Primary connections
End-plate, splice and bracing connections – snug-tight or preloaded.
TC bolts
Large bolted structures
Multi-storey frames and bridges tensioned with shear wrenches.
purlin bolts
Secondary steel
Purlin and girt laps, cleats, flange braces and bridging.
self-drilling screws
Cladding
Roof and wall sheets fixed and sealed in one step.
chemical anchors
Existing concrete
Post-installed anchors where nothing was cast in – see chemical anchors.
应用领域
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.
规范与合规
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
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
Europe
- EN 14399Preloadable bolting assemblies HR / HV / HRC
- EN 15048Non-preloaded bolting assemblies
- EN 1090-2 WSC 已认证Execution – tightening and inspection
- EN 1992-4Fastenings in concrete
摘要仅供参考——以项目技术规格书、所采用的规范版本及主管机构要求为准。
工程设计
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.
工程设计
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.
工程设计
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.
工程设计
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.
工程设计
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.
Reference data
Bolt sizes and properties
Selection data – design resistance comes from the design code of the project.
| Size | Pitch (mm) | Heavy hex AF | ISO 4014 AF | As (mm²) | 4.6 (kN) | 8.8 (kN) | 10.9 (kN) |
|---|---|---|---|---|---|---|---|
| M12 | 1.75 | 22 | 18 | 84.3 | 33.7 | 67.4 | 87.7 |
| M16 | 2.0 | 27 | 24 | 157 | 62.8 | 126 | 163 |
| M20 | 2.5 | 32 | 30 | 245 | 98.0 | 203 | 255 |
| M22 | 2.5 | 36 | 34 | 303 | 121 | 251 | 315 |
| M24 | 3.0 | 41 | 36 | 353 | 141 | 293 | 367 |
| M27 | 3.0 | 46 | 41 | 459 | 184 | 381 | 477 |
| M30 | 3.5 | 50 | 46 | 561 | 224 | 466 | 583 |
| M36 | 4.0 | 60 | 55 | 817 | 327 | 678 | 850 |
| M42 | 4.5 | – | 65 | 1120 | 448 | 930 | 1165 |
| M48 | 5.0 | – | 75 | 1470 | 588 | 1220 | 1529 |
| M56 | 5.5 | – | 85 | 2030 | 812 | 1685 | 2111 |
| M64 | 6.0 | – | 95 | 2680 | 1072 | 2224 | 2787 |
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).
| Size | AS 4100 · 8.8 (kN) | EN · 8.8 (kN) | EN · 10.9 (kN) |
|---|---|---|---|
| M16 | 95 | 88 | 110 |
| M20 | 145 | 137 | 172 |
| M24 | 210 | 198 | 247 |
| M30 | 335 | 314 | 393 |
| M36 | 490 | 458 | 572 |
AS 4100 Nti for 8.8/TB and 8.8/TF; EN 1993-1-8 Fp,C = 0.7 fub As.
| Diameter | TPI | Heavy hex AF | As (in²) | A325 (kips) | A490 (kips) | Pretension A / B (kips) |
|---|---|---|---|---|---|---|
| ½ in | 13 | ⅞ in | 0.142 | 17.0 | 21.3 | 12 / 15 |
| ⅝ in | 11 | 1 1/16 in | 0.226 | 27.1 | 33.9 | 19 / 24 |
| ¾ in | 10 | 1¼ in | 0.334 | 40.1 | 50.1 | 28 / 35 |
| ⅞ in | 9 | 1 7/16 in | 0.462 | 55.4 | 69.3 | 39 / 49 |
| 1 in | 8 | 1⅝ in | 0.606 | 72.7 | 90.9 | 51 / 64 |
| 1⅛ in | 7 | 1 13/16 in | 0.763 | 91.6 | 114.5 | 64 / 80 |
| 1¼ in | 7 | 2 in | 0.969 | 116.3 | 145.4 | 81 / 102 |
| 1⅜ in | 6 | 2 3/16 in | 1.155 | 138.6 | 173.3 | 97 / 121 |
| 1½ in | 6 | 2⅜ in | 1.405 | 168.6 | 210.8 | 118 / 148 |
Minimum tensile load = As × 120 ksi (A325) / 150 ksi (A490); pretension per RCSC 2020, Group A / Group B.
| Diameter | As (in²) | Grade 36 (kips) | Grade 55 (kips) | Grade 105 (kips) |
|---|---|---|---|---|
| ½ in | 0.142 | 8.2 | 10.7 | 17.8 |
| ⅝ in | 0.226 | 13.1 | 17.0 | 28.3 |
| ¾ in | 0.334 | 19.4 | 25.1 | 41.8 |
| ⅞ in | 0.462 | 26.8 | 34.7 | 57.8 |
| 1 in | 0.606 | 35.1 | 45.5 | 75.8 |
| 1¼ in | 0.969 | 56.2 | 72.7 | 121.1 |
| 1½ in | 1.405 | 81.5 | 105.4 | 175.6 |
| 1¾ in | 1.900 | 110.2 | 142.5 | 237.5 |
| 2 in | 2.500 | 145.0 | 187.5 | 312.5 |
Minimum tensile load = As × minimum tensile strength (58 / 75 / 125 ksi).
| Bolt type | Standards | Where it is used |
|---|---|---|
| High-strength structural bolt | F3125 A325 / A490 · AS/NZS 1252.1 · EN 14399 HR / HV | Primary connections, splices, bracing, moment end plates |
| Tension control bolt | F3125 F1852 / F2280 · EN 14399-10 · S10T | Large bolted frames and bridges |
| Commercial / machine bolt | ASTM A307 · AS 1111 4.6 · ISO 4014 / 4017 | Secondary members, girts, handrails, grating |
| Purlin bolt | M12 / M16 4.6 – 8.8 HDG | Purlin and girt laps, cleats, flange braces |
| Anchor rod / bolt | ASTM F1554 · AS 1111 · ISO 898-1 | Column bases, equipment, towers |
| Threaded rod / stud | A193 B7 · DIN 976 · F1554 | Hangers, ties, chemical anchor rods |
| Self-drilling screw | AS 3566 class 3 / 4 | Roof and wall sheeting, flashings |
| Shear stud | AWS D1.1 · ISO 13918 | Composite floors with steel deck |
技术规格
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
流程
How we deliver bolting
- 1
Bolt list
From the 3D model and connection design.
- 2
Standard
One system to the code of the project.
- 3
Sourcing & tests
Lot certificates, rotational capacity, k-class.
- 4
Anchor bolts
Cut, threaded, bent, galvanized, caged in our plant.
- 5
Packing
By building, bay and connection mark.
- 6
Delivery
Anchor bolts first, then bolts with the steel.
交货条件 · Incoterms® 2020
按您需要的条件交货
World Steel 可报出厂价、船上交货价或运至贵方港口、工地的价格。出口包装、单证及自胡志明市的运输均属我们的服务。
比较全部 Incoterms® 2020 →FAQ
常见问题
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.
相关内容
钢制品
PEB 知识
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.