Why Kee Klamp®?
Kee Klamp® fittings are the gold standard for constructing durable and versatile structures. Their design combines simplicity, strength, and reliability, making them a trusted choice for professionals worldwide.
The Kee Klamp® Tubular Fittings
The simple but effective engineering principle of the Kee Klamp® tubular fittings is the foundation of the most versatile tube connection system available. There are many variations of tubular fittings to suit wide-ranging applications, providing the versatility to achieve virtually any structural configuration.
Kee Klamp® tubular fittings are generally made from cast iron* and are manufactured to the requirements of EN 1562 & EN 1563 and galvanized to the requirements of EN ISO 1461. A range of Components to suit seven sizes of tube is available. A simple hexagon key is the only tool required to create a strong, rigid joint. A recessed grub screw tightened by the hexagon key firmly locks the tube into the Component. The grub screw is generally manufactured in case-hardened steel* and benefits from Kee Koat® protection against corrosion. This, combined with the ThredKoat® (patented) factory-applied coating for the threaded recesses, ensures that KEE KLAMP tubular fittings achieve longer life and better corrosion resistance.
A Kee Klamp® Component (size 5 to 9) can support an axial load of *900 Kg (2000 lbs) per grub screw with the grub screw tightened to a torque of 39 Nm (29 lbs. ft.).
*Materials used can vary according to application. Please refer to the manufacturer for detailed specifications.
Swivel Fittings
Types F50, M50, MH50, M51, MH51, M52, M53, and M58 are known as swivel fittings and can be assembled as Types C50, CH50, C51, C52, C53, and C58 or supplied as separate items.
They are frequently used for bracing but can also overcome problems where joints are required at angles other than those achieved by fixed-angle fittings. For economical use of tubing, when making ‘C’ fittings, or combination fittings, Types F50 (sizes 5 to 9 only) can be combined with different sizes of Types M50, MH50, M51, MH51, M52, M53, and M58. F50-4 and M50-4 will only combine with each other.
WARNING!: An entire structure should not be constructed from swivel fittings, as they would not provide sufficient stability or rigidity in the structure. Types M50, MH50, M51, M52, M53, and M58 can also be used separately to secure various in-fill panels. These fittings are not designed to take bending moments.
The Slope Range (86–89)
The slope range of fittings consists of fitting Types 86, 87, 88, and 89. These fittings are designed to facilitate in-line railings with vertical posts on slopes with angles between 0° and 11°. They can be used to construct railings on access ramps for people with disabilities when used in conjunction with the Kee Lite® Type L160 fitting.
To see the Kee Lite® component selection, please click below.
The PGR Range (90–95)
These are known as Pedestrian Guardrail (PGR) fittings and are used as an alternative to Types 10, 15, 25, and 26 when the site is not straight and level. There is a sufficient play within the fitting to negotiate a slope up to 7 degrees or a radius greater than 6 meters when the uprights are 2-meter centers using a straight tube. They also allow damaged rails to be removed without dismantling the adjacent structure. The 90 to 95 range of fittings is available in size 8.
The Slope Range (320-427)
This slope range of fittings is designed specifically for use on steeper gradients and consists of fitting Types 320, 321, 325, 326, and 427. These fittings are designed to facilitate in-line railings with vertical posts where the slope is greater than 30°.
Specifying Kee Klamp Tubular Fittings
The information on tubular fittings on this site is comprehensive and easy to use because of the coding system we have adopted.
Diagrams are shown for each Component, showing the entry of the tube, a table of dimensions, and a definition of use adjacent to its appropriate Type number (10, 15, 20, 25, etc.).
Alongside the Type, the number is a code (4, 5, 6, 7, etc.) relating to the outside diameter of the tube for which the Kee Klamp tubular fitting had been designed. The relationship between the KEE KLAMP tube reference and standard tube outside diameter is explained in the aforementioned chart.
Kee Klamp® Tube Size | Tube diameter mm OD | Nominal bore mm |
|---|---|---|
4 | 21.3 | 15 |
5 | 26.9 | 20 |
6 | 33.7 | 25 |
7 | 42.4 | 32 |
8 | 48.3 | 40 |
9 | 60.3 | 50 |
*Nominal bore is an arbitrary dimension because the bore varies with the wall thickness of the tube.
Example: (1) A 10-7 is a Type 10 Kee Klamp® Component with both sockets designed to accept a tube that has an outside diameter of 42.4mm or 1 11/16″ (1 1/4″ Nominal tube Size). (2) A 25-9 is a Type 25 Kee Klamp® Component with all three sockets designed to accept a tube that has an outside diameter of 60.3mm or 2 3/8″ (2″ N.P.S.).
Where more than one tube reference is shown alongside a particular Type number, it indicates that the individual sockets are designed to accept different tube sizes. In a multi-digit code number, the first figure relates to the ‘A’ socket and the second to the ‘B’ socket. Example (3) A 45-76 is a Type 45 KEE KLAMP Component with an ‘A’ socket accepting a tube that has an outside diameter of 42.4mm or 1 11/16″ and a ‘B’ socket accepting a tube/pipe that has an outside diameter of 33.7mm or 1 11/32″.
While BMF Safety can give a general guidance relating to the use of each Kee Klamp® Component detailed on this site, the nature of the product means that the ultimate responsibility for selecting the correct fitting for an application must lie with the customer.
The customer should also ensure that the existing structure to which the Kee Klamp® construction is being secured, is of sufficient strength to support both the self-weight of the Kee Klamp® construction and the imposed loads applied, including wind loads, snow loads, and any other superimposed loads.
Pipe Size Diagram
Metric Horizontal Beam Load Table
For uneven load distributions or single spans, the required tube size must be determined by standard bending moment calculations assuming a Kee Klamp® joint to give a simply supported beam. The table shown below only indicates the safe load uniformly distributed, in kg, that may be carried per shelf consisting of front and back tubes when used as continuous beams. Recommended set screw torque: 39 Nm.
At loads greater than 900 kg, consideration must be given to the grub screw slip.
Load table (Kg) – Horizontal Beams
Horizontal tube load capacity provides the uniformly distributed loads that can be supported between upright posts assuming that the load is supported by two tubes. These loads are calculated based on the maximum bending movement for the tube.
Span (m) | Size 5 | Size 6 | Size 7 | Size 8 | Size 9 |
|---|---|---|---|---|---|
0.5 m | 540 kg | 1060 kg | 1750 kg | 2380 kg | 4000 kg |
0.6 m | 435 kg | 850 kg | 1407 kg | 1870 kg | 3250 kg |
0.7 m | 375 kg | 730 kg | 1207 kg | 1595 kg | 2760 kg |
0.8 m | 330 kg | 645 kg | 1063 kg | 1385 kg | 2420 kg |
0.9 m | 295 kg | 579 kg | 946 kg | 1230 kg | 2160 kg |
1.0 m | 265 kg | 525 kg | 850 kg | 1110 kg | 1950 kg |
1.1 m | 240 kg | 478 kg | 770 kg | 1013 kg | 1775 kg |
1.2 m | 219 kg | 438 kg | 705 kg | 930 kg | 1625 kg |
1.3 m | 202 kg | 403 kg | 651 kg | 858 kg | 1497 kg |
1.4 m | 187 kg | 373 kg | 604 kg | 796 kg | 1387 kg |
1.5 m | 175 kg | 347 kg | 564 kg | 741 kg | 1290 kg |
1.6 m | – | 325 kg | 529 kg | 693 kg | 1205 kg |
1.7 m | – | 306 kg | 499 kg | 650 kg | 1129 kg |
1.8 m | – | 290 kg | 472 kg | 613 kg | 1061 kg |
1.9 m | – | 277 kg | 448 kg | 581 kg | 999 kg |
2.0 m | – | 268 kg | 427 kg | 553 kg | 987 kg |
2.1 m | – | – | 408 kg | 528 kg | 944 kg |
2.2 m | – | – | 391 kg | 505 kg | 855 kg |
2.3 m | – | – | 376 kg | 485 kg | 818 kg |
2.4 m | – | – | 362 kg | 467 kg | 785 kg |
2.5 m | – | – | 349 kg | 450 kg | 755 kg |
2.6 m | – | – | – | 434 kg | 728 kg |
2.7 m | – | – | – | 419 kg | 703 kg |
2.8 m | – | – | – | 405 kg | 680 kg |
2.9 m | – | – | – | – | 659 kg |
3.0 m | – | – | – | – | 639 kg |
3.1 m | – | – | – | – | 620 kg |
3.2 m | – | – | – | – | 603 kg |
3.3 m | – | – | – | – | 588 kg |
3.4 m | – | – | – | – | 575 kg |
3.5 m | – | – | – | – | 564 kg |
The table reflects a safety factor of 1.67:1
Metric Upright Beam Load Table
This table only indicates the safe load, in kg., that may be carried between the above restraints by single tubes to EN 10255 when used as uprights. Loads listed under the ‘A’ columns refer to those loads that are obtainable according to schematic ‘A,’ and loads listed under ‘B’ columns refer to those loads that are obtainable according to schematic ‘B.’ Schematic ‘B’ details a racking system that is mechanically affixed to the surface on which it stands, whereas schematic ‘A’ details a free-standing racking system. Recommended set screw torque: 39 Nm
Load table (Kg) – Unfixed Uprights
Span (m) | Size 5 | Size 6 | Size 7 | Size 8 | Size 9 |
|---|---|---|---|---|---|
0.3 m | 1860 kg | 3086 kg | 4192 kg | 4916 kg | 7250 kg |
0.4 m | 1600 kg | 2810 kg | 3910 kg | 4638 kg | 6930 kg |
0.5 m | 1360 kg | 2534 kg | 3628 kg | 4360 kg | 6610 kg |
0.6 m | 1140 kg | 2258 kg | 3346 kg | 4082 kg | 6290 kg |
0.7 m | 940 kg | 1982 kg | 3064 kg | 3804 kg | 5970 kg |
0.8 m | 775 kg | 1706 kg | 2782 kg | 3526 kg | 5650 kg |
0.9 m | 640 kg | 1471 kg | 2500 kg | 3384 kg | 5330 kg |
1.0 m | 540 kg | 1269 kg | 2235 kg | 3248 kg | 5010 kg |
1.1 m | – | 1092 kg | 1995 kg | 2970 kg | 4690 kg |
1.2 m | – | 937 kg | 1779 kg | 2692 kg | 4370 kg |
1.3 m | – | – | 1587 kg | 2414 kg | 4050 kg |
1.4 m | – | – | 1417 kg | 2169 kg | 3730 kg |
1.5 m | – | – | 1265 kg | 1954 kg | 3410 kg |
1.6 m | – | – | 1130 kg | 1764 kg | 3130 kg |
1.7 m | – | – | – | 1602 kg | 2890 kg |
1.8 m | – | – | – | 1462 kg | 2680 kg |
1.9 m | – | – | – | 1342 kg | 2480 kg |
2.0 m | – | – | – | 1242 kg | 2300 kg |
2.1 m | – | – | – | – | 2120 kg |
2.2 m | – | – | – | – | 1950 kg |
2.3 m | – | – | – | – | 1800 kg |
2.4 m | – | – | – | – | 1650 kg |
The table reflects a safety factor of 2:1.
Load table (Kg) – Fixed uprights
Span (m) | Size 5 | Size 6 | Size 7 | Size 8 | Size 9 |
|---|---|---|---|---|---|
0.3 m | 1720 kg | 2950 kg | 4038 kg | 4783 kg | 7044 kg |
0.4 m | 1435 kg | 2617 kg | 3703 kg | 4446 kg | 6661 kg |
0.5 m | 1150 kg | 2284 kg | 3368 kg | 4109 kg | 6278 kg |
0.6 m | 910 kg | 1951 kg | 3033 kg | 3772 kg | 5895 kg |
0.7 m | 725 kg | 1618 kg | 2690 kg | 3435 kg | 5512 kg |
0.8 m | 590 kg | 1348 kg | 2363 kg | 3098 kg | 5129 kg |
0.9 m | 480 kg | 1128 kg | 2028 kg | 2761 kg | 4746 kg |
1.0 m | – | 948 kg | 1752 kg | 2424 kg | 4363 kg |
1.1 m | – | 798 kg | 1524 kg | 2134 kg | 3980 kg |
1.2 m | – | – | 1340 kg | 1884 kg | 3597 kg |
1.3 m | – | – | 1188 kg | 1668 kg | 3253 kg |
1.4 m | – | – | 1066 kg | 1484 kg | 2951 kg |
1.5 m | – | – | – | 1328 kg | 2681 kg |
1.6 m | – | – | – | – | 2441 kg |
1.7 m | – | – | – | – | 2226 kg |
1.8 m | – | – | – | – | 2032 kg |
1.9 m | – | – | – | – | 1857 kg |
2.0 m | – | – | – | – | 1697 kg |
2.1 m | – | – | – | – | 2120 kg |
2.2 m | – | – | – | – | 1950 kg |
2.3 m | – | – | – | – | 1800 kg |
2.4 m | – | – | – | – | 1650 kg |
The table reflects a safety factor of 2:1.