Wholesale BS 1768:1963 Inch Series Hex Head Drilled Shank Bolt

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BS 1768:1963 Inch Series Hex Head Drilled Shank Bolt

BS 1768:1963 Inch Series Hex Head Drilled Shank Bolt belongs to the inch-series fastener system. The drilled shank allows use with split pins, lock wire, or other mechanical locking methods where additional locking confirmation is required.

The refined specification supports dimensional consistency and good assembly feel, while the hex head allows quick service with common tools. It is suitable for legacy inch-series equipment, older machinery maintenance, engineering vehicles, transmission joints, and export spare parts.

Procurement should confirm inch thread form, drilled-hole location, grip length, and matching nut size. Material and corrosion-protection options can be selected according to inventory needs or project environment to reduce replacement and maintenance risk.

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Dimensions: inch

Thread size d

1/4

5/16

3/8

7/16

1/2

(9/16)

5/8

3/4

PP

UNC

20

18

16

14

13

12

11

10

UNF

28

24

24

20

20

18

18

16

ds

Max.

0.25

0.3125

0.375

0.4375

0.5

0.5625

0.625

0.75

Min.

0.2465

0.309

0.3715

0.4335

0.496

0.5585

0.619

0.744

s

Max.

0.4375

0.5

0.5625

0.625

0.75

0.8125

0.9375

1.125

Min.

0.4305

0.493

0.5545

0.617

0.742

0.8045

0.9295

1.115

e

Max.

0.505

0.577

0.65

0.722

0.866

0.938

1.083

1.3

da

Max.

0.421

0.483

0.545

0.605

0.73

0.792

0.918

1.1

Min.

0.411

0.473

0.535

0.595

0.72

0.782

0.908

1.09

k

Max.

0.163

0.211

0.243

0.291

0.323

0.371

0.403

0.483

Min.

0.153

0.201

0.233

0.281

0.313

0.361

0.393

0.463

r

Max.

0.025

0.025

0.025

0.025

0.025

0.045

0.045

0.045

Min.

0.015

0.015

0.015

0.015

0.015

0.02

0.02

0.02

d1

Max.

0.084

0.1

0.117

0.117

0.152

0.152

0.184

0.184

Min.

0.079

0.095

0.112

0.112

0.146

0.146

0.177

0.177

 

Thread size d

7/8

1

1-1/8

1-1/4

(1-3/8)

1-1/2

1-3/4

2

PP

UNC

9

8

7

7

6

6

5

2004/1/2

UNF

14

12

-

-

-

-

-

-

ds

Max.

0.875

1

1.125

1.25

1.375

1.5

1.75

2

Min.

0.867

0.992

1.117

1.242

1.365

1.49

1.74

1.99

s

Max.

1.3125

1.5

1.6875

1.875

2.0625

2.25

2.625

3

Min.

1.3005

1.488

1.6575

1.83

2.0175

2.205

2.565

2.94

e

Max.

1.515

1.732

1.948

2.165

2.382

2.598

3.031

3.464

da

Max.

1.285

1.473

1.641

1.813

2.001

2.188

2.543

2.918

Min.

1.275

1.463

1.625

1.797

1.985

2.172

2.527

2.902

k

Max.

0.563

0.627

0.718

0.813

0.878

0.974

1.134

1.263

Min.

0.543

0.597

0.678

0.773

0.838

0.934

1.074

1.203

r

Max.

0.065

0.095

0.095

0.095

0.095

0.095

0.095

0.095

Min.

0.04

0.06

0.06

0.06

0.06

0.06

0.06

0.06

d1

Max.

0.184

0.222

0.222

0.254

0.254

0.29

0.353

0.353

Min.

0.177

0.213

0.213

0.244

0.244

0.28

0.343

0.343

① Bolts with cotter pins are only available on special order. Purchasers should indicate Dimension Lh in their inquiries and orders.

FAQ

Frequently Asked Questions

  • 1. How soon can I expect a reply after sending an inquiry?

    A: We take every inquiry seriously. On working days, we will respond within 12 hours after receiving your inquiry.

  • 2. What products do you mainly offer?

    A: We focus on the production of fasteners made of carbon steel, stainless steel, and low-alloy steel. We are a direct manufacturer with independent production capacity. BS 1768:1963 Inch Series Hex Head Drilled Shank Bolt Factory. We own several fastener manufacturing facilities and have an international sales department, providing full-process services from production to export.

  • 3. Do you support customized production?

    A: Customized production is our core business. We can develop and manufacture products based on the drawings or samples you provide.

  • 4. Do you produce standard parts?

    A: Yes. In addition to custom products, we also produce general construction machinery parts (GET parts) for equipment such as excavators, including bucket teeth, tooth holders, corner blades, pins, clips, bolts and nuts. BS 1768:1963 Inch Series Hex Head Drilled Shank Bolt Wholesale.

  • 5. What is your production capacity?

    A: We have 12 energy-efficient and environmentally friendly modern production lines (including one fully automatic shell molding line and four heat treatment lines), with an annual production capacity exceeding 20,000 tons, enabling us to steadily meet various order requirements.

  • 6. What are your payment terms?

    A: Trade terms (such as FOB, CIF, etc.) are confirmed when quoting. For batch production, we typically require a 30% deposit, with the balance paid against the copy of the bill of lading. T/T is the main payment method accepted, and L/C can also be negotiated.

  • 7. How is the shipment arranged?

    A: We are only 35 km away from Shanghai Port and Ningbo Port, so sea freight is the main mode of transportation, which is convenient and efficient. For urgent deliveries, we can also arrange air freight via Ningbo or Shanghai airports.

Better Fastener Industry Co., Ltd.

About Us

BETTER FASTENER INDUSTRY CO., LTD.

Better Fastener is a professional fastener enterprise specializing in the manufacturing of steel washers, stainless steel washers, spring washers and sealingwashers. Founded in 2001 as a washer factory, the company expanded into a comprehensive enterprise integrating washers, nuts, bolts, spring nuts and other fastener products in 2010. BS 1768:1963 Inch Series Hex Head Drilled Shank Bolt Suppliers in China.

The company positions itself as a provider of comprehensive one-stop services for customers, relying on technological R&D, industrial investment and trade distribution.

With an experienced professional team and a sound sales network, Better Fastener has achieved excellent sales performance in both domestic and foreign markets,and has grown into one of the competitive manufacturers and suppliers in China's industrial fastener industry.

Better Fastener is committed to becoming a trusted fastener supplier for customers with reliable product quality, reasonable prices and on-time delivery

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