Boss Head (Product Code: SLE/CH/63) is the connector block that locks a clamp rod to the upright rod of a laboratory stand, usually at right angles, so clamps and holders can be set at any height. Two vee grooves in the die-cast aluminium alloy body seat round rods accurately, and two chrome-plated thumb screws hold each rod firmly. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, in small and large sizes, and is a core item in every lab stand clamp boss head kit supplied in India and international markets.
| Parameter | Detail |
|---|---|
| Body material | Die cast aluminium alloy |
| Rod seating | Two vee grooves in the body, accurate for a firm grip |
| Screws | Two chrome plated thumb screws |
| Sizes available | Small size; Large size |
Any clamp with a plain stem — a retort clamp, thermometer clamp or condenser clamp — needs a boss head to attach it to a stand. One groove sits on the vertical stand rod and the other takes the clamp stem; each has its own thumb screw, so the clamp can be raised, lowered or swung round without taking the whole assembly apart. When planning a practical, count one boss head for every clamp that will be on the stand.
For a secure set-up, tighten the screw on the stand rod first, then position and tighten the clamp stem. Arrange the boss head so its open side faces up, allowing the load to press the rod into the groove rather than away from it. Schools replacing lost or worn fittings often order boss heads with other lab equipment accessories in one enquiry.
ScienceLab is the brand of Jain Scientific Equipments Private Limited, based in Ambala, Haryana, which manufactures support-stand hardware alongside a broad range of teaching and laboratory apparatus. Our company profile describes the business in more detail.
Stands and clamps that are joined together with a boss head:
Browse all stand fittings in Chemistry Lab Equipment.
Should I order the small or the large size?
Choose the size that matches your stand rod and clamp stem diameters. Send us those two diameters through the contact page and we will recommend the right one.
How does it hold two rods at once?
The body has two vee grooves, each with its own chrome-plated thumb screw, so the stand rod and clamp stem are tightened independently.
Why vee grooves instead of round holes?
A vee seats a round rod along two lines of contact, which centres it accurately and gives a firm grip across a range of rod diameters.
Any tips for making it last?
Tighten by hand only — pliers can strip the thread in the aluminium body — and wipe chemical spills off the screws before storing.
How many boss heads does a class set need?
Usually one per clamp on each stand. Share your stand and clamp counts and we will size the order.
Do you handle tender and export orders?
Yes. We quote for schools, colleges and distributors throughout India and in international markets.
Send the size and number of boss heads you need via our contact page, or add them to the enquiry cart with the clamps and stands on your list.
Last updated: 24 September 2026