Semprex - Manufacturer of Probe Needles

315-223 Probe Needle (0.00025 inch radius Tip)

Finest quality needles available
Special, proprietary machining technique used to grind needles of superior accuracy and consistency
Machine grinding creates smooth, straight surfaces (unlike chemical etching which can result in pits and concave/convex surfaces)
Tungsten Carbide and flat tip recommended for punching applications
Hard materials only -- soft materials such as plain Tungsten are not available

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Standard Specifications

MATERIAL

DIAMETER
D

TIP ANGLE
A

TIP RADIUS
R [4]

LENGTH
L

TYPE

P/N

MIL

P/N

DEG

P/N

MIL

P/N

INCH

P/N

Tungsten Carbide (WC)

31

13.0

0-

   5 [1]

0

0.20

1

0.500

1

15.0

1-

8

1

0.25

2

0.625

2

Beryllium Copper (BeCu) [2]

33

20.0

2-

10

2

0.50

3

0.750

3

25.0

3-

15

3

0.75

4

0.875

4

Tool Steel

35

27.5

4-

18

4

1.00

5

1.000

5

28.0

5-

20

5

2.50

6

1.250

6

Customer Supplied [3]

39

31.0

6-

25

6

5.00

7

1.500

7

30

7

7.50

8

1.750

8

10.0

9

2.000

9

Tolerances >>

+/- 0.2

+/-1

+/- 0.1

+/- 0.031

ORDERING INFORMATION

NOTES:
[1] ONLY Tungsten Carbide may include this specification. All other materials CANNOT include this specification.
[2]  Minimum diameter for Beryllium Copper is .020.  Material has been spring-temper hardened.
[3] Customer Supplied material must be hard enough to allow grinding. Material must be supplied with correct diameter specifications. Extra material will be required to accomodate failure rate.
[4] Standard tips are spherical. For FLAT TIP, specify "-1" at end of part number (e.g. 312-345 becomes 312-345-1).

QUANTITY DISCOUNTS (per unique specification):
8% at 100 pcs.
15% at 250 pcs.
22% at 500 pcs.
27% at 1000 pcs.
30% at 2500 pcs.

MINIMUM ORDER (per unique specification):
50 pcs.

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