New Zealand Standard Bar Hooks

Recommended End Hooks All Grades of Steel

D = Finished bend diameter

Minimum length of bar, La(mm) to form a standard hook or cog
Type of Bar	Min pin dia., d	Bar diameter, db(mm)
		6	10	12	16
Fitments:
D500L & R250N bars	3 db	100	110	120	*
D500N bars	4 db	110	130	140	170
Reinforcement other than those below	5 db	120	140	160	180
Bends designed to be straightened or subsequently rebent	4 db	110	130	140	170
	5 db	*	*	*	*
	6 db	*	*	*	*
Bends in reinforcement epoxy-coated or galvanized either before or after bending	5 db	120	140	160	180
	8 db	*	*	*	*

 

Minimum length of bar, La(mm) to form a standard hook or cog
Type of Bar	Min pin dia., d	Bar diameter, db(mm)
		20	24	28	32	36
Fitments:
D500L & R250N bars	3 db	*	*	*	*	*
D500N bars	4 db	200	230	270	300	340
Reinforcement other than those below	5 db	220	260	300	340	380
Bends designed to be straightened or subsequently rebent	4 db	*	*	*	*	*
	5 db	220	260	*	*	*
	6 db	*	*	330	380	430
Bends in reinforcement epoxy-coated or galvanized either before or after bending	5 db	*	*	*	*	*
	8 db	290	340	390	440	500