Type AF High Friction Clamp
For applications where high frictional loads are encountered,
Lindapter has developed the high strength type AF, which offers
excellent frictional clamping performance. Cast from SG iron,
the AF is designed to be used with ASTM A325 Grade 5 or ASTM
A490 bolts if required, and allows significantly increased torques
to be applied. The profiled nose of type AF enables various tapers
of beam flange to be accommodated (maximum 10 degrees).
With the use of the type AFW adapter washer, the product can
be adapted to suit two differing conditions. Firstly, using the
washer as shown in diagram 1, the AF's recessed head can be filled
in to act in the same way as the flat top type B Lindapter. With
the washer inverted as shown in diagram 2, the larger head size
of ASTM A325 Grade 5 or ASTM A490 bolts can be captivated.
The increased torques necessary to achieve the type AF's elevated
performance require the use of a high strength location plate.
Special packing pieces are required with the type AF to enable
adjustment to differing beam flange thicknesses.
Material: SG Iron to BS EN 1563:1997
Standard Finish: Hot Dip Galvanised to BS EN ISO 1461:1999
| Product Code * |
Bolt Size (Z) |
Bolt Grade |
Torque (lb ft) |
Safe Working Loads
(5:1 Factor of Safety) |
| Frictional (lbs) Shot blast and painted
steelwork |
Frictional (lbs) Galvanised steelwork |
Tensile (lbs) |
| Per 2 Bolt
connection |
Per bolt |
| AF062 |
5/8" |
A325 Grade 5 |
177 |
1798 |
2248 |
3597 |
| AF062 |
5/8" |
A490 |
221 |
2473 |
2698 |
See Notes Below |
| AF075 |
3/4" |
A325 Grade 5 |
347 |
2922 |
3597 |
5901 |
| AF075 |
3/4" |
A490 |
477 |
4496 |
5620 |
See Notes Below |
* Add suffix S or M to product code to denote tail length
required.
NB. Frictional load figures are based on type AF and location
plates in hot dip galvanised finish to BS EN ISO 1461:1999
Hardened washer to ASTM F436 must be used.
In tensile loading the limiting factor is the bolt capacity.
Combined frictional and tensile loads must satisfy AISC LRFD
'Specification for Structural Joints using ASTM A325 or A490
Bolts' Section 4(b).
Product
Code * |
Dimensions (ins) |
T |
Width |
| Y |
X |
Tail Length V |
Type AF |
Type AF
with washer |
| Short |
Medium |
| AF062 |
1 3/8" |
1 15/32" |
5/16" |
19/32" |
7/8" |
1 1/16" |
1 29/32" |
| AF075 |
1 9/16" |
1 17/32" |
3/8" |
23/32" |
1" |
1 1/4" |
2 7/32" |
* Add suffix S or M to product code to denote tail length
required.
AFW Adapter Washer
Material: SG Iron to BS EN 1563:1997
Finish: Hot dip galvanised to BS EN ISO 1461:1999.
| Product Code |
Bolt Size Z |
Dimensions (ins) |
| Thickness T |
Size |
Hexagon A/F |
| AWF062 |
5/8" |
3/16" |
1 7/16" X 15/16" |
1 1/16" |
| AWF075 |
3/4" |
1/4" |
1 9/16" X 1 3/16" |
1 1/4" |
Location Plate Details
For the type AF, location plates or strips must be manufactured
from steel flat to ASTM A572 Grade 50 or equivalent strength.
| Bolt Size |
Bolt Hole Dia |
Plate Size |
Bolt Hole Centres |
Plate Thickness |
Min. Width of Location Strips |
| 5/8" |
11/16" |
Beam width
+ 4" |
Beam width
+ 11/16" |
5/8" |
4" |
| 3/4" |
13/16" |
Beam width
+ 5" |
Beam width
+ 13/16" |
3/4" |
7" |
Packings
These packings are for use with the High Friction Clamp only,
to adjust the clamp to meet differing fixing thicknesses.
Material: Mild Steel to BS EN 10025:1990
Finish: Hot Dip Galvanised to BS EN ISO 1461:1999.
Dimensions
| Product Code |
Bolt Size |
Y |
X |
T |
Width |
| AF062CW |
5/8" |
5/16" |
1 9/16" |
5/64" |
2" |
| AF075CW |
3/4" |
3/8" |
1 19/32" |
5/64" |
2 3/16" |
| AF062P1 |
5/8" |
5/16" |
1 21/32" |
3/16" |
2 1/16" |
| AF075P1 |
3/4" |
3/8" |
1 25/32" |
3/16" |
2 3/16" |
| AF062P2 |
5/8" |
5/16" |
1 21/32" |
3/8" |
2 1/16" |
| AF075P2 |
3/4" |
3/8" |
1 25/32" |
3/8" |
2 3/16" |
|