Box End Spanner Set Manufacturer,Supplier and Exporter in India
Product Code : EL-WT-12960
Jlab Export is a leading Box End Spanner Set Manufacturer,and suppliers in India
A box end, or ring, spanner closes right round a nut. The load is spread over all its flats, so the spanner takes more force before it slips. This set has 11 drop-forged, chromed ring spanners in metric sizes from 6 x 7 mm to 30 x 32 mm.
Specifications
| Spanner type | Ring (box) end at both ends |
| Unit | Millimetre (metric) |
| Sizes | 6 x 7, 8 x 9, 10 x 11, 12 x 13, 14 x 15, 16 x 17, 18 x 19, 20 x 22, 21 x 23, 24 x 27, 30 x 32 mm |
| Pieces | 11 |
| Material | Drop forged, chromed |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 4–6 working days |
| Manufacturer | JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India |
Workshop Exercises with Ring Spanners
Trainees often meet the ring spanner on a flanged joint. They bolt two flanges or plates together and hold each bolt head with one ring while turning the nut with another. The bolts are tightened in a cross pattern in two or three passes. The last pass can be made with the Digital Torque Wrench set to the value the teacher gives.
For dismantling practice, a painted or rusted nut is broken loose with the ring end. It is then run off with an open jaw from the Open End Spanner Set, which has the same eleven metric sizes. Holding the work in a Bench Vice leaves both hands free for the spanners.
Frequently Asked Questions
What is the difference between a box end and an open end spanner?
A box end has a closed ring that fits over the nut, while an open end has a jaw that slides on from the side. The ring holds better on a tight nut but needs clear space above the fastener.
Can a ring spanner be used on a nut on a pipe or a long rod?
Only if the ring can be passed over the end. On a pipe union, or a nut halfway along a long rod, use an open jaw instead. Ring spanners suit bolt heads and nuts with space above them.
Why tighten flange bolts in a cross pattern?
Tightening opposite bolts in turn pulls a flange or cover down evenly. Working round in a circle can tilt it, leaving one side tight and the other gapped. Two or three passes, each a little tighter, give the most even joint.
How should a ring spanner be held on a stuck nut?
Push the ring fully down over the nut, keep the spanner square to it and pull with steady force. Do not hammer the handle or slip a pipe over it, as the extra load can round the nut or bend the spanner.
Other Ring and Socket Tools
- Double Ended Spanner (eight deep offset ring spanners)
- Socket With Ratchet Handle Set (metric and inch sockets with a ratchet handle)
- Straight Ratchet Ring Spanner Set (inch ratchet rings)
For a quote, use Add To Cart or send us a message through the contact page.
Last updated: 6 November 2026