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Fisher Alvin Key Clamps

Key Clamps

Alvin Key Clamps are distributed worldwide from our extensive stocks. All Fisher Alvin products are manufactured to the highest quality using the finest materials and the most modern plant and machinery. Fisher Alvin has been manufacturing Alvin key clamps for over fifty years.

Please note that our ‘stock tube’ is of a galvanised finish, the black tube is shown for illustrative purposes only, we do offer a powder coating option if this is required.
A2 - Key Clamps
Provides 90º ‘T’ connection between two tubes. Used for the joint between end post and lower rail(s) when handrail is straight and level. Also for a top ‘T’ joint on a guardrail. Cannot join tube in top of ‘T’, use the A4 when this is required.
A2 - Technical Drawing
Tube Ø A B C D E F
5 26.9 44 36        
6 33.7 48 44        
7 42.4 60 54        
8 48.3 68 64        
9 60.3 85 75        
Please select Tube QTY
A3 - Key Clamps
Variable angle clamp, tubes can be connected between angles of 30º to 60º. Use for an angled top rail joint to vertical post on stairs. Used in conjunction with A23 for the lower rail(s). Can be used for diagonal braces for racking etc.
A3 - Technical Drawing
Tube Ø A B C D E F
6 33.7 54 73        
7 42.4 63 89        
8 48.3 68 102        
Please select Tube QTY
A4 - Key Clamps
Provides a 90º ‘T’ connection between two tubes. Used for the joint between a top rail and a vertical post. Allows tubes to be joined in the top part of the ‘T’. When used in guardrailing the A22 will compliment this for lower rail(s).
A4 - Technical Drawing
Tube Ø A B C D E F
5 26.9 88 44        
6 33.7 96 48        
7 42.4 120 60        
8 48.3 136 68        
9 60.3 170 85        
Please select Tube QTY
A6 - Key Clamps
This is a 90º elbow joint. Used frequently for the termination of the top rail to the last post of a handrail. Also used for turning the rails around a 90º corner.
A6 - Technical Drawing
Tube Ø A B C D E F
5 26.9 44          
6 33.7 48          
7 42.4 60          
8 48.3 68          
9 60.3 86          
Please select Tube QTY
Fisher Alvin Key Clamps
A7 - Key Clamps
Two tubes can be joined with an angle range of between 105º - 165º. Joins the angled rail from a ramp or steps to level rails on a landing. Starts an angled rail from top of a first post. Can be used for obtuse angle change in a handrail.
A7 - Technical Drawing
Tube Ø A B C D E F
6 33.7 90          
7 42.4 106          
8 48.3 120          
Please select Tube QTY
A8 - Key Clamps
Provides a rigid joint for two tubes of the same diameter. Joints to be 150mm to the nearest support. Do not use for joining two tubes subject to extreme loads, i.e. a vertical post member supporting a guardrail. Use A9 for a streamline joint.
A8 - Technical Drawing
Tube Ø A B C D E F
5 26.9 64          
6 33.7 90          
7 42.4 96          
8 48.3 96          
9 60.3 125          
Please select Tube QTY
A9 - Key Clamps
Provides a streamline flush joint in two tubes of the same dia. with a max. wall thickness 3.2 mm. Joints to be 150mm to the nearest support. Not for joining tubes that are subject to extreme loads, or where a direct tensile load is applied.
A9 - Technical Drawing
Tube Ø A B C D E F
6 33.7 78 20        
7 42.4 78 20        
8 48.3 80 22        
Please select Tube QTY
A10 - Key Clamps
A four holed plate providing a rigid fixing for handrails that terminate on walls. Ideal for securing garment railing structures to ceilings etc. Not to be used as structural fixings for supporting a vertical post on guardrails. Use A12 for this.
A10 - Technical Drawing
Tube Ø A B C D E F
Please select Tube QTY
Fisher Alvin Key Clamps
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