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Machine Screws - Cheese - BSW

A machine screw is a type of screw that is commonly used in industrial and manufacturing applications to secure components within engines, electronic products and general machinery.

Cheese head machine screws have large, chunky, cylindrical heads where the height of the head is usually approximately half of its diameter. With a slotted head for installation with a flat-bladed screwdriver or bit, cheese head machine screws are strong and durable.

For a similar type of machine screw that has a slightly larger diameter flat head and a slightly lower thinner profile then choose our pan slotted machine screw.

About BSW Thread

BSW (British Standard Whitworth) is an imperial coarse thread first used in standard production by Joseph Whitworth during the industrial revolution. Whilst it is still used in engineering applications all across the world it is less common in the UK where metric threads have generally taken over.

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Machine Screws - Cheese - BSW
Guides & Tips

Code Product Name Info Pack Size Price Qty

5/32" BSW x 1/4" - Machine Screw Cheese Head Slotted BS 450 - Self Colour - Pack of 25

25

£14.52 £17.42

Threads Per Inch: 32
Diameter: 5/32"
Material: Steel
Finish: Self Colour
Head Type: Cheese Head Slotted
Thread Type: Imperial - BSW
Length Under Head: 1/4"
Tapping Drill Size: 3.1mm

5/32" BSW x 1/4" - Machine Screw Cheese Head Slotted BS 450 - Self Colour - Pack of 25

25

£14.52 £17.42

Threads Per Inch: 32
Diameter: 5/32"
Material: Steel
Finish: Self Colour
Head Type: Cheese Head Slotted
Thread Type: Imperial - BSW
Length Under Head: 1/4"
Tapping Drill Size: 3.1mm

5/32" BSW x 1/2" - Machine Screw Cheese Head Slotted BS 450 - Self Colour - Pack of 25

25

£18.52 £22.22

Threads Per Inch: 32
Diameter: 5/32"
Material: Steel
Finish: Self Colour
Head Type: Cheese Head Slotted
Thread Type: Imperial - BSW
Length Under Head: 1/2"
Tapping Drill Size: 3.1mm

5/32" BSW x 1/2" - Machine Screw Cheese Head Slotted BS 450 - Self Colour - Pack of 25

25

£18.52 £22.22

Threads Per Inch: 32
Diameter: 5/32"
Material: Steel
Finish: Self Colour
Head Type: Cheese Head Slotted
Thread Type: Imperial - BSW
Length Under Head: 1/2"
Tapping Drill Size: 3.1mm

5/16" BSW x 1/2" - Machine Screw Cheese Head Slotted BS 450 - Self Colour - Pack of 25

25

£32.21 £38.65

Threads Per Inch: 18
Diameter: 5/16"
Material: Steel
Finish: Self Colour
Head Type: Cheese Head Slotted
Thread Type: Imperial - BSW
Length Under Head: 1/2"
Tapping Drill Size: 6.5mm

5/16" BSW x 1/2" - Machine Screw Cheese Head Slotted BS 450 - Self Colour - Pack of 25

25

£32.21 £38.65

Threads Per Inch: 18
Diameter: 5/16"
Material: Steel
Finish: Self Colour
Head Type: Cheese Head Slotted
Thread Type: Imperial - BSW
Length Under Head: 1/2"
Tapping Drill Size: 6.5mm

5/16" BSW x 3/4" - Machine Screw Cheese Head Slotted BS 450 - Self Colour - Pack of 25

25

£35.27 £42.32

Threads Per Inch: 18
Diameter: 5/16"
Material: Steel
Finish: Self Colour
Head Type: Cheese Head Slotted
Thread Type: Imperial - BSW
Length Under Head: 3/4"
Tapping Drill Size: 6.5mm

5/16" BSW x 3/4" - Machine Screw Cheese Head Slotted BS 450 - Self Colour - Pack of 25

25

£35.27 £42.32

Threads Per Inch: 18
Diameter: 5/16"
Material: Steel
Finish: Self Colour
Head Type: Cheese Head Slotted
Thread Type: Imperial - BSW
Length Under Head: 3/4"
Tapping Drill Size: 6.5mm

3/8" BSW x 1 1/4" - Machine Screw Cheese Head Slotted BS 450 - Self Colour - Pack of 25

Discontinued please try our Round head version

25

£64.27 £77.12

Threads Per Inch: 16
Diameter: 3/8"
Material: Steel
Finish: Self Colour
Head Type: Cheese Head Slotted
Thread Type: Imperial - BSW
Length Under Head: 1 1/4"
Tapping Drill Size: 7.9mm

3/8" BSW x 1 1/4" - Machine Screw Cheese Head Slotted BS 450 - Self Colour - Pack of 25

Discontinued please try our Round head version

25

£64.27 £77.12

Threads Per Inch: 16
Diameter: 3/8"
Material: Steel
Finish: Self Colour
Head Type: Cheese Head Slotted
Thread Type: Imperial - BSW
Length Under Head: 1 1/4"
Tapping Drill Size: 7.9mm

1/4" BSW x 1/2" - Machine Screw Cheese Head Slotted BS 450 - BZP - Pack of 25

25

£21.54 £25.85

Threads Per Inch: 20
Diameter: 1/4"
Material: Steel
Finish: Bright Zinc Plated and Clear Passivation
Head Type: Cheese Head Slotted
Thread Type: Imperial - BSW
Length Under Head: 1/2"
Tapping Drill Size: 5.1mm

1/4" BSW x 1/2" - Machine Screw Cheese Head Slotted BS 450 - BZP - Pack of 25

25

£21.54 £25.85

Threads Per Inch: 20
Diameter: 1/4"
Material: Steel
Finish: Bright Zinc Plated and Clear Passivation
Head Type: Cheese Head Slotted
Thread Type: Imperial - BSW
Length Under Head: 1/2"
Tapping Drill Size: 5.1mm

3/8" BSW x 1" - Machine Screw Cheese Head Slotted BS 450 - BZP - Pack of 5

5

£15.62 £18.74

Threads Per Inch: 16
Diameter: 3/8"
Material: Steel
Finish: Bright Zinc Plated and Clear Passivation
Head Type: Cheese Head Slotted
Thread Type: Imperial - BSW
Length Under Head: 1"
Tapping Drill Size: 7.9mm

3/8" BSW x 1" - Machine Screw Cheese Head Slotted BS 450 - BZP - Pack of 5

5

£15.62 £18.74

Threads Per Inch: 16
Diameter: 3/8"
Material: Steel
Finish: Bright Zinc Plated and Clear Passivation
Head Type: Cheese Head Slotted
Thread Type: Imperial - BSW
Length Under Head: 1"
Tapping Drill Size: 7.9mm

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