Bush Hog BBC 48 Torque Specifications, American, Metric, Bolt Head Markings, W R E N C H, Wrench

TORQUE SPECIFICATIONS

	Proper toque for American fasteners used on Bush Hog equipment.
AMERICAN	Recommended Torque in Foot Pounds (Newton Meters).*
Bolt Head Markings		B O L T D IA M E T E R
	W R E N C H	(IN .) “B ” A N D	S A E	S A E	S A E
	S IZ E (IN .) “A ”	T H R E A D S IZ E	G R A D E 2	G R A D E 5	G R A D E 8

Wrench Size “A”

SAE Grade 2 (No Dashes)

SAE Grade 5

(3 Dashes)

Bolt	“B”
Diameter

SAE Grade 8

(6 Dashes)

7/16	1/4 - 2O UNC	6	(7)	8 (11)		12	(16)
7/16	1/4 - 28 UNF	6	(8)	10	(13)	14	(18)
1/2	5/16 - 18 UNC	11	(15)	17	(23)	25	(33)
1/2	5/16 - 24 UNF	13	(17)	19	(26)	27	(37)
9/16	3/8 - 16 UNC	20	(27)	31	(42)	44	(60)
9/16	3/8 - 24 UNF	23	(31)	35	(47)	49	(66)
5/8	7/16 - 14 UNC	32	(43)	49	(66)	70	(95)
5/8	7/16 - 20 UNF	36	(49)	55	(75)	78 (106)
3/4	1/2 - 13 UNC	49	(66)	76 (103)		106	(144)
3/4	1/2 - 20 UNF	55	(75)	85 (115)		120	(163)
7/8	9/16 - 12 UNC	70	(95)	109	(148)	153	(207)
7/8	9/16 - 18 UNF	79 (107)		122	(165)	172	(233)
15/16	5/8 - 11 UNC	97 (131)		150	(203)	212	(287)
15/16	5/8 - 18 UNF	110	(149)	170	(230)	240	(325)
1-1/8	3/4 - 10 UNC	144	(195)	266	(360)	376	(509)
1-1/8	3/4 - 16 UNF	192	(260)	297	(402)	420	(569)
1-5/16	7/8 - 9 UNC	166	(225)	430	(583)	606	(821)
1-5/16	7/8 - 14 UNF	184	(249)	474	(642)	668	(905)
1-1/2	1 - 8 UNC	250	(339)	644	(873)	909 (1232)
1-1/2	1 - 12 UNF	274	(371)	705	(955)	995 (1348)
1-1/2	1 - 14 UNF	280	(379)	721	(977)	1019	(1381)
1-11/16	1-1/8 - 7 UNC	354	(480)	795 (1077)		1288(1745)
1-11/16	1-1/8 - 12 UNF	397	(538)	890 (1206)		1444	(1957)
1-7/8	1-1/4 - 7 UNC	500	(678)	1120	(1518)	1817	(2462)
1-7/8	1-1/4 - 12 UNF	553	(749)	1241	(1682)	2013	(2728)
2-1/16	1-3/8 - 6 UNC	655	(887)	1470	(1992)	2382	(3228)
2-1/16	1-3/8 - 12 UNF	746 (1011)		1672	(2266)	2712	(3675)
2-1/4	1-1/2 - 6 UNC	870 (1179)		1950	(2642)	3161	(4283)
2-1/4	1-1/2 - 12 UNF	979 (1327)		2194	(2973)	3557	(4820)

METRIC

Bolt	“B”
Diameter

Wrench

Size “A” 8.8

Numbers appearing on bolt heads indicate ASTM class.

*U se 7 5 % o f th e sp e cifie d to rq u e v a lu e fo r p la te d fa s te n e rs . U s e 8 5 % o f th e s p e c i- fie d to rq u e va lu e s fo r lu b rica te d fa ste n e rs .

Proper torque for metric fasteners used on Bush Hog equipment.

Recommended torque in foot pounds (newton Meters).*

	—WRENCH	BOLT
	SIZE	DIA.	ASTM		ASTM		ASTM		ASTM
	(mm) “A”	(mm) “B”	4.6		8.8		9.8		10.9
8		5	1.8	(2.4)			5.1	(6.9)	6.5	(8.8)
10		6	3	(4)			8.7 (12)		11.1 (15)
13		8	7.3 (10)				21.1 (29)		27	(37)
16		10	14.5 (20)				42	(57)	53	(72)
18		12	25	(34)	74 (100)		73	(99)	93 (126)
21		14	40	(54)	118	(160)	116	(157)	148	(201)
	24	16	62	(84)	167	(226)	181	(245)	230	(312)
30		20	122	(165)	325	(440)			449	(608)
33		22			443	(600)			611	(828)
36		24	211	(286)	563	(763)			778 (1054)
41		27			821 (1112)				1138	(1542)
46		30	418	(566)	1119	(1516)			1547	(2096)

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