How much torque do I need to tighten a screw?

How much torque do I need to tighten a screw?

Tightening torques – Fasteners with Hexagon and Hexalobular Socket and Flat Heads

Maximum Tightening Torques (Nm) ISO 4026 / DIN 913 ISO 4027 / DIN 914 ISO 4028 / DIN 915
Screw Standard DIN 6912 ISO 4029 / DIN 916
M16 180 90
M18 140
M20 280 140

What is the torque setting for bolts?

Typical maximum recommended thightening torques for metric bolts

Size (mm) Typical Maximum Tightening Torque (Nm)
Property Class
M6 11.8 19.9
M8 28.8 48.3
M10 57.3 95.7

Does screw length affect torque?

Tightening torque is not influenced by the bolt length so easy to standardize. The Bolt efficiency will be low due to wide tolerance of the tension.

How strong is A2-70?

Therefore, A2-70 is an austenitic, acid proof stainless grade (usually 304 material – 304 or 304L) which has been cold worked to provide a minimum tensile strength of 700N/mm² (MPa). We stock round bar from 10 mm to 60 mm diameter, and hexagons from 10 mm to 37 mm AF.

How strong is a A2-70 bolt?

A Bolt Marked A2-70 Is A 304 Stainless Steel Bolt With A 700 N/mm2 Tensile Strength (See Below Table). The -70 Representing The Tensile Strength Divided By 10.

What is the torque for 1/2 bolt?

ASTM A449 / SAE Grade 5*

Bolt Size TPI Tightening Torque (ft lbs)
1⁄2 13 38
9⁄16 12 54
5⁄8 11 75

Do screws need to be torqued?

Why Torque Matters Proper torqueing is vital to the function of the bolt and is determined by several, often conflicting factors. A properly tightened bolt has its material stretched slightly, but not beyond its elastic limit. A correctly-tightened bolt shares the preload with workpieces.

How strong are M3 screws?

Minimum Ultimate Tensile Load

Thread d (mm) Pitch P (mm) Property Class
M3 0.50 5230
M3.5 0.60 7050
M4 0.70 9130

What is the torque of stainless steel hex bolt a2-70?

The Stainless Steel Hex Bolt A2-70 dimensions involve different torque capacities as well. The smaller ones such as the M4 sizes have about 2.7Nm torque while the larger ones have larger torque values.

What is the size of a2-70 bolt material?

Manufacturer of A2 70 Bolt Material according to standard, Check A2-70 Bolt Size Chart Product name A2-70 Stainless Steel Bolts Surface treatment Passivation /plain A2-70 Stainless Steel Bolts Size M2 – M100 A2-70 Stainless Steel Bolts Diameter M3-M60 A2-70 Stainless Steel Bolts Length 6mm-500mm

What is a2-50 screw made of?

We manufacture the A2-50 Screw which is made from 304 steel as well but is less commonly used. It is an austenitic stainless that is mostly non magnetic. The material could become magnetic when cold worked. There are A2-80 Stainless Steel Nuts as well, which are used in acid proof systems with minimum tensile strength.

What is the difference between a2-80 bolts and SS 304 bolts?

The A2-80 Bolts are also SS 304 Bolts and the SS 304 Nut Bolt is usually added in applications which need much strength rather than corrosion resistance. A different type 18-8 Stainless Steel Bolts which has slight difference in composition opposed to most 304 Stainless Steel Bolts and it is made up of 302 or 304 stainless steel.