Metric Hex Head Bolt Tolerances

Nominal screw sizes m5 and larger have six drilled holes spaced 60 degrees apart unless the purchaser specifies two drilled holes.

Metric hex head bolt tolerances.

The illustration below shows the tolerance of the metric screw threads. Tolerance zones for socket set screws tolerance zones for socket head cap screws note. Hex head bolt and clearance hole installation tolerance table chart. Drilled head metric hexagon socket head cap screws normally are not available in screw sizes smaller than m3 nor larger than m36.

Us machine screws dimensions machine screw diameters. Us hex bolts metric ansi asme b18 2 3m dimensions of hex bolts metric units. A hex bolt with metric thread pitch made from medium carbon steel and heat treated. The following is a recommended mechanical tolerance and hole sizes for standard ansi hex head fasteners.

M6x1 0 stainless steel metric hex head cap screws. Grade b bolts have looser tolerances and can be manufactured in a cold or hot forging process. Other available thread tolerances. All short lengths are fully threaded.

Grade a bolts are the preferred style for most applications. M10x1 5 stainless steel metric hex head cap screws. The m3 and m4 nominal screw sizes have two drilled holes spaced 180 degrees apart. Tolerance s 0 7 ef8 0 9 js9 1 3 k9 1 5 d9 d10 2 2 5 d10 3 d11 d11 4 e11 5 6 8 e11 10 e12 12 14 14 d12 feature hexagon sockets.

Jis b1180 and three sizes of iso 4014 and iso 4017 have heads that are smaller than their din. Us hex bolts inches ansi asme b18 2 1 dimensions of hex bolts imperial units. Like the inch series internal threads with allowance are not standard practice. A hex bolt with metric thread pitch made from medium carbon steel and heat treated.

For din 912 or iso 4762 property class 12 9 socket head cap screws class 8 8 and stainless steel socket head cap screws have 6g tolerance. M16 x 2 0 metric hex head cap screw. The illustration below show the tolerance of the metric screw threads. For s 0 7 to 1 3 the actual allowance in the product standards has been slightly modified for tech nical reasons.

Select from partially threaded or fully threaded. Metric hex head bolts have a hex head and coarse or fine machine screw threads. Other available thread tolerances. Grade b bolts have looser tolerances and can be manufactured in a cold or hot forging process.

M8x1 25 stainless steel metric hex head cap screws. For din 912 or iso 4762 property class 12 9 socket head cap screws class 8 8 and stainless steel socket head cap screws have 6g tolerance. Us bolts head and wrench sizes hex bolt lag bolt square bolt and heavy hex bolt. For partially threaded the minimum thread length is longer for larger bolt sizes.

M5 x 8 stainless steel metric hex head cap screws. Note that all dimensional data and tolerances are given in inch units.