This option is used to define mesh-independent fasteners.
Products: ABAQUS/Standard ABAQUS/Explicit
Type: Model data
Level: Part Part Instance Assembly
Set this parameter equal to the name of the fastener interaction.
Set this parameter equal to the name of the property to be used with this fastener definition.
This parameter is applicable only when the fastener is modeled using connector elements.
If the connector elements are defined explicitly, set this parameter equal to the name of the element set containing the connector elements. If the connector elements are to be generated internally by ABAQUS, set this parameter equal to an empty element set name.
Use this parameter along with the ELSET parameter if internally generated connector elements are to be used to model the fastener. Use this parameter without the ELSET parameter if internally generated rigid beam MPCs are to be used to model the fastener.
Set this parameter equal to the name of the node set containing the reference nodes for this fastener definition.
Set ADJUST ORIENTATION=YES (default) to have ABAQUS adjust the user-defined orientation such that the local 
-axis for each fastener is normal to the surface that is closest to the reference node for that fastener.
Set ADJUST ORIENTATION=NO to define the local directions precisely.
Set this parameter equal to the number of layers for each fastener. If this parameter is omitted and no surface is specified by the user or a single surface is specified by the user, ABAQUS will form the maximum possible number of layers for each fastener.
This parameter is ignored if multiple surfaces are specified on the data lines.
Set this parameter equal to the name of an orientation definition (see “Orientations,” Section 2.2.5 of the ABAQUS Analysis User's Manual) that defines the orientation of the fastener. If this parameter is omitted, the orientation of each fastener is determined from the default local directions of the surface (see “Conventions,” Section 1.2.2 of the ABAQUS Analysis User's Manual) that is closest to the reference node for that fastener.
Set this parameter equal to the maximum distance from the projection point on a connected surface within which the nodes on that surface must lie to contribute to the motion of the projection point. If this parameter is omitted, ABAQUS will compute a default value of the radius of influence internally, based on the fastener diameter and the surface facet lengths.
Set this parameter equal to the distance from the reference nodes within which the connected points must lie. If this parameter is omitted and no surface is specified by the user or a single surface is specified by the user, ABAQUS will compute a default search radius based on the facet thickness (for shell element facets) or characteristic facet length (for non-shell element facets) in the vicinity of each fastener reference point.
This parameter is ignored if multiple surfaces are specified on the data lines.
If this parameter is omitted, the connectivity of the attachment points is defined by the relative positions of their associated surfaces along the fastener projection direction.
If this parameter is included, the connectivity of the attachment points is defined by the order in which their associated surfaces appear on the data lines.
This parameter is ignored if no surfaces are specified on the data lines.
Set this parameter equal to the weighting scheme to be used to weight the contribution of the surface nodes within the radius of influence to the motion of the fastener projection point.
Set WEIGHTING METHOD=UNIFORM (default) to select a uniform weight distribution.
Set WEIGHTING METHOD=LINEAR to select a linear decreasing weight distribution.
Set WEIGHTING METHOD=QUADRATIC to select a quadratic polynomial decreasing weight distribution.
Set WEIGHTING METHOD=CUBIC to select a cubic polynomial monotonic decreasing weight distribution.
First line:
Enter a blank line.
Subsequent lines (optional; if omitted, ABAQUS will search for attachment points on all shell and rigid element facets that fall within a search radius of the fastener reference point):
Surface name.
Etc., up to eight surface names per line.
Repeat this data line as often as necessary to define all the surfaces to be connected for this fastener interaction.
First line:
First direction cosine of the projection direction.
Second direction cosine of the projection direction.
Third direction cosine of the projection direction.
Subsequent lines (optional; if omitted, ABAQUS will search for attachment points on all shell and rigid element facets that fall within a search radius of the fastener reference point):
Surface name.
Etc., up to eight surface names per line.
Repeat this data line as often as necessary to define all the surfaces to be connected for this fastener interaction.