Husqvarna RZ5424 / 966659301, RZ4621 CA Torque Specifications, Accessories, Standard Hardware

TECHNICAL DATA

Torque Specifications

Engine crankshaft bolt	50 ft/lb (67 Nm)	Standard ¼" fasteners	9 ft/lb (12 Nm)
Deck pulley bolts	150 ft/lb (203 Nm)	Standard 5/16" fasteners	18 ft/lb (25 Nm)
Lug nuts	75 ft/lb (100 Nm)	Standard 3/8" fasteners	33 ft/lb (44 Nm)
Blade bolt	90 ft/lb (122 Nm)	Standard 7/16" fasteners	52 ft/lb (70 Nm)
		Standard ½” fasteners	80 ft/lb (110 Nm)

HEX HEAD CAP SCREWS

The torque values shown should be used as a general guideline when specific torque values are not given.

U.S. Standard Hardware

Grade		SAE Grade 5		SAE Grade 8		Flangelock Screw
						w/Flangelock Nut
	Size	ft./lbs	Nm	ft./lbs	Nm	ft./lbs	Nm
coarse	¼	9	12	13	18
	5/16	18	24	28	38	24	33
or
	3/8	31	42	46	62	40	54
fine
inches,	7/16	50	68	75	108
	½	75	102	115	156
in
	9/16	110	150	165	224
(Diameter
	5/8	150	203	225	305
Shank Size thread)	¾	250	339	370	502
	7/8	378	513	591	801
	11/8	782	1060	1410	1912

** Grade 5 - Minimum commercial quality (lower quality not recommended)

Metric Standard Hardware

Grade			Grade 8.8			Grade 10.9			Grade 12.9
	Size	ft./lbs		Nm	ft./lbs		Nm	ft./lbs		Nm
	M4	1.5		2	2.2		3	2.7		3.6
	M5	3		4	4.5		6	5.2		7
thread)	M6	5.2		7	7.5		10	8.2		11
	M7	8.2		11	12		16	15		20
coarse	M8	13.5		18	18.8		25	21.8		29
fine or	M10	24		32	35.2		47	43.5		58
	M12	43.5		58	62.2		83	75		100
inches,
	M14	70.5		94	100		133	119		159
in	M16	108		144	147		196	176		235
(Diameter	M18	142		190	202		269	242		323
	M20	195		260	275		366	330		440
Size	M22	276		368	390		520	471		628
	M24	353		470	498		664	596		794
Shank
	M27	530		707	474		996	904		1205

Accessories

Collection system

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