FARM SHOP WORK 



57 



little leeway. If it is desirable to have the nut screw 

 on the bolt very tight, then the tap is stopped before 

 the last thread enters the nut. A little practice soon 



Figure 87. Lag Screw. To set a lag screw in hardwood, bore a hole 

 the size of the screw shank as calipered between the threads. 



Figure 88. (1) Wagon-Box Irons, showing how to attach the box 

 and the rave to the cross-piece and to brace the side of the box to 

 hold it upright. There may be several of these braces on each side 

 of the wagon box. (2) U Bolt in Cement. A solid staple to be em- 

 bedded in concrete for a horse ring, door hinge, cow stanchion, etc. 



