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DIN603 Stainless Steel A2-70 SS304 SS316 Carriage Bolt , Mushroom Round Head With Square Neck Bolts

T DIN603 Stainless Steel A2-70 SS304 SS316 Carriage Bolt , Mushroom Round Head With Square Neck Bolts

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  • M8 M10 M12 M14 M16 M18 M20 M24
  • HNF
  • HNF20170611

DIN603 Stainless Steel A2-70 SS304 SS316 Carriage Bolt , Mushroom Round Head With Square Neck Bolts


Round Heads and Square Necks, also the less common Ribbed Neck. Available in Steel, Grade 5, Grade 8 & Stainless.
A carriage bolt, coach bolt or round head square neck bolt
[1] is a form of bolt used to fasten metal to wood.



CLASS 4.6;4.8 5.8 6.8 8.8 9.8 10.9 12.9
SIZE ALL SIZEM12 >M12M8 >M8 ALL SIZE
COMMON  MATERIALS  1008  ~  1015                           1012  ~1017                 10B21 / 1022   10B21  10B33 10B21 10B33 10B33  /  SCM435/ML20MnTiB SCM435              
ML08AL        SWRCH8A~         SWRCH15A SWRCH15A~ SWRCH18A SWRCH22A 35K                     
35ACR                           10B35
AISI 4140
HEAT TREATMENT(YES/NO) NO                                                               YES


 

It is distinguished from other bolts by its shallow mushroom head and that the shank cross-section of the bolt is circular for most of its length, as usual, but the portion immediately beneath the head is formed into a square section.  This makes the bolt self-locking when placed through a square hole in a metal strap, or a round hole in most wood. This allows the fastener to be installed with only a single tool, a spanner or wrench, working from one side. The head of a carriage bolt is usually a shallow dome. The squared section is of the same size as the diameter of the bolt shank, with a plain unthreaded shank.

DIN603 Stainless Steel A2-70 SS304 SS316 Carriage Bolt , Mushroom Round Head With Square Neck Bolts


DIN603
 Carriage Bolts have a square shoulder under a round head and are used with a nut and washer.
· The shoulder of the carriage bolt pulls into the wood when tightening and prevents the bolt from turning
· Bolt length is measured from under the head of the to the tip of the bolt
· Carriage bolt lengths of 4" and shorter are fully threaded
· Depending upon the manufacturer, stainless steel carriage bolts over 4" may be fully threaded or have a smooth 2" or more between the head and beginning of threading
· Our stainless steel carriage bolts are available in both 18-8 and Type 316 stainless steel (for salt water exposure)

The design of carriage bolts allows you to install the fastener without a helping hand. Below the half-round head of a carriage bolt sits a squared shoulder. When you drill a hole through material sized for the bolt, the head of the bolt will remain in place while you tighten the fastener onto the material. Using a hole too large for the bolt will result in the bolt head spinning in the material. This will not allow the carriage bolt to tighten in the material.
 
When joining pieces of wood together using a carriage bolt, the square head on the bolt can become stripped in the hole, making them hard to tighten. To solve this problem, insert a few finishing nails in the hole beside the bolt before hammering the bolt into place. The nails will fill the gaps between the hole and bolt to keep it from spinning.

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