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    WTF Nut

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    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 Online Store
    Unit Price (USD)    		 Quantity Days to Ship Include Shaft Item Total
    For Shaft O.D. (mm): 15
    Lead (mm): 20
    		WTF1520-3ZZ NUT –
    		Days to Ship: 3 - 4 weeks
    For Shaft O.D. (mm): 15
    Lead (mm): 20
    		WTF1520-6ZZ NUT –
    		Days to Ship: 1 - 3 days
    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
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    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 [email protected]