Shoulder Bolts

Custom fasteners Manufacturer

What are Shoulder Bolts

Shoulder bolts or shoulder screws also called step screws or Stripper Bolts, which are similar to a socket bolt with three distinct parts: the head, unthreaded section known as the shoulder, and the thread. This kind of screw consists of integral threads that are present on half or less of the screw shank. and the rest of the smooth section of the shaft allows the bolt to pass through a piece or piece of material and the ability to rotate or move around the screw axis. and the shoulder of the bolt has a larger diameter than the thread so the thread can fit through the material easily for fastening.

Types Of Shoulder Screws

They are a variety of materials that can be made for shoulder bolts and the most common materials are as below:

Materials:

  • Stainless steel
  • Alloy Steel
  • Mild Steel
  • Brass
  • Plastic

Grade

  • 18-8
  • 316
  • A2-70

Finish

  • Black Oxide
  • Plain
  • Customized

Screw Head Types

  • Slotted
  • Phillips
  • Square
  • Robertson
  • Hex
  • Specialty hex shapes

The most common types of shoulder bolts are slotted socket shoulder bolts, socket shoulder bolts, and plastic shoulder screws, socket shoulder bolts with nylon patches.

Metric Shoulder Bolts Sizes Dimensions

ISO 7379 – 1983 Hexagon Socket Head Shoulder Screws

Thread Size dM5M6M8M10M12M16M20
PPitch0.811.251.51.7522.5
dsNominal Size6.581013162025
max6.4877.9879.98712.98415.98419.9824.98
min6.4517.9519.95112.94115.94119.92824.928
bmax9.7511.2513.2516.418.422.427.4
min9.2510.7512.7515.617.621.626.6
dkFor plain heads10131618243036
knurled heads10.2213.2716.2718.2724.3330.3336.39
min9.7812.7315.7317.7323.6729.6735.61
kmax4.55.579111416
min4.325.326.788.7810.7313.7315.73
sNominal Size345681012
max3.084.0955.0956.0958.11510.11512.142
min3.024.025.026.028.02510.02512.032
tmin2.43.34.24.96.68.810
g1max2.52.52.52.52.52.53
g2max22.53.13.74.456.3
ds1max3.864.586.257.919.5713.3316.57
min3.684.46.037.699.3512.9616.3
emin3.444.585.726.869.1511.4313.72
rmin0.250.40.60.60.60.80.8

DIN 923 – 2012 Slotted Pan Head Shoulder Screws

Screw Thread(d)M1.4M1.6M2M2.5M3M4M5M6M8M10
PPitch0.30.350.40.450.50.70.811.251.5
bmin2.22.533.54.56791113.5
dkmax=nominal size3.544.5678.511131620
min3.323.824.325.826.788.2810.7312.7315.7319.67
dsmax=nominal size22.52.83.545.5781013
min1.9752.4752.7753.473.975.476.9647.9649.96412.957
kNominal Size0.911.21.51.82.42.73.13.84.6
max1.021.121.321.621.922.522.823.253.954.75
min0.780.881.081.381.682.282.582.953.654.45
nNominal Size0.30.40.50.60.811.21.622.5
max0.50.60.70.811.21.511.912.312.81
min0.360.460.560.660.861.061.261.662.062.56
tmax0.60.70.80.951.151.51.61.92.42.8
min0.450.50.60.750.91.21.31.51.92.3

DIN 927 – 1986 Slotted Shoulder Screws

Screw Thread dM1M1.2M1.4M1.6M2M2.5M3M3.5M4M5M6
PPitch0.250.250.30.350.40.450.50.60.70.81
bmin=nominal size1.81.82.22.52.83.54.55.5678
max2.052.052.452.753.053.84.85.86.37.368.36
dkmax=nominal size1.61.822.22.83.544.55.56.58
min1.5751.7751.9752.1752.7753.473.974.475.476.4647.964
nNominal Size0.20.250.250.30.30.40.50.50.60.81
min0.260.310.310.360.360.460.560.560.660.861.06
max0.40.450.450.50.50.60.70.70.811.2
tmin0.40.40.480.560.640.720.80.861.121.281.6
max0.520.520.630.740.840.951.051.211.421.632

Where to Buy shoulder bolts?

Shoulder bolts are normally cuoms made,You need to know the outer diameter of the screw, the length of the thread, the length and outer diameter of the step, the diameter and height of the screw head, and the size of the screw groove type.The material and finish you need according the different application,the production progress is mornally complecated.Heatfaster is a profsssional precious shoulder bolts manufacturer and supplier,factory in China,we can produce as per your drawing.

Hello, customers


My name is Betty Lee, I’m the business manager of Heatfastener. I have been in the fastener industry for more than 15 years. Feel free to contact us. I’m happy to provide you with the best service and products.

Email: Sales@heatfastener.com|Phone/Whatsapp/Wechat:+86 15018478409

CUSTOMER ALSO VIEW

Contact Us

Are you looking for screw manufacturers?

24hours online Service