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

£19.65 £23.58

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

£29.11 £34.93

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

£29.20 £35.04

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

£29.11 £34.93

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

£19.66 £23.59

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

£49.54 £59.45

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

£42.85 £51.42

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:

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

£21.27 £25.52

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

£46.86 £56.23

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

£48.04 £57.65

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

£51.95 £62.34

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

£52.84 £63.41

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

£53.58 £64.30

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

£57.64 £69.17

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

£57.64 £69.17

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

£28.66 £34.39

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

£21.04 £25.25

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

£32.20 £38.64

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

£23.05 £27.66

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

£28.24 £33.89

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

£28.66 £34.39

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

£43.63 £52.36

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

£44.00 £52.80

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

£27.73 £33.28

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

£40.82 £48.98

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

£41.96 £50.35

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

£2.82 £3.38

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

£30.06 £36.07

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

£5.18 £6.22

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

£17.99 £21.59

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

£67.10 £80.52

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

£32.20 £38.64

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

£31.71 £38.05

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

£23.45 £28.14

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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