Hex high-tension boltF10T Steel Unplated 20X85 Pitch 2.5
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Product Details
- Hex high-tension bolt F10T
- Nominal diameter (d) M20
- Length under head (ℓ) 85.0
- Body diameter (d1) Nominal 20 Tolerance +0.8,-0.4
- Head height (H) Nominal 13 Tolerance ±0.9
- Hex width across flats (B) Nominal 32 Tolerance 0,-1
- Head surface diameter (D) Reference 30
- Head bearing surface diameter (D1) Min 29
- Neck fillet (r) 1.2~2.0
- End chamfer (K) Approx. 2.5
- Screw hole eccentricity (a-b) Max 0.9
- Head bearing surface step height (h) 0.4~0.8
- Thread length (S) Nominal 35 Tolerance +6,0
- Note) 1. The measurement position of d1 shall be at ℓ 0≒d 1/4.
- 2. The length x of the incomplete thread section shall be approximately 2 threads, and approximately 3 threads for full thread.
- Nominal diameter (d) M20
- External thread outer diameter 20
- Height (H) Nominal 20 Tolerance ±0.4
- Hex width across flats (B) Nominal 32 Tolerance 0,-1
- Upper surface diameter (D) Approx. 30
- Bearing surface diameter (D1) Min 29
- Screw hole eccentricity (a-b) Max 0.9
- Bearing surface step height (h) 0.4~0.8
- Note) The chamfer of the thread section on the nut bearing surface side shall have a diameter of 1.0~1.05d.
- Washer nominal size 20
- Inner diameter (dw) Nominal 21 Tolerance +0.8,0
- Outer diameter (Dw) Nominal 40 Tolerance 0,-1
- Thickness (t) Nominal 4.5 Tolerance ±0.5
- Chamfer (c or r) Approx. 2.0
- Note) The drawing shows both chamfered at 45° and those with a fillet (r), but either one is used.
Hex high-tension boltF10T Steel Unplated 20X85 Pitch 2.5
| Steel | Unplated | 20X85 | View Details |
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