Hex high-tension boltF10T Steel Unplated 12X55 Pitch 1.75
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Product Details
- Hex high-tension bolt F10T
- Nominal diameter (d) M12
- Length under head (ℓ) 55.0
- Body diameter (d1) Nominal 12 Tolerance +0.7,-0.2
- Head height (H) Nominal 8 Tolerance ±0.8
- Hex width across flats (B) Nominal 22 Tolerance 0,-0.8
- Head surface diameter (D) Reference 20
- Head bearing surface diameter (D1) Min 20
- Neck fillet (r) 0.8~1.6
- End chamfer (K) Approx 2
- Screw hole eccentricity (a-b) Max 0.7
- Head bearing surface step height (h) 0.4~0.8
- Thread length (S) Nominal 25 Tolerance +5,0
- Note)1. The measurement position of d1 shall be ℓ 0≒d 1/4.
- 2. The length x of the incomplete thread section shall be approximately 2 pitches, and in the case of full thread, it shall be approximately 3 pitches.
- Nominal diameter (d) M12
- External thread outer diameter 12
- Height (H) Nominal 12 Tolerance ±0.35
- Hex width across flats (B) Nominal 22 Tolerance 0,-0.8
- Upper surface diameter (D) Approx 20
- Bearing surface diameter (D1) Min 20
- Screw hole eccentricity (a-b) Max 0.7
- 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 12
- Inner diameter (dw) Nominal 13 Tolerance +0.7,0
- Outer diameter (Dw) Nominal 26 Tolerance 0,-0.8
- Thickness (t) Nominal 3.2 Tolerance ±0.4
- Chamfer (c or r) Approx 1.5
- Note)The drawing shows both a 45° chamfer and a rounded (r) edge, and either one of these is used.
Hex high-tension boltF10T Steel Unplated 12X55 Pitch 1.75
| Steel | Unplated | 12X55 | View Details |
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