Hexagonal Head Bolt Weight Chart: Comprehensive Guide

Hexagonal Head Bolt Weight Chart Comprehensive Guide

Hexagonal head bolts are divided into two types: external hex bolts and internal hex screws.

Depending on the way they connect and bear force, there are ordinary types and those designed for hinged holes. Bolts for hinged holes must match the size of the hole and are used when subjected to lateral forces.

According to the shape of the head, there are hexagonal, round, square, and countersunk heads among others. Countersunk heads are generally used in places where a smooth surface without protrusions is required after connection, as they can be screwed into the parts. Round heads can also be screwed into parts. Square heads can be tightened more, but their size is quite large. Hexagonal heads are the most commonly used.

Hexagonal Head Bolt Weight Chart Comprehensive Guide

Furthermore, to meet the need for locking after installation, there are bolts with holes in the head or the rod. These holes prevent the bolt from loosening when subjected to vibration.

Hexagon Head Bolt Material

Currently, the market mainly consists of hexagon socket screws made from three types of materials: carbon steel, stainless steel, and copper.

(1) Carbon Steel.

We classify this into low carbon steel, medium carbon steel, high carbon steel, and alloy steel based on the carbon content in the material.

  1. Low carbon steel with C% ≤0.25% is commonly referred to as A3 steel in China. It’s essentially known as 1008, 1015, 1018, 1022, etc., abroad. It’s primarily used for products without hardness requirements like 4.8-grade bolts, 4-grade nuts, and small screws. (Note: Drilling tail nails mainly use 1022 material).
  2. Medium carbon steel contains 0.25%-0.45% carbon. It’s not currently in widespread use in the market.
  3. Alloy steel: This is ordinary carbon steel with added alloy elements, enhancing some unique properties of the steel, such as 35, 40 chrome molybdenum, SCM435, 10B38. Fangsheng screws primarily use SCM435 chrome molybdenum alloy steel, which contains C, Si, Mn, P, S, Cr, Mo.

(2) Stainless Steel.

Performance grade: 45, 50, 60, 70, 80. The primary division is into austenitic (18%Cr, 8%Ni), which has good heat resistance, corrosion resistance, and weldability.

A1, A2, A4 Martensite, 13%Cr, has poorer corrosion resistance, high strength, and good wear resistance. C1, C2, C4 Ferritic stainless steel, 18%Cr, has better forgeability and stronger corrosion resistance than martensite.

The current market import materials are mainly Japanese products. The primary division by grade is SUS302, SUS304, SUS316.

(3) Copper.

The commonly used material is brass zinc-copper alloy. The market mainly uses H62, H65, H68 copper for standard parts.

Carbon steel products use the following sheet metal: serial number, type, and optional material. 1. 4.8-grade hexagon screws 1008K 1010 1015K 2. 6.8-grade hexagon screws.

Hexagonal Head Bolt Weight Chart

Specifications
(Diameter × Length)
Weight of a Thousand Bolts
(Kg)
Without NutsWith Nuts
M10×302940
M10×403546
M10×504152
M10×604758
M12×304157
M12×404965
M12×505874
M12×606783
M12×707692
M12×8085101
M14×406994
M14×5081106
M14×6093118
M14×70105130
M14×80117142
M14×90129154
M16×4092126
M16×50106140
M16×60122156
M16×70138172
M16×80154188
M16×90170204
M16×100185219
M20×50183245
M20×60205267
M20×70230292
M20×80255317
M20×90279341
M20×100304366
M20×110329391
M20×120354416
M20×130378440
M22×60250326
M22×70280356
M22×80310386
M22×90339415
M22×100369445
M22×110399475
M22×120429505
M22×130459535
M22×140489565
M22×150519595
M22×160548624
M24×80388500
M24×90424536
M24×100459571
M24×110495607
M24×120531643
M24×130566678
M24×140602714
M24×150637749
M24×160673785
M27×80519687
M27×90564732
M27×100609777
M27×110654822
M27×120699867
M27×130744912
M27×140789957
M27×1508341002
M27×1608791047
M27×1709241092
M27×1809691137
M30×100765999
M30×1108201054
M30×1208751109
M30×1309311165
M30×1409861220
M30×15010421276
M30×16010981332
M30×17011541388
M30×18012101444
M30×19012661500
M30×20013221556
M30×21013781612
M30×22014341868
M36×11012461617
M36×12013261697
M36×13014061777
M36×14014861857
M36×15015661937
M36×16016462017
M36×17017262097
M36×18018062177
M36×19018862257
M36×20019662337
M36×21020462417
M36×22021262497
M36×23022062577
M36×24022862657
M42×15022232822
M42×16023322931
M42×17024413040
M42×18025503149
M42×19026593258
M42×20027683367
M42×21028773476
M42×22029863585
M42×23030953694
M42×24032043803
M42×25033133912
M48×15030053962
M48×16031474104
M48×17032894246
M48×18034314388
M48×19035734530
M48×20037154672
M48×21038574814
M48×22039994956
M48×23041415098
M48×24042835240
M48×25044325389
M48×26045745531
M48×28048585815
M48×30051426099

Hexagonal Nut Specification and Weight Table

dSHDApproximate Weight of 1000 Steel Nuts (kg)
Nominal SizeToleranceNominal DimensionTolerance
Rough ManufacturingSemi-Precision Manufacturing
610-0.365±0.48±0.3811.52.317
814-0.43616.25.674
1017-0.528±0.58±0.4519.610.99
12191021.916.32
-142211±0.70±0.5525.425.28
16241327.734.12
-18271431.244.19
20301634.661.91
-2232-11836.975.94
243619±1.00±0.6541.6111.9
-27412247.3168
30462453.1234.2
3655-1.22863.5370.9
426532±1.50±0.8075.5598.6
48753886.5957.3

Note:

  1. If possible, do not use the dimensions inside the parentheses.
  2. GB41-66 produces coarse thread (Type A); GB45-66 produces coarse and fine threads (Type A and B).
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Shane
Author

Shane

Founder of MachineMFG

As the founder of MachineMFG, I have dedicated over a decade of my career to the metalworking industry. My extensive experience has allowed me to become an expert in the fields of sheet metal fabrication, machining, mechanical engineering, and machine tools for metals. I am constantly thinking, reading, and writing about these subjects, constantly striving to stay at the forefront of my field. Let my knowledge and expertise be an asset to your business.

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