Whenever high-strength hardened steel bolts are used…specify High Strength Mil-Carb Washers with the exclusive MC_®, MC²_® , or MC^x identification…THE MARK OF A QUALITY PRODUCT…made in the U.S.A. by Wrought Washer. 

Dimensions listed are to ANSI specifications.  These washers maintain the integrity of high-strength fastener assemblies in O.E.M. or replacement applications.  To be used with S.A.E. Grade 5, Grade 8, or better bolts. 

Fabricated from prime quality medium carbon steel.  Through hardened (quenched and tempered) R/C 38-45, and electro zinc plated. 

MC_®  washers are available in 1/4" through 1-1/2” bolt sizes in U.S. Standard dimensions and 1/4" through 2” bolt sizes in S.A.E. dimensions.  Other sizes are available as special order. 

1/4

3/4

5/16

.055/.065

6.4

7,500

5/16

7/8

3/8

.064/.080

10.0

5,000

3/8

1

7/16

.064/.080

13.0

3,500

7/16

1-1/4

1/2

.064/.080

21.0

2,500

1/2

1-3/8

9/16

.100/.116

38.0

1,500

9/16

1-1/2

5/8

.100/.116

45.0

1,100

5/8

1-3/4

11/16

.122/.138

77.0

700

3/4

2

13/16

.122/.138

100.0

500

7/8

2- 1/4

15/16

.136/.160

138.0

350

1

2- 1/2

1-1/16

.136/.160

169.0

300

1-1/8

2- 3/4

1-1/4

.136/.160

198.0

250

1-1/4

3

1-3/8

.136/.160

234.0

200

1-3/8

3-1/4

1-1/2

.136/.160

271.0

185

1-1/2

3-1/2

1-5/8

.136/.160

316.0

150

1/4

5/8

9/32

.055/.065

4.6

10,000

5/16

11/16

11/32

.055/.065

5.1

10,000

3/8

13/16

13/32

.055/.065

7.2

7,000

7/16

59/64

15/32

.055/.065

9.1

5,000

1/2

1-1/16

17/32

.100/.116

18.2

2,425

9/16

1-3/16

19/32

.100/.116

23.4

2,250

5/8

1-5/16

21/32

.122/.138

38.4

1,340

3/4

1-15/32

13/16

.122/.138

44.5

1,120

7/8

1-3/4

15/16

.136/.152

66.8

695

1

2

1-1/16

.136/.160

89.4

555

1-1/8

2-1/4

1-1/4

.136/.160

111.0

435

1-1/4

2-1/2

1-3/8

.136/.160

138.0

350

1-3/8

2-3/4

1-1/2

.136/.160

173.0

289

1-1/2

3

1-5/8

.136/.160

209.0

240

1-3/4

3-3/8

1-7/8

.178/.196

328.0

150

2

3-3/4

2-1/8

.178/.196

398.0

125