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Alvin Key Clamps are distributed countrywide from our extensive stocks. Alvin Key Clamps
are manufactured to the highest quality using the finest materials and the most modern plant and machinery.
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THE RANGE
| A2 |
|
 |
 |
| Tube Ø |
A |
B |
C |
D |
E |
F |
| 5 |
44 |
36 |
- |
- |
- |
- |
| 6 |
48 |
44 |
- |
- |
- |
- |
| 7 |
60 |
54 |
- |
- |
- |
- |
| 8 |
68 |
54 |
- |
- |
- |
- |
| 9 |
85 |
75 |
- |
- |
- |
- |
|
|
Provides 90° '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.
|
| A3 |
|
 |
 |
| Tube Ø |
A |
B |
C |
D |
E |
F |
| 5 |
- |
- |
- |
- |
- |
- |
| 6 |
54 |
73 |
- |
- |
- |
- |
| 7 |
63 |
89 |
- |
- |
- |
- |
| 8 |
68 |
102 |
- |
- |
- |
- |
| 9 |
- |
- |
- |
- |
- |
- |
|
|
Variable angle clamp, tubes can be connected between angles of 30° to 60°. 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.
|
| A4 |
|
 |
 |
| Tube Ø |
A |
B |
C |
D |
E |
F |
| 5 |
88 |
44 |
- |
- |
- |
- |
| 6 |
96 |
48 |
- |
- |
- |
- |
| 7 |
120 |
60 |
- |
- |
- |
- |
| 8 |
136 |
68 |
- |
- |
- |
- |
| 9 |
170 |
85 |
- |
- |
- |
- |
|
|
Provides a 90° '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).
|
| A6 |
|
 |
 |
| Tube Ø |
A |
B |
C |
D |
E |
F |
| 5 |
44 |
- |
- |
- |
- |
- |
| 6 |
48 |
- |
- |
- |
- |
- |
| 7 |
60 |
- |
- |
- |
- |
- |
| 8 |
68 |
- |
- |
- |
- |
- |
| 9 |
86 |
- |
- |
- |
- |
- |
|
|
This is a 90° 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 90° corner.
|
| A7 |
|
 |
 |
| Tube Ø |
A |
B |
C |
D |
E |
F |
| 5 |
- |
- |
- |
- |
- |
- |
| 6 |
90 |
- |
- |
- |
- |
- |
| 7 |
106 |
- |
- |
- |
- |
- |
| 8 |
120 |
- |
- |
- |
- |
- |
| 9 |
- |
- |
- |
- |
- |
- |
|
|
Two tubes can be joined with an angle range of between 105° - 165°. 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.
|
| A8 |
|
 |
 |
| Tube Ø |
A |
B |
C |
D |
E |
F |
| 5 |
64 |
- |
- |
- |
- |
- |
| 6 |
90 |
- |
- |
- |
- |
- |
| 7 |
96 |
- |
- |
- |
- |
- |
| 8 |
96 |
- |
- |
- |
- |
- |
| 9 |
125 |
- |
- |
- |
- |
- |
|
|
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.
|
| A9 |
|
 |
 |
| Tube Ø |
A |
B |
C |
D |
E |
F |
| 5 |
- |
- |
- |
- |
- |
- |
| 6 |
78 |
20 |
- |
- |
- |
- |
| 7 |
78 |
20 |
- |
- |
- |
- |
| 8 |
80 |
22 |
- |
- |
- |
- |
| 9 |
- |
- |
- |
- |
- |
- |
|
|
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.
|
| A10 |
|
 |
 |
| Tube Ø |
A |
B |
C |
D |
E |
F |
| 5 |
63 |
48 |
81 |
7 |
4 |
- |
| 6 |
65 |
48 |
84 |
7 |
4 |
- |
| 7 |
75 |
51 |
98 |
9 |
6 |
- |
| 8 |
85 |
54 |
112 |
11 |
6 |
- |
| 9 |
96 |
60 |
130 |
11 |
6 |
- |
|
|
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.
|
| A12 |
|
 |
 |
| Tube Ø |
A |
B |
C |
D |
E |
F |
| 5 |
112 |
76 |
64 |
76 |
11 |
8 |
| 6 |
128 |
88 |
80 |
88 |
14 |
10 |
| 7 |
144 |
102 |
80 |
88 |
14 |
10 |
| 8 |
156 |
114 |
92 |
88 |
14 |
10 |
| 9 |
165 |
126 |
98 |
130 |
14 |
10 |
|
|
Provides a structural base plate for the support of a vertical post typically for a guardrail.
Two socket set screws give a rigid structural fixing. Recommended that the fixing down bolts be in line with the applied
load.(i.e 90° to the rails)
|
| A14 |
|
 |
 |
| Tube Ø |
A |
B |
C |
D |
E |
F |
| 5 |
- |
- |
- |
- |
- |
- |
| 6 |
104 |
64 |
68 |
44 |
98 |
14 |
| 7 |
114 |
64 |
74 |
50 |
112 |
14 |
| 8 |
120 |
64 |
90 |
60 |
124 |
14 |
| 9 |
- |
- |
- |
- |
- |
- |
|
|
Base for vertical posts for side mounting. Posts stand off from structure. Tube cannot
pass through this clamp. Access to top fixing hole restricted, a threaded stud type bolt projecting a max.
25mm from structure needs to be fixed first.
|
| A15 |
|
 |
 |
| Tube Ø |
A |
B |
C |
D |
E |
F |
| 5 |
- |
- |
- |
- |
- |
- |
| 6 |
63 |
25 |
71 |
11 |
24 |
6 |
| 7 |
72 |
23 |
82 |
11 |
28 |
6 |
| 8 |
78 |
23 |
86 |
11 |
31 |
6 |
| 9 |
- |
- |
- |
- |
- |
- |
|
|
Provides a structural base plate to a vertical post that is required to be side mounted.
This clamp is virtually flush to structure it is being fixed to. The tube does not pass through the clamp.
|
| A16 |
|
 |
 |
| Tube Ø |
A |
B |
C |
D |
E |
F |
| 5 |
- |
- |
- |
- |
- |
- |
| 6 |
114 |
64 |
24 |
66 |
98 |
14 |
| 7 |
114 |
64 |
27 |
76 |
104 |
14 |
| 8 |
120 |
64 |
30 |
86 |
114 |
14 |
| 9 |
- |
- |
- |
- |
- |
- |
|
|
Provides a structural base plate as the A14, should not be used for heavy duty applications.
|
| A17 |
|
 |
 |
| Tube Ø |
A |
B |
C |
D |
E |
F |
| 5 |
- |
- |
- |
- |
- |
- |
| 6 |
126 |
125 |
- |
- |
- |
- |
| 7 |
140 |
135 |
- |
- |
- |
- |
| 8 |
140 |
138 |
- |
- |
- |
- |
| 9 |
- |
- |
- |
- |
- |
- |
|
|
A ground socket that is cast into concrete and is flush with the finished ground level.
Allows posts to be inserted and retained with a locking set screw. Posts can be easily removed at any time.
|
| A18 |
|
 |
 |
| Tube Ø |
A |
B |
C |
D |
E |
F |
| 5 |
44 |
- |
- |
- |
- |
- |
| 6 |
48 |
- |
- |
- |
- |
- |
| 7 |
60 |
- |
- |
- |
- |
- |
| 8 |
68 |
- |
- |
- |
- |
- |
| 9 |
- |
- |
- |
- |
- |
- |
|
|
Provides a three way 90° corner joint. Used frequently for a top rail 90° turn where a post is present.
Compliment this with A20 for a lower rail. Also used for corner joints on structures such as work benches, tables etc.
|
| A20 |
|
 |
 |
| Tube Ø |
A |
B |
C |
D |
E |
F |
| 5 |
44 |
- |
- |
- |
- |
- |
| 6 |
48 |
- |
- |
- |
- |
- |
| 7 |
60 |
- |
- |
- |
- |
- |
| 8 |
68 |
- |
- |
- |
- |
- |
| 9 |
85 |
- |
- |
- |
- |
- |
|
|
A 90° corner joint, tube passes through the central hole. Used frequently for a lower rail(s).
Often used in conjunction with the A18.
|
| A21 |
|
 |
 |
| Tube Ø |
A |
B |
C |
D |
E |
F |
| 5 |
- |
- |
- |
- |
- |
- |
| 6 |
58 |
- |
- |
- |
- |
- |
| 7 |
73 |
- |
- |
- |
- |
- |
| 8 |
81 |
- |
- |
- |
- |
- |
| 9 |
- |
- |
- |
- |
- |
- |
|
|
Generally used in pairs (as shown). Allows angles between 90° - 180°. Used to change direction of
rails in the same plane. Requires a central tube at the point of angle change. Consider the A7 as an alternative for the angle change.
|
| A22 |
|
 |
 |
| Tube Ø |
A |
B |
C |
D |
E |
F |
| 5 |
88 |
- |
- |
- |
- |
- |
| 6 |
96 |
- |
- |
- |
- |
- |
| 7 |
120 |
- |
- |
- |
- |
- |
| 8 |
136 |
- |
- |
- |
- |
- |
| 9 |
175 |
- |
- |
- |
- |
- |
|
|
Used for a 90° connection of a lower rail(s) to an intermediate vertical post, the vertical
post must remain continuous while the rail is joined in each side of the clamp. Usually complimented with the A4 when used for guardrailing.
|
| A23 |
|
 |
 |
| Tube Ø |
A |
B |
C |
D |
E |
F |
| 5 |
- |
- |
- |
- |
- |
- |
| 6 |
146 |
- |
- |
- |
- |
- |
| 7 |
178 |
- |
- |
- |
- |
- |
| 8 |
216 |
- |
- |
- |
- |
- |
| 9 |
- |
- |
- |
- |
- |
- |
|
|
Variable angle clamp enables tubes to be connected between angles 30° - 45°. Used for angled lower rail(s)
joint to a vertical post on stairs. A3 can be used in association for top rail connection. A46 swivel clamp is an alternative.
|
| A24 |
|
 |
 |
| Tube Ø |
A |
B |
C |
D |
E |
F |
| 5 |
88 |
44 |
- |
- |
- |
- |
| 6 |
96 |
48 |
- |
- |
- |
- |
| 7 |
120 |
60 |
- |
- |
- |
- |
| 8 |
136 |
68 |
- |
- |
- |
- |
| 9 |
176 |
88 |
- |
- |
- |
- |
|
|
Frequently used to tie uprights with horizontal tubes in three directions all at 90° to the upright.
|
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