31-5223 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 INCH P/N DEG P/N INCH P/N INCH P/N Tungsten Carbide (WC) 31- .013 0    5 [1] 0 .0001[1] 0 0.50 1 .015 1 8 1 .0002 1 0.625 2 Beryllium Copper (BeCu) [2] 33- .020 2 10 2 .00025 2 0.75 3 .025 3 15 3 .0005 3 0.875 4 Tool Steel 35- .0275 4 18 4 .00075 4 1.00 5 .028 5 20 5 .001 5 1.25 6 Customer Supplied [3] 39- .031 6 25 6 .0025 6 1.50 7     30 7 .005 7 1.75 8             .0075 8 2.00 9         .010 9     Tolerances >>   +/- 0.0002   WC +/- 0.5 All other +/-1   +/- 0.0001   +/- 0.025  ORDERING INFORMATION NOTES: [1]  ONLY Tungsten Carbide may include ONE of these specifications, NOT BOTH.  All other materials CANNOT include ANY of these specifications. [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. 31-2345 becomes 31-2345-1). 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. Click    to purchase online now!

EXAMPLE SPECIFICATION:

P/N 31-2345 =
     Tungsten Carbide
     0.020 diameter
     15 degree tip angle
     0.00075 tip radius
     1.000 length