Inch Size Flat Head Tantalum Screws

Inch size tantalum flat head refractory screws are produced for high temperature vacuum environments. The screw head is tapered, allowing the top of the head to be flush with the surface. Please see the sketch provided for futher description and specs. Please see the charts tab for the refractory properties and temperature conversion.

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For full screw dimensions, please select an individual item."
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Item #

Item Name

Screw Size

Screw Length

(D) Basic Screw Diameter (Max)

(A) Head Diameter (Min)

(A) Head Diameter (Max)

(H) Total Head Height (Min)

(H) Total Head Height (Max)

Material Purity

77034-1360

Ta/W Screw Flat Hd. 4-40 x 3/8" lg

4-40

3/8

0.112

0.200

0.225

0.055

0.067

Tantalum 97½% / Tungsten 2½%

77034-1370

Ta/W Screw Flat Hd. 4-40 x 1/2" lg

4-40

1/2

0.112

0.200

0.225

0.055

0.067

Tantalum 97½% / Tungsten 2½%

77034-1380

Ta/W Screw Flat Hd. 4-40 x 5/8" lg

4-40

5/8

0.112

0.200

0.225

0.055

0.067

Tantalum 97½% / Tungsten 2½%

77034-1420

Ta/W Screw Flat Hd. 5-40 x 1/8" lg

5-40

1/8

0.125

0.225

0.252

0.062

0.075

Tantalum 97½% / Tungsten 2½%

77034-1430

Ta/W Screw Flat Hd. 5-40 x 3/16" lg

5-40

3/16

0.125

0.225

0.252

0.062

0.075

Tantalum 97½% / Tungsten 2½%

77034-1440

Ta/W Screw Flat Hd. 5-40 x 1/4" lg

5-40

1/4

0.125

0.225

0.252

0.062

0.075

Tantalum 97½% / Tungsten 2½%

77034-1450

Ta/W Screw Flat Hd. 5-40 x 5/16" lg

5-40

5/16

0.125

0.225

0.252

0.062

0.075

Tantalum 97½% / Tungsten 2½%

77034-1460

Ta/W Screw Flat Hd. 5-40 x 3/8" lg

5-40

3/8

0.125

0.225

0.252

0.062

0.075

Tantalum 97½% / Tungsten 2½%

77034-1470

Ta/W Screw Flat Hd. 5-40 x 1/2" lg

5-40

1/2

0.125

0.225

0.252

0.062

0.075

Tantalum 97½% / Tungsten 2½%

77034-1480

Ta/W Screw Flat Hd. 5-40 x 5/8" lg

5-40

5/8

0.125

0.225

0.252

0.062

0.075

Tantalum 97½% / Tungsten 2½%

77034-1520

Ta/W Screw Flat Hd. 6-32 x 1/8" lg

6-32

1/8

0.138

0.249

0.279

0.069

0.083

Tantalum 97½% / Tungsten 2½%

77034-1530

Ta/W Screw Flat Hd. 6-32 x 3/16" lg

6-32

3/16

0.138

0.249

0.279

0.069

0.083

Tantalum 97½% / Tungsten 2½%

77034-1540

Ta/W Screw Flat Hd. 6-32 x 1/4" lg

6-32

1/4

0.138

0.249

0.279

0.069

0.083

Tantalum 97½% / Tungsten 2½%

77034-1550

Ta/W Screw Flat Hd. 6-32 x 5/16" lg

6-32

5/16

0.138

0.249

0.279

0.069

0.083

Tantalum 97½% / Tungsten 2½%

77034-1560

Ta/W Screw Flat Hd. 6-32 x 3/8" lg

6-32

3/8

0.138

0.249

0.279

0.069

0.083

Tantalum 97½% / Tungsten 2½%

77034-1570

Ta/W Screw Flat Hd. 6-32 x 1/2" lg

6-32

1/2

0.138

0.249

0.279

0.069

0.083

Tantalum 97½% / Tungsten 2½%

77034-1580

Ta/W Screw Flat Hd. 6-32 x 5/8" lg

6-32

5/8

0.138

0.249

0.279

0.069

0.083

Tantalum 97½% / Tungsten 2½%

77034-1590

Ta/W Screw Flat Hd. 6-32 x 3/4" lg

6-32

3/4

0.138

0.249

0.279

0.069

0.083

Tantalum 97½% / Tungsten 2½%

77034-1600

Ta/W Screw Flat Hd. 6-32 x 1" lg

6-32

1

0.138

0.249

0.279

0.069

0.083

Tantalum 97½% / Tungsten 2½%

77034-1620

Ta/W Screw Flat Hd. 8-32 x 1/8" lg

8-32

1/8

0.164

0.300

0.332

0.084

0.100

Tantalum 97½% / Tungsten 2½%

77034-1630

Ta/W Screw Flat Hd. 8-32 x 3/16" lg

8-32

3/16

0.164

0.300

0.332

0.084

0.100

Tantalum 97½% / Tungsten 2½%

77034-1640

Ta/W Screw Flat Hd. 8-32 x 1/4" lg

8-32

1/4

0.164

0.300

0.332

0.084

0.100

Tantalum 97½% / Tungsten 2½%

77034-1650

Ta/W Screw Flat Hd. 8-32 x 5/16" lg

8-32

5/16

0.164

0.300

0.332

0.084

0.100

Tantalum 97½% / Tungsten 2½%

77034-1660

Ta/W Screw Flat Hd. 8-32 x 3/8" lg

8-32

3/8

0.164

0.300

0.332

0.084

0.100

Tantalum 97½% / Tungsten 2½%

77034-1670

Ta/W Screw Flat Hd. 8-32 x 1/2" lg

8-32

1/2

0.164

0.300

0.332

0.084

0.100

Tantalum 97½% / Tungsten 2½%