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Malleable iron.
Plain or electro-galvanized.
Designed for the suspension of a hanger rod from the center of an I-beam. The clamp accommodates flange widths of 2 3/8" - 7". Flange thickness not to exceed .60 inches. Normally used in conjunction with figure 157 extension piece. Figure 157 provides 1" of vertical adjustment.
When used with FIG. 157 Extension Piece, complies with Federal Specification WW-H-171-E (Type# 30), A-A-1192 A (Type# 30) and Manufacturers' Standardization Society MSS SP-58 and SP-69 (Type# 30).
Specify figure number and finish.
For complete assembly with extension piece see FIG. 229.