Ships within 8 hours (on average).
Ships within 8 hours (on average).
Free Shipping RM48 (2-3 days if ordered before 2pm) Upgrades available at checkout (e.g. tracked service and courier for time sensitive deliveries)
Call: 01242 522244 Email: sam@fixaball.co.uk Website: www.fixaball.co.uk for technical and sales queries
Fixaballsells lengths ofBSW, 1/4", Allen/ Hexagon Socket, Cap Head, Screw/ Bolt, High Tensile (12.9), BS 2470.
What is a socket cap screw/ bolt?
The, ‘Socket Cap Screw/ Allen Bolt,’ term is used to describe a enerthat is either fully or partially threaded. A screw is fully threaded and a bolt is partialy threaded. Some engineers may call them screws if the person uses the shorter length range of sizes. The thread stays the same length as the ener gets longer and the maximum length of thread is equal to 2.5 times the diameter (or thereabouts). ‘Socket,’ refers to the hexagon shaped indentation found on the top of the eners’ head. Here, you can use a hexagon key (Allen Key) to tighten and loosen the ener. 'Cap' refers to the cylindrical shaped head.
Orders placed before 2pm are dispatchedsame day (Mon-Fri).
Standard, is Royal Mail, 2nd Class (2-5 days, most likely 2 days). For a er delivery time, select 1st class or courier at checkout.
Please make your'No. of Items in Pack', 'Length'and'Quantity'of packs, selection from the drop down menus.
1/4" BSW Socket Cap Screw/ Bolt Lengths Available
(Fully Threaded -FT, Partially Threaded -PT)
1/4"-20x1/4",(FT) BSW SOCKET HEAD CAP SCREW RC39-43 SELF COLOUR |
1/4"-20x3/8",(FT) BSW SOCKET HEAD CAP SCREW RC39-43 SELF COLOUR |
1/4"-20x1/2",(FT) BSW SOCKET HEAD CAP SCREW RC39-43 SELF COLOUR |
1/4"-20x5/8",(FT) BSW SOCKET HEAD CAP SCREW RC39-43 SELF COLOUR |
1/4"-20x3/4",(FT) BSW SOCKET HEAD CAP SCREW RC39-43 SELF COLOUR |
1/4"-20x7/8",(FT) BSW SOCKET HEAD CAP SCREW RC39-43 SELF COLOUR |
1/4"-20x1",(FT) BSW SOCKET HEAD CAP SCREW RC39-43 SELF COLOUR |
1/4"-20x1 1/4",(FT) BSW SOCKET HEAD CAP SCREW RC39-43 SELF COLOUR |
1/4"-20x1 1/2",(PT) BSW SOCKET HEAD CAP SCREW RC39-43 SELF COLOUR |
1/4"-20x1 3/4",(PT) BSW SOCKET HEAD CAP SCREW RC39-43 SELF COLOUR |
1/4"-20x2",(PT) BSW SOCKET HEAD CAP SCREW RC39-43 SELF COLOUR |
1/4"-20x2 1/4",(PT) BSW SOCKET HEAD CAP SCREW RC39-43 SELF COLOUR |
1/4"-20x2 1/2",(PT) BSW SOCKET HEAD CAP SCREW RC39-43 SELF COLOUR |
1/4"-20x2 3/4",(PT) BSW SOCKET HEAD CAP SCREW RC39-43 SELF COLOUR |
1/4"-20x3",(PT) BSW SOCKET HEAD CAP SCREW RC39-43 SELF COLOUR |
1/4"-20x3 1/4",(PT) BSW SOCKET HEAD CAP SCREW RC39-43 SELF COLOUR |
1/4"-20x3 1/2",(PT) BSW SOCKET HEAD CAP SCREW RC39-43 SELF COLOUR |
Available Materials:High Tensile (12.9 Grade)- Black/ Self-Colour
Material/ Finish |
Appearance |
Level of Corrosion Resistance |
Typical Application |
High Tensile Steel (12.9) |
Self-Colour (black with no surface treatment) |
Low, without further surface treatment |
- No exposure to moisture - Often Greased/ Oiled to prevent oxidisation/ rusting |
UNITS OF MEASUREMENT FOR THREAD TYPES
British Standard Whitworth (BSW)
A thread form developed by Sir Joseph Whitworth in 1841. The thread form has rounded roots and crests, a thread angle of 55 degrees, the thread form is specified in BS 84: 1956
Image is for illustrative purposes only.
| Updated: 26th June 2025
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