FF-S-325
September 10, 1957
SUPERSEDING
Int. Fed. Spec. FF-D-200 (COM-NBS)
DEVICES, ANCHORING, MASONRY
December 19, 1955
FEDERAL SPECIFICATION
SHIELD, EXPANSION; NAIL, EXPANSION; AND NAIL,
DRIVE SCREW (DEVICES, ANCHORING, MASONRY)
This specification was approved by the Commissioner, Federal Supply Service,
General Services Administration, for the use of all Federal agencies
1. SCOPE AND CLASSIFICATION
1.1 Scope. This specification covers threaded and unthreaded anchoring
devices for attaching equipment and fixtures to an existing solid masonry.
(See 6.1.)
1.2 Classification
1.2.1 Groups, types, classes, and styles. The anchoring devices covered
by this specification shall be of the following groups, types, classes and
styles, as specified:
Group I--Shield, Expansion (Lead, Bolt and Stud Anchors), see 3.2.1:
Type 1--"Head out"-Embedded nut anchors:
Class 1--Single lead expansion unit anchors (fig. 1).
Class 2--Multiple lead expansion units anchors (fig. 4).
Type 2--"Nut out"-Embedded bolt and stud anchors:
Class 1--Single lead expansion unit anchors:
Style 1--Single-end expansion lead sleeve anchors (fig. 5).
Style 2--Double-end expansion units lead sleeve anchors (fig. 6).
Class 2--Multiple lead expansion units anchors:
Style 1--Cone units anchors (fig. 7).
Style 2--Disk units anchors (fig. 8).
Group II--Shield, Expansion (Bolt Anchors), see 3.2.2.
Type 1--Lag bolt expansion shield anchors (fig. 9):
Class 1--Long shield anchors
Class 2--Short shield anchors
Type 2--Machine bolt expansion shield anchors:
Class 1--Closed-end, bottom bearing, expansion shield anchors (fig.
10).
Class 2--Open-end expansion shield anchors:
Style 1--Single-end expansion shield anchors (fig. 11).
Style 2--Double-end expansion shield anchors (fig. 12).
Type 3--Tubular expansion shield anchors.
Class 1--Single-edit shield anchors (fig. 13).
Class 2--Multiple-slit shield anchors (fig. 14).
Group III--Shield, Expansion (Self-Drilling Tubular Expansion Shell Bolt
Anchors), see 3.2.3.
Type 1--Anchors with externally slit expansion shells and a single-
cone expander (fig. 15).
Type 2--Anchors with internally grooved expansion shells and a
double-cone expander (fig. 16).
FSC 5340, 5315, 5120
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