Socket Cap Screws - BA

BA thread (British association) is a rarely used thread that was once commonly found on small instruments and models. Still sparingly used in some industries such as metering equipment manufacturing and optical equipment.

Socket Cap Screws - BA
Guides & Tips

4BA x 3/8" - Socket Cap Screw - A2 Stainless Steel - Pack of 5

CODE: SCBAA204037

£19.85 £23.82

Pitch:

0.66P

Threads Per Inch:

38.5

Diameter:

0.142"

Material:

A2 Stainless Steel

Finish:

Stainless Steel

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

3/8"

Tapping Drill Size:

3mm

MORE INFO

4BA x 5/8" - Socket Cap Screw - A2 Stainless Steel - Pack of 5

CODE: SCBAA204062

£29.40 £35.28

Pitch:

0.66P

Threads Per Inch:

38.5

Diameter:

0.142"

Material:

A2 Stainless Steel

Finish:

Stainless Steel

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

5/8"

Tapping Drill Size:

3mm

MORE INFO

2BA x 1/2" - Socket Cap Screw - A4 Stainless Steel - Pack of 5

CODE: SCBAA402050

£29.49 £35.39

Pitch:

0.81P

Threads Per Inch:

31.4

Diameter:

0.185"

Material:

A4 Stainless Steel

Finish:

Stainless Steel

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

1/2"

Tapping Drill Size:

4mm

MORE INFO

4BA x 3/4" - Socket Cap Screw - A4 Stainless Steel - Pack of 5

CODE: SCBAA404075

£29.40 £35.28

Pitch:

0.66P

Threads Per Inch:

38.5

Diameter:

0.142"

Material:

A4 Stainless Steel

Finish:

Stainless Steel

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

3/4"

Tapping Drill Size:

3mm

MORE INFO

0BA x 1/2" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 5

CODE: SCBASC00050

£19.86 £23.83

Pitch:

1.00P

Threads Per Inch:

25.4

Grade:

Grade 12.9

Diameter:

0.236"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

1/2"

Tapping Drill Size:

5.1mm

MORE INFO

0BA x 1" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 25

CODE: SCBASC00100

£50.04 £60.05

Pitch:

1.00P

Threads Per Inch:

25.4

Grade:

Grade 12.9

Diameter:

0.236"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

Tapping Drill Size:

5.1mm

MORE INFO

2BA x 1/4" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 25

CODE: SCBASC02025

£43.28 £51.94

Pitch:

0.81P

Threads Per Inch:

31.4

Grade:

Grade 12.9

Diameter:

0.185"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

1/4"

Tapping Drill Size:

4mm

MORE INFO

2BA x 5/16" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 25

CODE: SCBASC02031

£21.48 £25.78

Pitch:

0.81P

Threads Per Inch:

31.4

Grade:

Grade 12.9

Diameter:

0.185"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

5/16"

Tapping Drill Size:

4mm

MORE INFO

2BA x 3/8" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 25

CODE: SCBASC02037

£47.33 £56.80

Pitch:

0.81P

Threads Per Inch:

31.4

Grade:

Grade 12.9

Diameter:

0.185"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

3/8"

Tapping Drill Size:

4mm

MORE INFO

2BA x 1/2" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 25

CODE: SCBASC02050

£48.52 £58.22

Pitch:

0.81P

Threads Per Inch:

31.4

Grade:

Grade 12.9

Diameter:

0.185"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

1/2"

Tapping Drill Size:

4mm

MORE INFO

2BA x 5/8" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 25

CODE: SCBASC02062

£52.47 £62.96

Pitch:

0.81P

Threads Per Inch:

31.4

Grade:

Grade 12.9

Diameter:

0.185"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

5/8"

Tapping Drill Size:

4mm

MORE INFO

2BA x 7/8" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 25

CODE: SCBASC02087

£53.37 £64.04

Pitch:

0.81P

Threads Per Inch:

31.4

Grade:

Grade 12.9

Diameter:

0.185"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

7/8"

Tapping Drill Size:

4mm

MORE INFO

2BA x 1 1/4" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 25

CODE: SCBASC02125

£54.12 £64.94

Pitch:

0.81P

Threads Per Inch:

31.4

Grade:

Grade 12.9

Diameter:

0.185"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

1 1/4"

Tapping Drill Size:

4mm

MORE INFO

2BA x 1 3/4" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 25

CODE: SCBASC02175

£58.22 £69.86

Pitch:

0.81P

Threads Per Inch:

31.4

Grade:

Grade 12.9

Diameter:

0.185"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

1 3/4"

Tapping Drill Size:

4mm

MORE INFO

2BA x 2" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 25

CODE: SCBASC02200

£58.22 £69.86

Pitch:

0.81P

Threads Per Inch:

31.4

Grade:

Grade 12.9

Diameter:

0.185"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

Tapping Drill Size:

4mm

MORE INFO

4BA x 1/4" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 25

CODE: SCBASC04025

£28.95 £34.74

Pitch:

0.66P

Threads Per Inch:

38.5

Grade:

Grade 12.9

Diameter:

0.142"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

1/4"

Tapping Drill Size:

3mm

MORE INFO

4BA x 7/16" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 25

CODE: SCBASC04043

£21.25 £25.50

Pitch:

0.66P

Threads Per Inch:

38.5

Grade:

Grade 12.9

Diameter:

0.142"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

7/16"

Tapping Drill Size:

3mm

MORE INFO

4BA x 1/2" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 25

CODE: SCBASC04050

£32.52 £39.02

Pitch:

0.66P

Threads Per Inch:

38.5

Grade:

Grade 12.9

Diameter:

0.142"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

1/2"

Tapping Drill Size:

3mm

MORE INFO

4BA x 3/4" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 16

CODE: SCBASC04075

Only 1 pack left in stock

£23.28 £27.94

Pitch:

0.66P

Threads Per Inch:

38.5

Grade:

Grade 12.9

Diameter:

0.142"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

3/4"

Tapping Drill Size:

3mm

MORE INFO

4BA x 1" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 25

CODE: SCBASC04100

£28.52 £34.22

Pitch:

0.66P

Threads Per Inch:

38.5

Grade:

Grade 12.9

Diameter:

0.142"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

Tapping Drill Size:

3mm

MORE INFO

4BA x 1 1/4" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 25

CODE: SCBASC04125

£28.95 £34.74

Pitch:

0.66P

Threads Per Inch:

38.5

Grade:

Grade 12.9

Diameter:

0.142"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

1 1/4"

Tapping Drill Size:

3mm

MORE INFO

4BA x 1 1/2" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 25

CODE: SCBASC04150

£44.07 £52.88

Pitch:

0.66P

Threads Per Inch:

38.5

Grade:

Grade 12.9

Diameter:

0.142"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

1 1/2"

Tapping Drill Size:

3mm

MORE INFO

4BA x 1 3/4" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 25

CODE: SCBASC04175

£44.44 £53.33

Pitch:

0.66P

Threads Per Inch:

38.5

Grade:

Grade 12.9

Diameter:

0.142"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

1 3/4"

Tapping Drill Size:

3mm

MORE INFO

6BA x 3/8" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 25

CODE: SCBASC06037

£28.01 £33.61

Pitch:

0.53P

Threads Per Inch:

47.9

Grade:

Grade 12.9

Diameter:

0.11"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

3/8"

Tapping Drill Size:

2.3mm

MORE INFO

6BA x 1/2" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 25

CODE: SCBASC06050

£41.23 £49.48

Pitch:

0.53P

Threads Per Inch:

47.9

Grade:

Grade 12.9

Diameter:

0.11"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

1/2"

Tapping Drill Size:

2.3mm

MORE INFO

6BA x 3/4" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 25

CODE: SCBASC06075

£42.38 £50.86

Pitch:

0.53P

Threads Per Inch:

47.9

Grade:

Grade 12.9

Diameter:

0.11"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

3/4"

Tapping Drill Size:

2.3mm

MORE INFO

8BA x 5/16" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 2

CODE: SCBASC08031

Only 1 pack left in stock

£2.85 £3.42

Pitch:

0.43P

Threads Per Inch:

59.1

Grade:

Grade 12.9

Diameter:

0.086"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

5/16"

Tapping Drill Size:

1.8mm

MORE INFO

8BA x 3/8" - Socket Cap Screw BS 2470 Grade 12.9 - Self Colour - Pack of 25

CODE: SCBASC08037

£30.36 £36.43

Pitch:

0.43P

Threads Per Inch:

59.1

Grade:

Grade 12.9

Diameter:

0.086"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

3/8"

Tapping Drill Size:

1.8mm

MORE INFO

2BA x 3/8" - Socket Cap Screw Grade 12.9 - BZP - Pack of 4

CODE: SCBAZP02037

Only 1 pack left in stock

£5.23 £6.28

Pitch:

0.81P

Threads Per Inch:

31.4

Grade:

Grade 12.9

Diameter:

0.185"

Material:

Steel

Finish:

Bright Zinc Plated and Clear Passivation

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

3/8"

Tapping Drill Size:

4mm

MORE INFO

2BA x 3/4" - Socket Cap Screw Grade 12.9 - BZP - Pack of 25

CODE: SCBAZP02075

£18.17 £21.80

Pitch:

0.81P

Threads Per Inch:

31.4

Grade:

Grade 12.9

Diameter:

0.185"

Material:

Steel

Finish:

Bright Zinc Plated and Clear Passivation

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

3/4"

Tapping Drill Size:

4mm

MORE INFO

2BA x 7/8" - Socket Cap Screw Grade 12.9 - BZP - Pack of 25

CODE: SCBAZP02087

£67.77 £81.32

Pitch:

0.81P

Threads Per Inch:

31.4

Grade:

Grade 12.9

Diameter:

0.185"

Material:

Steel

Finish:

Bright Zinc Plated and Clear Passivation

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

7/8"

Tapping Drill Size:

4mm

MORE INFO

4BA x 5/8" - Socket Cap Screw Grade 12.9 - BZP - Pack of 25

CODE: SCBAZP04062

£32.52 £39.02

Pitch:

0.66P

Threads Per Inch:

38.5

Grade:

Grade 12.9

Diameter:

0.142"

Material:

Steel

Finish:

Bright Zinc Plated and Clear Passivation

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

5/8"

Tapping Drill Size:

3mm

MORE INFO

4BA x 7/8" - Socket Cap Screw Grade 12.9 - BZP - Pack of 25

CODE: SCBAZP04087

£32.03 £38.44

Pitch:

0.66P

Threads Per Inch:

38.5

Grade:

Grade 12.9

Diameter:

0.142"

Material:

Steel

Finish:

Bright Zinc Plated and Clear Passivation

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

7/8"

Tapping Drill Size:

3mm

MORE INFO

2BA x 5/8" - Socket Cap Screw BS 2470 Grade 12.9 - Wedgelock Patch - Self Colour - Pack of 25

CODE: SCWBASC02062

£23.68 £28.42

Pitch:

0.81P

Threads Per Inch:

31.4

Grade:

Grade 12.9

Diameter:

0.185"

Material:

Steel

Finish:

Self Colour

Head Type:

Socket Cap

Thread Type:

Imperial - BA

Length Under Head:

5/8"

Tapping Drill Size:

4mm

MORE INFO

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