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SQUARE HEAD SET SCREWS

Grade 8 Heat Treated Alloy Steel

Half Dog Point Cup Point

DIAMETER

LENGTH
UNDER
HEAD

PRODUCT
CODE

1/4"
(.250)
Thread
UNC 20

1/2

91003

1

91012

2

91021

5/16"
(.3125)
Thread
UNC 18

1

91033

1 1/4

91036

1 1/2

91039

3/8"
(.375)
ThreadUNC 16

3/4

91057

1

91060

1 1/4

91063

1 1/2

91066

2

91069

2 1/2

91072

3

91075

DIAMETER

LENGTH
UNDER
HEAD

PRODUCT
CODE

1/2"
(.500)
Thread
UNC 13

1

91081

1 1/4

91084

1 1/2

91087

2

91090

2 1/2

91093

3

91096

4

91102

5/8"
(.625)
Thread
UNC 11

2

91114

3

91120

4

91126

5

91129

3/4"
(.750)
Thread
UNC 10

2

91135

2 1/2

91138

3

91141

4

91147

5

91150

DIAMETER

LENGTH
UNDER
HEAD

PRODUCT
CODE

1/4"
(.250)
Thread
UNC 20

1/2

90003

5/8

90006

3/4

90009

1

90012

1 1/4

90015

1 1/2

90018

2

90021

5/16"
(.3125)
Thread
UNC 18

1/2

90024

5/8

90027

3/4

90030

1

90033

1 1/4

90036

1 1/2

90039

2

90042

2 1/2

90045

3/8"
(.375)
ThreadUNC 16

1/2

90051

5/8

90054

3/4

90057

1

90060

1 1/4

90063

1 1/2

90066

2

90069

2 1/2

90072

3

90075

1/2"
(.500)
Thread
UNC 13

3/4

90078

1

90081

1 1/4

90084

1 1/2

90087

2

90090

2 1/2

90093

3

90096

4

90102

5/8"
(.625)
Thread
UNC 11

1 1/4

90108

1 1/2

90111

2

90114

2 1/2

90117

3

90120

3 1/2

90123

4

90126

5

90129

3/4"
(.750)
Thread
UNC 10

2

90135

2 1/2

90138

3

90141

3 1/2

90144

4

90147

5

90150

D A H
Nominal
Diameter 		Head Width Head Height Cup Point

Max.

Min.

Nom.

Min.

Nom. Diam.

1/4"

0.250

0.243

3/16

0.178

1/8

5/16"

0.3125

0.305

15/64

0.224

5/32

3/8"

0.375

0.366

9/32

.270

3/16

7/16"

0.4375

0.428

21/64

0.315

7/32

1/2"

0.500

.490

3/8

0.361

1/4

9/16"

0.5625

0.552

27/64

0.407

9/32

5/8"

0.625

0.614

15/32

0.452

5/16

3/4"

0.750

0.738

9/16

0.544

3/8

7/8"

0.875

0.861

21/32

0.635

7/16

1"

1.000

0.985

3/4

0.726

½

1 1/8"

1.125

1.109

27/32

0.817

9/16

1 1/4"

1.250

1.234

15/16

0.908

5/8

1 3/8"

1.375

1.357

1 1/32

1.000

11/16

1 1/2"

1.500

1.482

1 1/8

1.091

3/4

All lengths threaded to head. See Tool Post tagble for dog point dimensions.

To Order: Specify Product Code. See
Price Schedule for prices.
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