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Steel Grub Screws

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The lists below show our range of Metric, UNC, UNF, BA, and now also a limited range of
Whitworth  'grub' screws, in grade 10.9 high strength steel to Din 916

Quick Links to item on this page
Click on the images to go direct to each item list. Images are indicative only and exact forms may vary.

Metric Grub Screws

UNC Grub Screws

UNF Grub Screws

BA Grub Screws

BSW (Whitworth) Grub Screws

BSF (Whitworth Fine) Grub Screws

If you were looking for our stainless grub screw range page please click here

For our new Dog Point  range please click here

     
If you were looking for our new range of spring plungers  please click here

 

  All sizes have hexagon socket ends for driving with allen keys.

Socket sizes are stated in millimetres (imperial sizes have been converted to metric). If you need a key, click on the symbol in the tables below and you will be taken to the allen key and ball driver page.

Alternatively, Click Here

 

Grub Screw Kits

These grub screw kits are a handy selection of popular cup point sizes used in many hobby , household and engineering applications. Each kit contains sizes ranging from M2 to M6 plus the correct sized hex keys to drive them. We offer an option of a stainless steel kit and a black HT steel kit. Please scroll to the bottom of this page for more details or click here.

To order any of the items on this page, click on the 'Add to Order' button alongside the item of your choice. You can select the quantity on the order form (default is 1).
To continue ordering other items, use the 'Continue Shopping' button on order form.

You can review and edit your order, or submit your order at any time by using the button at the bottom of each list.

All dimensions are in millimetres

If the size you require isn't listed please e mail us for a no-obligation quotation.

If you need larger quantities (200 plus) please contact us for a quotation

If you're not sure what thread size you need, or need to send us a sample, click on our 'Thread Data' link at the top of this page'.

All prices include 20% VAT  Click here for details

Metric Thread Pitches
All our metric grub screws are standard pitch (metric coarse) as below unless stated otherwise.
For more guidance on screw thread dimensions please click here
Thread M1.6 M2 M2.5 M3 M4 M5 M6 M8 M10
Pitch (mm) 0.35 0.4 0.45 0.5 0.7 0.8 1.0 1.25 1.5

Grub Screws 

Metric  - Steel   Din 916

Thread

Overall  Length (mm)

Socket size Pack Qty

MF Ref

Price   You can enter/change the number of items on the order form
             
M2 3 5 MF-GS21 £0.90

50 MF-GS21-50 £6.75

             
M2 4 5 MF-GS22 £0.90

50 MF-GS22-50 £6.75

             
M2 5 5 MF-GS23 £1.50

50 MF-GS23-50 £11.25

             
M2 6 5 MF-GS24 £1.00

50 MF-GS24-50 £7.50

             
M2 8 5 MF-GS25 £1.50

50 MF-GS25-50 £11.25

             
M2.5 4

5 MF-GS26 £1.10

50 MF-GS26-50 £8.20

             
M2.5 5 5 MF-GS27 £1.10

50 MF-GS27-50 £8.20

             
M2.5 6 5 MF-GS28 £1.10

50 MF-GS28-50 £8.20

             
M2.5 8 5 MF-GS29 £1.40

50 MF-GS29-50 £10.50

             
M2.5 10 5 MF-GS30 £1.60

50 MF-GS30-50 £12.00

             
M3 3 5 MF-GS31 £0.90

50 MF-GS31-50 £6.75

             
M3 4

5 MF-GS32 £0.90

50 MF-GS32-50 £6.75

             
M3 5 5 MF-GS33 £1.00

50 MF-GS33-50 £7.50

             
M3 6 5 MF-GS34 £1.10

50 MF-GS34-50 £8.20

             
M3 8 5 MF-GS35 £1.10

50 MF-GS35-50 £8.20

             
M3 10 5 MF-GS36 £1.10

50 MF-GS36-50 £8.20

             
M3 16 5 MF-GS38 £1.25

50 MF-GS38-50 £9.40

             
M3 20 5 MF-GS40 £1.75

50 MF-GS40-50 £13.10

             
 
M4 4 5 MF-GS41 £0.75

50 MF-GS41-50 £5.60

             
M4 5 5 MF-GS42 £0.75

50 MF-GS42-50 £5.60

             
M4 6 5 MF-GS43 £0.75

50 MF-GS43-50 £5.60

             
M4 8 5 MF-GS44 £0.85

50 MF-GS44-50 £6.35

             
M4 10 5 MF-GS46 £0.85

50 MF-GS46-50 £6.35

             
M4 12 5 MF-GS47 £0.85

50 MF-GS47-50 £6.35

             
M4 16 5 MF-GS48 £0.90

50 MF-GS48-50 £6.75

             
M4 25 5 MF-GS49 £1.00

50 MF-GS49-50 £7.50

   
M5 5 5 MF-GS52 £0.75

M5 6 5 MF-GS53 £0.75

M5 8 5 MF-GS54 £0.85

M5 10 5 MF-GS55 £0.85

M5 12 5 MF-GS56 £0.85

M5 20 5 MF-GS58 £0.95

 
M6 6 5 MF-GS63 £0.75

M6 8 5 MF-GS64 £0.85

M6 10 5 MF-GS66 £0.85

M6
(x0.75 fine pitch)
10 1 MF-GS66F £2.50

M6 12 5 MF-GS67 £1.00

M6 16 5 MF-GS68 £1.00

M6 20 5 MF-GS69 £1.20

M6 25 5 MF-GS70 £1.30

M6 30 5 MF-GS71 £1.50

             
M8 8 5 MF-GS80 £1.00

25 MF-GS80/25 £4.00

M8 10 5 MF-GS81 £1.00

25 MF-GS81/25 £4.00

M8 12 5 MF-GS82 £1.20

25 MF-GS82/25 £4.80

M8 16 5 MF-GS84 £1.40

25 MF-GS84/25 £5.60

M8 20 5 MF-GS86 £1.50

25 MF-GS86/25 £6.00

           
M10 10 5 MF-GS101 £1.50

M10 12 5 MF-GS102 £1.50

M10 16 5 MF-GS104 £2.20

M10 20 5 MF-GS106 £2.40

             
     

 

 

Grub Screws 

UNC (Unified Coarse Thread)  - Steel 

(some sizes also in A2 stainless steel where stated)

Thread

Overall  Length (inches)

Socket size Pack Qty

MF Ref

Price   You can enter/change the number of items on the order form
 
2-56 1/8" 5 MF-GS100 £1.20

           
4-40 1/8" 5 MF-GS110 £1.20

4-40 1/4" 5 MF-GS111 £1.20

4-40 3/8" 5 MF-GS112 £1.20

4-40 1/2" 5 MF-GS113 £1.20

             
5-40 1/8" 5 MF-GS120 £1.20

5-40 5/16" 5 MF-GS123 £1.20

  Sorry - this item is temporarily out of stock  
5-40 1/2" 5 MF-GS125 £1.20

6-32 1/8" 5 MF-GS130 £1.20

6-32 1/4" 5 MF-GS132 £1.20

6-32 3/8" 5 MF-GS133 £1.20

6-32 1/2" 5 MF-GS134 £1.20

             
8-32 1/8" 5 MF-GS140 £1.50

8-32 1/4" 5 MF-GS142 £1.50

8-32 1/2" 5 MF-GS144 £1.50

8-32 1" 5 MF-GS146 £1.75

             
10-24 3/16" 5 MF-GS159 £1.50

10-24 1/4" 5 MF-GS160 £1.50

10-24 3/8" 5 MF-GS162 £1.50

10-24 1/2" 5 MF-GS163 £1.50

 
10-24
Stainless steel
1/4" 5 MF-GS160S £1.50

10-24
Stainless steel
3/8" 5 MF-GS162S £1.50

10-24
Stainless steel
1/2" 5 MF-GS163S £1.50

             
             
1/4"-20 1/4" 5 MF-GS145 £1.50

25 MF-GS145/25 £6.00

1/4"-20
Stainless Steel
1/4" 5 MF-GS145S £1.75

25 MF-GS145S/25 £7.00

1/4"-20 1/2" 5 MF-GS147 £1.50

25 MF-GS147/25 £6.00

1/4"-20 3/4" 5 MF-GS148 £1.50

25 MF-GS148/25 £6.00

1/4"-20 1" 5 MF-GS149 £1.50

25 MF-GS149/25 £6.00

             
             
             
5/16"-18
Stainless steel
5/16" 5 MF-GS155S £1.50

5/16"-18 3/4" 5 MF-GS153 £1.50

5/16"-18 1" 5 MF-GS154 £1.50

             
     

 

Grub Screws 

UNF (Unified Fine Thread)  - Black Steel (unless specified otherwise)

 
Thread

Overall  Length (inches)

Socket size Pack Qty

MF Ref

Price   You can enter/change the number of items on the order form
       
10-32 1/4" 5 MF-GS143F £1.20

10-32 3/8" 5 MF-GS144F £1.20

10-32
Stainless steel
3/8" 5 MF-GS144FS £2.00

10-32 1/2" 5 MF-GS145F £1.30

10-32 3/4" 5 MF-GS146F £1.50

10-32
Stainless steel
3/4" 5 MF-GS146FS £1.50

             
             
1/4"-28 3/16" 5 MF-GS1403F £1.50

1/4"-28
Stainless steel
3/16" 5 MF-GS1403FS £1.50

1/4"-28 1/4" 5 MF-GS1404F £1.50

1/4"-28
Stainless steel
1/4" 5 MF-GS1404FS £1.50

1/4"-28 3/8" 5 MF-GS1406F £1.50

1/4"-28 1/2" 5 MF-GS1408F £1.50

             
5/16"-24 1/4" 5 MF-GS51604F £1.50

5/16"-24
Plated
1/2" 5 MF-GS51608F £1.50

             
3/8"-24 1/2" 5 MF-GS3806F £1.50

             
     

   
 

 

Grub Screws 

BA (British Association thread)  - Steel 

Thread

Overall  Length (inches)

Socket size Pack Qty

MF Ref

Price   You can enter/change the number of items on the order form
  Sorry - this item is out of stock  
6BA 3/16" 5 MF-GS200 £2.50

  Sorry - this item is out of stock  
6BA 1/4" 5 MF-GS201 £2.50

6BA 3/8" 5 MF-GS203 £2.50

6BA 1/2" 5 MF-GS204 £2.50

           
  Sorry - this item is out of stock  
4BA 3/16" 5 MF-GS209 £1.75

  Sorry - this item is out of stock  
4BA 1/4" 5 MF-GS210 £1.75

  Sorry - this item is out of stock  
4BA 5/16" 5 MF-GS211 £2.00

  Sorry - this item is out of stock  
4BA 3/8" 5 MF-GS212 £2.00

  Sorry - this item is out of stock  
4BA 1/2" 5 MF-GS213 £2.50

4BA 3/4" 5 MF-GS215 £2.50

             
  Sorry - this item is out of stock  
2BA 1/4" 5 MF-GS229 £1.75

2BA 3/8" 5 MF-GS230 £2.00

  Sorry - this item is out of stock  
2BA 1/2" 5 MF-GS232 £2.00

2BA 3/4" 5 MF-GS234 £2.00

     

 

Looking for 0BA ? - Metric M6 is virtually identical and can usually be successfully used as a substitute in non-critical applications

Grub Screws 

BSW (Whitworth)  - Steel    

We currently have a limited range of this now rather scarce thread form, that will be extended soon. Please e mail us if the thread you require is not shown - we may be able to supply.
Dia

Overall  Length (inches)

Socket size Pack Qty

MF Ref

Price   You can enter/change the number of items on the order form
             
1/8" 1/8" 5 MF-GS291 £1.50

1/8" 3/16" 5 MF-GS292 £1.50

  Sorry - this item is temporarily out of stock  
1/8" 5/16" 5 MF-GS294 £1.50

1/8" 1/2" 5 MF-GS296 £1.75

             
5/32" 5/16" 5 MF-GS297 £1.50

             
3/16" 3/16" 5 MF-GS298 £1.50

3/16" 1/4" 5 MF-GS300 £1.50

3/16" 1/2" 5 MF-GS305 £1.50

             
1/4" 1/4" 5 MF-GS310 £1.50

1/4" 1/2" 5 MF-GS312 £1.50

             
3/8" 3/8" 5 MF-GS320 £1.50

             
     

 

Grub Screws 

BSF (Whitworth Fine)  - Steel    

We currently have a limited range of this now rather scarce thread form, that will be extended soon. Please e mail us if the thread you require is not shown - we may be able to supply.
Dia

Overall  Length (inches)

Socket size Pack Qty

MF Ref

Price   You can enter/change the number of items on the order form
1/4" 3/8" 5 MF-GS331 £1.95

1/4" 1/2" 5 MF-GS332 £1.95

1/4" 3/4" 5 MF-GS334 £1.95

 

Metric Grub Screw Boxed Kits

These grub screw kits are a handy selection of popular metric cup point sizes used in many hobby, household and engineering applications. Each kit contains sizes ranging from M2 to M6 plus the correct sized hex keys to drive them. We offer an option of a stainless steel kit and a black HT steel kit.

Each kit contains 10 each :

M2x3mm, M2x6mm, M2.5x4mm, M2.5x8mm, M3x4mm, M3x8mm, M4x4mm, M4x8mm, M5x5mm, M5x8mm, M6x6mm, M6x10mm,

Plus Hex keys:

0.9mm, 1.3mm, 1.5mm, 2.0mm, 2.5mm & 3.0mm A/F

Supplied in a high quality, UK manufactured plastic box with a snap close transparent lid which closes precisely so the contents won't get mixed up even if the box is inverted. Box measure 17 x 10 x 2cm.
Please note the box base colour may vary from picture above

       

 

 
 

Kit Description

Part ref

Price

   
           
 

Stainless Steel Kit

MF-GS1S

£12.00

 
           
 

HT Steel Kit (black)

MF-GS1B £12.00

 
           

 

If the size you require isn't listed please e mail us for a no-obligation quotation.

This page was last modified on : December 12, 2017

 
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