What does M mean on a bolt head?
Fortunately, metric bolts are marked differently than SAE bolts. An ISO metric bolt larger than 6 mm in diameter has either “ISO M” or “M” embossed on top of the head. The number has nothing to do with the size, but does indicate the relative strength of the bolt. The higher the number, the stronger the bolt.
What does M10 bolt mean?
M10-1.0 x 20 M = This designates the fastener is a metric size. 10 = The nominal diameter in millimeters. 1.0 = The thread pitch, or distance between threads, in millimeters. 20 = The fastener’s length, in millimeters.
What are M screw sizes?
The “M” size of an ISO metric thread represents the screw’s nominal size in millimetres. For example, an M3 screw will have a 3mm nominal thread diameter – in reality, the screw would be slightly undersized to ensure compatibility with an M3 (3mm) nut (which, in turn, would also be slightly oversized).
What is the M in bolt size?
The letter ‘M’ indicates that this bolt uses a metric thread. The number ‘8’ refers to the nominal diameter of the bolt shaft in millimeters. The number 1.0 is the thread pitch of the bolt, which is the distance between threads, in millimeters.
What is M10 bolt in inches?
Table 3.
| Metric | Closest Inch |
|---|---|
| M8-1.25 | 5/16-18 (Smaller) |
| M10-1.5 | 3/8-16 (Smaller) |
| M12-1.75 | 1/2-13 (Larger) |
| M14-2.0 | 9/16-12 (Larger) |
What size is M3 screw?
ISO Metric Machine Screw Thread Dimensions
| Thread Size | Nominal Diameter (mm) | Thread Pitch (mm) |
|---|---|---|
| M2.5 | 2.5 | 0.45 |
| M3 | 3.0 | 0.50 |
| M3.5 | 3.5 | 0.60 |
| M4 | 4.0 | 0.70 |
What diameter is M16 thread?
Thread Geometry – Metric Coarse
| Thread | Major Diameter | Pitch |
|---|---|---|
| M12 | 12.0 | 1.75 |
| M14 | 14.0 | 2.00 |
| M16 | 16.0 | 2.00 |
| M18 | 18.0 | 2.50 |
What is the meaning of the diameter of a bolt?
The diameter equal to the external diameter of the threads or the overall diameter of the part. (Nominal diameter is more of a label than a size. For example, a bolt and nut may be described as being ½” diameter. But neither the external threads of the bolt nor the internal threads of the nut are exactly.500 in diameter.
What is the minimum and maximum spacing for bolts in EN 1993?
Minimum and maximum spacing p1, p2 and edge distances e1, e2 for bolts are given in EN1993-1-8 Table 3.3. The minimum values are: e1 ≥ 1.2d0, e2 ≥ 1.2d0, p1 ≥ 2.2d0, p2 ≥ 2.4d0, where d0 is the diameter of the hole, e1, p1 are measured parallel to the load transfer direction and e2, p2 are measured perpendicular to the load transfer direction.
What are the different categories of bolts in Australia?
In Australia, a standard bolting category system has been adopted for use by designers and detailers. This system is summarised in Table 6.1. Category 4.6/S refers to commercial bolts of Property Class 4.6 conforming to AS 1111.1 tightened using a standard wrench to a ‘snug-tight’ condition. Category 8.8/S refers to any bolt of Property Class
What are the dimensions of a metmetric hex bolt?
Metric Hex Bolt Dimensions NOMINAL SIZE (D) BODY DIAMETER HEAD THICKNESS m24 24.00 23.67 15.44 14.56 m30 30.00 29.67 19.48 17.92 m36 36.00 35.61 23.38 21.63 m42 42.00 41.38 26.97 25.03