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.
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.
| 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 |
|
|
|
|
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.
| Tube |
Ø |
A |
B |
C |
D |
E |
F |
| 6 |
33.7 |
54 |
73 |
|
|
|
|
| 7 |
42.4 |
63 |
89 |
|
|
|
|
| 8 |
48.3 |
68 |
102 |
|
|
|
|
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).
| 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 |
|
|
|
|
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.
| 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 |
|
|
|
|
|
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.
| Tube |
Ø |
A |
B |
C |
D |
E |
F |
| 6 |
33.7 |
90 |
|
|
|
|
|
| 7 |
42.4 |
106 |
|
|
|
|
|
| 8 |
48.3 |
120 |
|
|
|
|
|
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.
| 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 |
|
|
|
|
|
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.
| Tube |
Ø |
A |
B |
C |
D |
E |
F |
| 6 |
33.7 |
78 |
20 |
|
|
|
|
| 7 |
42.4 |
78 |
20 |
|
|
|
|
| 8 |
48.3 |
80 |
22 |
|
|
|
|
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.
| Tube |
Ø |
A |
B |
C |
D |
E |
F |
| 5 |
26.9 |
63 |
48 |
81 |
7 |
4 |
|
| 6 |
33.7 |
65 |
48 |
84 |
7 |
4 |
|
| 7 |
42.4 |
75 |
51 |
98 |
9 |
6 |
|
| 8 |
48.3 |
85 |
54 |
112 |
11 |
6 |
|
| 9 |
60.3 |
96 |
60 |
130 |
11 |
6 |
|
