ANSI and National  Standard Bushings

Head Press Fit

Type H

All press fit bushings have lapped, honed or ground I.D.'s.

Bushings with I.D.'s up to 1.0" are concentric to .0003" max.

T. I. R. to the O.D.  Larger sizes are concentric to .0005" T.I.R.

to the O.D.

National bushings are not counterbored.

A

B

C

F

G

Standard ID Sizes

Range in

Body O.D.

Length

ANSI

Price

Head

Head

Number, Letter, Or Fraction Sizes

Inches

Nominal (Actual)

(Overall)

Symbol Type "P"

Code **

Dia.

Thick.

.0135

1/4

H-10-4

238

80, 79, 1/64, 78, 77, 76, 75, 74

to

5/32

5/16

H-10-5

240

1/4

3/32

73, 72, 71, 70

.0280

(.1578 / .1575)

3/8

H-10-6

245

1/2

H-10-8

246

1/4

H-10-4

219

69, 68, 1/32, 67, 66, 65, 64, 63,

.0292

5/32

5/16

H-10-5

221

1/4

3/32

62, 61, 60, 59, 58, 57, 56, 3/64

to

(.1578 / .1575)

3/8

H-10-6

226

.0469

1/2

H-10-8

228

1/4

H-10-4

200

.0520

5/32

5/16

H-10-5

201

1/4

3/32

55, 54, 53, 1/16

to

(.1578 / .1575)

3/8

H-10-6

204

.0625

1/2

H-10-8

207

1/4

H-12-4

145

1/16, 52, 51, 50, 49, 48, 5/64,

.0625

3/16

5/16

H-12-5

148

47, 46, 45, 44, 43, 42, 3/32, 41,

to

(.1891 / .1888)

3/8

H-12-6

151

5/16

3/32

40, 39

.0995

1/2

H-12-8

153

3/4

H-12-12

173

1/4

H-13-4

210

60, 59, 58, 57, 56, 3/64, 55, 54,

.0400

13/64

5/16

H-13-5

212

53

to

(.2046 / .2043)

3/8

H-13-6

218

19/64

3/32

.0595

1/2

H-13-8

221

3/4

H-13-12

253

1/4

H-13-4

145

5/16

H-13-5

148

1/16, 52, 51, 50, 49, 48, 5/64,

.0625

13/64

3/8

H-13-6

151

19/64

3/32

47, 46, 45, 44, 43, 42, 3/32, 41,

to

(.2046 / .2043)

1/2

H-13-8

153

40, 39

.0995

3/4

H-13-12

173

1

H-13-16

203

1/4

H-16-4

136

5/16

H-16-5

137

40, 39, 38, 37, 36, 7/64, 35, 34,

.0980

1/4

3/8

H-16-6

141

33, 32, 31, 1/8, 30, 29, 28, 9/64

to

(.2516 / .2513)

1/2

H-16-8

142

23/64

3/32

.1406

5/8

H-16-10

154

3/4

H-16-12

158

1

H-16-16

189

1-3/8

H-16-22

231

** Price Code - See Separate Net Price Schedule

NOTE: Head Press Fit Bushings with .010" / .020" rough grinding stock on the O.D. are available,

please call for pricing.   Add the letter "U" to the end of the ANSI Symbol when ordering.  (HU-16-22)

10

National Bushing & Manufacturing Corp., 1936 Raymond Dr., Northbrook, IL 60062

ANSI And National Standard Bushings

Head Press Fit

Type H

I.D. Range

Standard I.D. Tolerance

(Drill Size)

(add to nominal I.D.)

#80 to 1/4

+.0001 to +.0004

Over 1/4 to 3/4

+.0001 to +.0005

Over 3/4 to 1-1/2

+.0002 to +.0006

Over 1-1/2 to 2-3/4

+.0003 to +.0007

A

B

C

F

G

Standard ID Sizes

Range in

Body O.D.

Length

ANSI

Price

Head

Head

Number, Letter, Or Fraction Sizes

Inches

Nominal (Actual)

(Overall)

Symbol Type "P"

Code **

Dia.

Thick.

1/4

H-20-4

122

5/16

H-20-5

125

1/8, 30, 29, 28, 9/64, 27, 26, 25,

.1250

5/16

3/8

H-20-6

128

24, 23, 5/32, 22, 21, 20, 19, 18,

to

(.3141 / .3138)

1/2

H-20-8

129

27/64

1/8

11/64, 17, 16, 15, 14, 13, 3/16,

.1935

5/8

H-20-10

130

12, 11, 10,

3/4

H-20-12

132

1

H-20-16

144

1-3/8

H-20-22

193

1-3/4

H-20-28

228

1/4

H-24-4

118

10, 9, 8, 7, 13/64, 6, 5, 4, 3,

.1935

3/8

3/8

H-24-6

124

7/32, 2, 1,

to

(.3766 / .3763)

1/2

H-24-8

126

1/2

3/32

.2280

3/4

H-24-12

129

1

H-24-16

139

1/4

H-26-4

119

5/16

H-26-5

120

3/16, 12, 11, 10, 9, 8, 7, 13/64,

.1875

13/32

3/8

H-26-6

124

6, 5, 4, 3, 7/32, 2, 1, A, 15/64,

to

(.4078 / .4075)

1/2

H-26-8

126

1/2

5/32

B, C, D, 1/4, F

.2570

3/4

H-26-12

128

1

H-26-16

129

1-3/8

H-26-22

148

1-3/4

H-26-28

166

1/4

H-28-4

119

3/8

H-28-6

124

.2344

7/16

1/2

H-28-8

126

9/16

3/32

15/64, 1/4, F, 17/64, 9/32

to

(.4392 / .4389)

5/8

H-28-10

128

.2812

3/4

H-28-12

129

1

H-28-16

139

1/4

H-32-4

118

5/16

H-32-5

120

3/8

H-32-6

124

3/16, 12, 11, 10, 9, 8, 7, 13/64,

.1875

1/2

1/2

H-32-8

126

39/64

7/32

6, 5, 4, 3, 7/32, 2, 1, A, 15/64, B,

to

(.5017 / .5014)

3/4

H-32-12

128

C, D, 1/4, F, G, 17/64, H, I, J, K,

.3160

1

H-32-16

138

9/32, L, M, 19/64, N, 5/16, O

1-3/8

H-32-22

148

1-3/4

H-32-28

166

.3020

3/8

H-36-6

122

N, 5/16, O, P, 21/64, Q, R, 11/32

to

9/16

1/2

H-36-8

122

.3438

(.5642 / .5639)

5/8

H-36-10

123

11/16

3/32

3/4

H-36-12

124

1

H-36-16

128

** Price Code - See Separate Net Price Schedule

NOTE: Head Press Fit Bushings with .010 / .020 rough grinding stock on the O.D. are available,

please call for pricing.   Add the letter "U" to the end of the ANSI Symbol when ordering.  (HU-16-22)

Phone: 847-847-1553    Fax: 847-847-1554

11

ANSI and National  Standard Bushings

Head Press Fit

Type H

All press fit bushings have lapped, honed or ground I.D.'s.

Bushings with I.D.'s up to 1.0" are concentric to .0003" max.

T. I. R. to the O.D.  Larger sizes are concentric to .0005" T.I.R.

to the O.D.

National bushings are not counterbored.

A

B

C

F

G

Standard ID Sizes

Range in

Body O.D.

Length

ANSI

Price

Head

Head

Number, Letter, Or Fraction Sizes

Inches

Nominal (Actual)

(Overall)

Symbol Type "P"

Code **

Dia.

Thick.

1/4

H-40-4

124

5/16

H-40-5

118

5/16, O, P, 21/64, Q, R, 11/32,

.3125

5/8

3/8

H-40-6

120

S, T, 23/64, U, 3/8, V, W, 25/64,

to

(.6267 / .6264)

1/2

H-40-8

120

51/64

7/32

X, Y, 13/32, Z, 27/64, 7/16

.4375

5/8

H-40-10

123

3/4

H-40-12

126

1

H-40-16

128

1-3/8

H-40-22

147

1-3/4

H-40-28

158

2-1/8

H-40-34

172

1/4

H-48-4

128

3/8

H-48-6

124

1/2

H-48-8

124

5/16, O, P, 21/64, Q, R, 11/32,

.3125

3/4

5/8

H-48-10

126

S, T, 23/64, U, 3/8, V, W, 25/64,

to

(.7518 / .7515)

3/4

H-48-12

128

59/64

7/32

X, Y, 13/32, Z, 27/64, 7/16,

.5312

1

H-48-16

132

29/64, 15/32, 31/64, 1/2, 33/64,

1-1/4

H-48-20

148

17/32

1-3/8

H-48-22

148

1-3/4

H-48-28

159

2-1/8

H-48-34

173

2-1/2

H-48-40

270

3/8

H-56-6

133

1/2

H-56-8

133

5/8

H-56-10

134

1/2, 33/64, 17/32, 35/64, 9/16,

.5000

7/8

3/4

H-56-12

134

37/64, 19/32, 39/64, 5/8, 41/64,

to

(.8768 / .8765)

1

H-56-16

140

21/32

.6562

1-1/4

H-56-20

145

1-7/64

1/4

1-3/8

H-56-22

146

1-1/2

H-56-24

155

1-3/4

H-56-28

159

2-1/8

H-56-34

174

2-1/2

H-56-40

270

1/2

H-64-8

136

1/2, 33/64, 17/32, 35/64, 9/16,

.5000

1

3/4

H-64-12

137

37/64, 19/32, 39/64, 5/8, 41/64,

to

(1.0018 / 1.0015)

1

H-64-16

141

21/32, 43/64, 11/16, 45/64,

.7656

1-3/8

H-64-22

147

1-15/64

5/16

23/32, 47/64, 3/4, 49/64

1-1/2

H-64-24

165

1-3/4

H-64-28

170

2-1/8

H-64-34

188

2-1/2

H-64-40

205

3

H-64-48

277

** Price Code - See Separate Net Price Schedule

NOTE: Head Press Fit Bushings with .010 / .020 rough grinding stock on the O.D. are available,

please call for pricing.   Add the letter "U" to the end of the ANSI Symbol when ordering.  (HU-16-22)

12

National Bushing & Manufacturing Corp., 1936 Raymond Dr., Northbrook, IL 60062

ANSI and National  Standard Bushings

Head Press Fit

Type H

I.D. Range

Standard I.D. Tolerance

(Drill Size)

(add to nominal I.D.)

#80 to 1/4

+.0001 to +.0004

Over 1/4 to 3/4

+.0001 to +.0005

Over 3/4 to 1-1/2

+.0002 to +.0006

Over 1-1/2 to 2-3/4

+.0003 to +.0007

A

B

C

F

G

Standard ID Sizes

Range in

Body O.D.

Length

ANSI

Price

Head

Head

Number, Letter, Or Fraction Sizes

Inches

Nominal (Actual)

(Overall)

Symbol Type "P"

Code **

Dia.

Thick.

5/8

H-80-10

163

3/4

H-80-12

158

.8750

1-1/4

1

H-80-16

168

1-1/2

1/4

7/8, 15/16

to

(1.2520 / 1.2517)

1-1/4

H-80-20

178

.9375

1-1/2

H-80-24

186

1-3/4

H-80-28

194

2

H-80-32

210

1/2

H-88-8

165

3/4

H-88-12

166

3/4, 49/64, 25/32, 51/64, 13/16,

.7500

1-3/8

1

H-88-16

176

53/64, 27/32, 55/64, 7/8, 57/64,

to

(1.3772 / 1.3768)

1-3/8

H-88-22

188

1-39/64

3/8

29/32, 59/64, 15/16, 6//64,

1.0312

1-1/2

H-88-24

205

31/32, 63/64, 1", 1-1/64, 1-1/32

1-3/4

H-88-28

205

2-1/8

H-88-34

223

2-1/2

H-88-40

241

3

H-88-48

304

1", 1-1/64, 1-1/32, 1-3/64,

3/4

H-112-12

212

1-1/16, 1-5/64, 1-3/32, 1-7/64,

1.0000

1

H-112-16

198

1-1/8, 1-9/64, 1-5/32, 1-11/64,

to

1-3/4

1-3/8

H-112-22

212

1-63/64

3/8

1-3/16, 1-13/64, 1-7/32,

1.3906

(1.7523 / 1.7519)

1-3/4

H-112-28

227

1-15/64, 1-1/4, 1-17/64, 1-9/32,

2-1/8

H-112-34

246

1-19/64, 1-5/16, 1-21/64,

2-1/2

H-112-40

264

1-11/32, 1-23/64, 1-3/8, 1-25/64

3

H-112-48

322

1-3/8, 1-25/64, 1-13/32,

1-27/64, 1-7/16, 1-29/64

1

H-144-16

231

1-15/32, 1-31/64, 1-1/2,

1.3750

1-3/8

H-144-22

249

1-33/64, 1-17/32, 1-35/64,

to

2-1/4

1-3/4

H-144-28

272

1-9/16, 1-37/64, 1-19/32,

1.7500

(2.2525/2.2521)

2-1/8

H-144-34

288

2-31/64

3/8

1-39/64, 1-5/8, 1-41/64,

2-1/2

H-144-40

305

1-21/32, 1-43/64, 1-11/16,

3

H-144-48

335

1-45/64, 1-23/32, 1-47/64,

1-3/4

** Price Code - See Separate Net Price Schedule

NOTE: Head Press Fit Bushings with .010 / .020 rough grinding stock on the O.D. are available,

please call for pricing.   Add the letter "U" to the end of the ANSI Symbol when ordering.  (HU-16-22)

Phone: 847-847-1553    Fax: 847-847-1554

13