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Standards

Torque Wrench Types

Different Types Of  Torque Wrench

William tools’ s Torque wrenches . Combining high structural durability and torque characteristics of higher accuracy than ISO inspection standards, load-bearing capacity and durability, the torque wrenches of Wtools not only comes with aesthetic, but also various types of different designs which can meet your demands.

The main torque wrench types are as the following pictures describe.

Ratchet Handle Types

Different Types Of Ratchet Handles

A ratchet handle is a combination of a crank and ratchet that allows quicker, easier, and safer machinery adjustment. The ratchet design allows convenient reversal of the handle direction.

The main ratchet handle types are as the following pictures describe.

ANSI and DIN Standard Dimension

Roller chains are used in power transmission design of all kinds and in many specialized industries. Roller chain configurations include standard, heavy duty, double pitch for light loads, attachment options and many application-specific geometries. There are many styles of chain; those covered in this search form is characterized by ANSI and BS/DIN standard sizes.

Dimension of DriveANSIDIN
Length (in/mm) Min.Width (in/mm) Max.Heigth (in/mm) Max.Length (mm) Man.Width (mm) Max.Heigth (mm) Max.
1/4″ Dr.4-3/8″
(111)
1-1/8″
(28.6)
19/32″
(15.1)
1502524
3/8″ Dr.5-3/4″
(146)
1/7/8″
(47.6)
1-7/8″
(22.2)
2003536
1/2″ Dr.9-1/2″
(241)
1-15/16″
(49.2)
1″
(25.4)
3005045
3/4″ Dr.17″
(432)
2-7/8″
(73.0)
1-3/8″
(34.9)
6307060
1″ Dr.20″
(508)
3-7/8″
(98.4)
1-3/4″
(44.5)
9009080

Related Products

Fully Polished and Flex. Function Ratchet Handle

2-Tone Plastic Grip and Flex. Function Ratchet Handle

William Tools Standard

Dimension of DriveTest Load Min. (NM)Material of BodyMaterial of DriveHardness of BodyHardness of DriveWidth of Drive
(mm)
1/4″ Dr.78Cr-V steelCr-Mo steelHrc40~45Hrc48~526.27~6.35
3/8″ Dr.256Cr-V steelCr-Mo steelHrc40~45Hrc48~529.45~9.52
1/2″ Dr.646Cr-V steelCr-Mo steelHrc40~45Hrc48~5212.60~12.70

STANDARD BOLT TIGHTENING TORQUE

Bolt Size mmPitch mmBolt Hex mmStrength Grade (N·m)
4.66.88.810.912.9
30.55.50.511.011.351.902.27
40.770.951.912.543.574.29
50.882.284.566.098.5610.3
61.0103.927.8510.514.717.7
81.25139.4818.925.335.542.7
101.51719.138.150.971.586.8
121.751932.665.186.9122146
142.02251.9104139195234
162.02479.9160213299359
182.527110220293413495
202.530156312416585702
222.532211422563792950
243.03627053971910101213
273.041398795106014901789
303.5465401080144020252430

Standard Bolt Tightening Tension

Bolt SizeStrength Grade (N)
6.88.810.912.9
M31,6902,1763,0583,675
M42,5403,8225,3416,419
M54,7906,2238,77110,486
M66,7508,82012,34814,798
M812,40013,37722,73627,342
M1019,75025,67636,16243,414
M1228,79037,53452,92063,210
M1439,54051,45072,52086,730
M1654,42071,54099,960120,540
M1866,13086,240121,520145,040
M2085,040111,720156,800188,160
M22106,320138,180195,020234,220
M24122,450160,720225,400270,480
M27161,290210,700295,960355,740
M30196,550256,760360,640433,160

Mechanical Properties Of Fasteners

Strength gradeTensile strengh N/mm2HardnessYield strength N/mm2
Brinell HardnessRockwell Hardness
Min.Max.Min.Max.HRBHRCMin.
Min.Max.Min.Max.
3.6333480901504982196
4.63925391101706288235
4.8314
5.64906861402157797294
5.8392
6.658878417024588102353
6.8421
6.9529
8.87849802253001831627
10.998011762803652738882
12.91176137233042534441058

Relation Formula Between Bolt and Tightening Torque

A tightened body tightening force stabilization agent capable of minimizing a variation in torque coefficient suitable for controlling a tightened body tightening force by a torque method, comprising, as an active ingredient, a polymer of unsaturated chain hydrocarbon with a carbon quantity of four; a method for stabilization of tightened body tightening force, comprising the steps of applying the polymer to at least either of a thread part such as a bolt member and a washer and the threaded part or seat surface of the tightened body and performing a tightening operation.

Strength gradeTensile strengh N/mm2HardnessYield strength N/mm2
Brinell HardnessRockwell Hardness
Min.Max.Min.Max.HRBHRCMin.
Min.Max.Min.Max.
3.6333480901504982196
4.63925391101706288235
4.8314
5.64906861402157797294
5.8392
6.658878417024588102353
6.8421
6.9529
8.87849802253001831627
10.998011762803652738882
12.91176137233042534441058

T=kdF
K=1/2{(d1/d)tan(θ’+β)+(d2/d)}≒0.2
θ’=tan-1μ1/(cosα/2)

T: Tightening torque ——————–N·m
K: Torque coefficient
d: Normal bolt size ———————-mm
F: Axial tension ————————-N
d1: Pitch diameter ———————–mm
d2: Pitch diameter ofunder head ———mm
μ1: Thread friction coeffcient
μ2: Underhead friction coefficient
α: Half angle of screw thread
β: Lead angle
θ’: Angle off riction svrew thread

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