Screw Manufacturer,Supplier and Exporter in India
Product Code : EL-MWLE-13079
Jlab Export is a leading Screw Manufacturer,and suppliers in India
A step up from the 6 mm size, this cross-head screw measures 8 mm across the thread and 4 cm in length. The extra thickness and length put more thread into the work. That suits brackets, rails and frame joints that a small screw would not hold well. Packs contain 100 screws of this one size.
Technical Details
| Head | Cross-head drive |
| Diameter | 8 mm |
| Length | 4 cm |
| Pack quantity | Pack of 100 |
| Minimum order quantity | 10 packs |
| Dispatch time | Usually 3–5 working days |
| Manufacturer | JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India |
Lab Exercises in Screw Fixing
Fixing a metal bracket is a good first exercise in marking and drilling. Students lay the bracket out, mark the hole centre with a Scriber and dot it with the Punch Tool so the drill point does not wander. They drill a clearance hole through the bracket, a pilot hole in the base, and then drive the screw home.
Teachers can use the same job to compare drive types. Students drive one cross-head screw and one slotted screw with drivers from the Screwdrivers set and note which one slips more as the screw tightens.
Frequently Asked Questions
How do I measure the size of this screw?
Take the diameter over the thread crests with a caliper, and the length from the point to the underside of the head. A countersunk head is counted in the length. For this screw those figures are 8 mm and 4 cm.
What clearance hole should the fixed part have?
Drill the part being fixed a little larger than 8 mm so the screw passes through freely. The thread then grips only in the base material, and the head pulls the two parts tight together.
Can these screws go into wall plugs?
Yes, with a plug made for that screw size. The plug must be larger than the screw so the thread spreads it, for example the 10 mm Fisher rather than the 8 mm one.
Why choose a cross-head over a slotted head?
A cross recess locates the driver point in the centre of the head. The bit stays put instead of skating across the work, as a slotted driver often does. It also suits drill drivers and the push action of a spiral ratchet screwdriver.
Other Screw Sizes and Drivers
- Screw (6 mm x 3 cm)
- Screw (10 mm x 5 cm)
- Yankee Screwdriver (with cross-head and flat bits)
- Drill Bit Set
For a quote, use Add To Cart or send us a message through the contact page.
Last updated: 5 November 2026
