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WTF Nut

Using an end-cap method, this model achieve stable motion in a high-speed rotation.
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Days to Ship Clear
For Shaft O.D. (mm) Clear
Lead (mm) Clear
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*Please contact THK if you need more than available quantity or out of stock items
Attributes Part Number Unit Price Quantity Days to Ship Include Shaft Item Total
For Shaft O.D. (mm): 15
Lead (mm): 20
WTF1520-3ZZ NUT
Days to Ship: 2 - 3 weeks*
For Shaft O.D. (mm): 15
Lead (mm): 20
WTF1520-6ZZ NUT
Days to Ship: 2 - 3 weeks*
For Shaft O.D. (mm): 15
Lead (mm): 30
WTF1530-2ZZ NUT
Days to Ship: 1 - 3 days
For Shaft O.D. (mm): 20
Lead (mm): 40
WTF2040-2ZZ NUT
Days to Ship: 1 - 3 days
For Shaft O.D. (mm): 20
Lead (mm): 40
WTF2040-3ZZ NUT
Days to Ship: 1 - 3 days
For Shaft O.D. (mm): 25
Lead (mm): 50
WTF2550-2ZZ NUT
Days to Ship: 1 - 3 days
For Shaft O.D. (mm): 25
Lead (mm): 50
WTF2550-3ZZ NUT
Days to Ship: 1 - 3 days
For Shaft O.D. (mm): 30
Lead (mm): 60
WTF3060-2ZZ NUT
Days to Ship: 1 - 3 days
For Shaft O.D. (mm): 30
Lead (mm): 60
WTF3060-3ZZ NUT
Days to Ship: 1 - 3 days
Screw shaft outer diameterd LeadPh Model No. Ball center-to-center diameterdp Thread minor diameterdc No. of loaded circuitsRows × turns Basic load rating RigidityK Nut dimensions Axial clearance Screw shaft inertial moment/mm Nut mass
DynamicCa StaticC0a Outer diameterD Flange diameterD0 Overall lengthL1 H B1 PCD d1 Tw Greasing hole SealM1
N1 A
mm mm mm mm kN kN N/µm mm mm mm mm mm mm mm mm mm mm mm kg•cm2/mm kg
15 20 WTF1520‑3 15.75 12.5 2×1.5 5.5 14.2 140 32 53 45 10 28 43 5.5 33 5 M6×1 3.5 0.1 3.9 × 10-4 0.2
15 20 WTF1520‑6 15.75 12.5 4×1.5 10.1 28.5 280 32 53 45 10 28 43 5.5 33 5 M6×1 3.5 0.1 3.9 × 10-4 0.2
15 30 WTF1530‑2 15.75 12.5 4×0.6 4.3 9.3 120 32 53 33 10 17 43 5.5 33 5 M6×1 3.5 0.1 3.9 × 10-4 0.22
20 40 WTF2040‑2 20.75 17.5 4×0.65 5.4 13.6 160 37 57 41.5 10 25.5 47 5.5 38 5.5 M6×1 3.5 0.1 1.23 × 10-3 0.25
20 40 WTF2040‑3 20.75 17.5 2×1.65 6.6 17.2 200 37 57 81.5 10 65.5 47 5.5 38 5.5 M6×1 3.5 0.1 1.23 × 10-3 0.5
25 50 WTF2550‑2 26 21.9 4×0.65 8.5 21.2 200 45 69 52 12 31.5 57 6.6 46 7 M6×1 3.5 0.1 3.01 × 10-3 0.45
25 50 WTF2550‑3 26 21.9 2×1.65 10.4 26.9 260 45 69 102 12 81.5 57 6.6 46 7 M6×1 3.5 0.1 3.01 × 10-3 0.85
30 60 WTF3060‑2 31.25 26.4 4×0.65 11.8 30.6 240 55 89 62.5 15 37.5 71 9 56 9 M6×1 3.8 0.14 6.24 × 10-3 0.8
30 60 WTF3060‑3 31.25 26.4 2×1.65 14.5 38.9 310 55 89 122.5 15 97.5 71 9 56 9 M6×1 3.8 0.14 6.24 × 10-3 1.7
AFB-LF is the default grease. For more detailed specifications, please download the Product Catalog with the link in the Downloads section of this product page.
Model Screw shaft outer diameter*1 Lead*1 Circuits Seals
WTF 15 20 - 3 ZZ NUT
WTF 15~30 20~60 Various ZZ : Brush seals
Note 1: See the Specifications tab to see standard sizes available.The above selections are Online Store standards. If you need a selection that differs from the standard, please contact us at tossales@thk.com