Carriage Bolts
Carriage bolts, also known as coach bolts, are a type of fastener designed for use with wood and similar materials. They are typically used to fasten metal to wood or wood to wood. Carriage bolts have a distinctive appearance with a rounded, domed head and a square section beneath the head that prevents them from turning when tightened. The square section fits into a square hole in the wood, providing a secure and stable connection.
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Stainless Steel Carriage BoltsDetailDimension Table
Commodity: Stainless Steel Carriage Bolts
Material: Made from stainless steel, these screws have good chemical resistance and may be mildly magnetic. They are also known as A2/A4 stainless steel.
Head Type: Round Head and A square neck.
Length: is measured from under the head.
Thread Type: Coarse Thread, Fine Thread. Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch. Fine and extra-fine threads are closely spaced to prevent loosening from vibration; the finer the thread, the better the resistance.
Standard: Dimensions meet ASME B18.5 or DIN 603 specifications. Some also meet ISO 8678. DIN 603 is functionally equivalent to ISO 8678 with slight differences in head diameter, head height, and length tolerances.Screw Thread M5 M6 M8 M10 M12 M16 M20 d P Pitch 0.8 1 1.25 1.5 1.75 2 2.5 b L≤125 16 18 22 26 30 38 46 125＜L≤200 22 24 28 32 36 44 52 L＞200 / / 41 45 49 57 65 dk max 13.55 16.55 20.65 24.65 30.65 38.8 46.8 min 12.45 15.45 19.35 23.35 29.35 37.2 45.2 ds max 5 6 8 10 12 16 20 min 4.52 5.52 7.42 9.42 11.3 15.3 19.16 k1 max 4.1 4.6 5.6 6.6 8.75 12.9 15.9 min 2.9 3.4 4.4 5.4 7.25 11.1 14.1 k max 3.3 3.88 4.88 5.38 6.95 8.95 11.05 min 2.7 3.12 4.12 4.62 6.05 8.05 9.95 r1 ≈ 10.7 12.6 16 19.2 24.1 29.3 33.9 r2 max 0.5 0.5 0.5 0.5 1 1 1 r3 max 0.75 0.9 1.2 1.5 1.8 2.4 3 s max 5.48 6.48 8.58 10.58 12.7 16.7 20.84 min 4.52 5.52 7.42 9.42 11.3 15.3 19.16 -
DIN 603 Stainless Steel Carriage Head BoltsDetailDimension Table
DIN 603 Stainless Steel Carriage Bolts are made from stainless steel, these screws have good chemical resistance and may be mildly magnetic. They are also known as A2/A4 stainless steel. Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch. Fine and extra-fine threads are closely spaced to prevent loosening from vibration; the finer the thread, the better the resistance.
Screw Thread M5 M6 M8 M10 M12 M16 M20 d P Pitch 0.8 1 1.25 1.5 1.75 2 2.5 b L≤125 16 18 22 26 30 38 46 125＜L≤200 22 24 28 32 36 44 52 L＞200 / / 41 45 49 57 65 dk max 13.55 16.55 20.65 24.65 30.65 38.8 46.8 min 12.45 15.45 19.35 23.35 29.35 37.2 45.2 ds max 5 6 8 10 12 16 20 min 4.52 5.52 7.42 9.42 11.3 15.3 19.16 k1 max 4.1 4.6 5.6 6.6 8.75 12.9 15.9 min 2.9 3.4 4.4 5.4 7.25 11.1 14.1 k max 3.3 3.88 4.88 5.38 6.95 8.95 11.05 min 2.7 3.12 4.12 4.62 6.05 8.05 9.95 r1 ≈ 10.7 12.6 16 19.2 24.1 29.3 33.9 r2 max 0.5 0.5 0.5 0.5 1 1 1 r3 max 0.75 0.9 1.2 1.5 1.8 2.4 3 s max 5.48 6.48 8.58 10.58 12.7 16.7 20.84 min 4.52 5.52 7.42 9.42 11.3 15.3 19.16
