Dowel Pins

Inserted into receiving holes, dowel pins hold together parts of an assembly with friction. They may also be used as location pins. These pins are common in the automotive and aerospace industries as well as in furniture making.

Finish

Black Luster

This highly polished Holo-Krome® finish claims to resist corrosion and rust , while also acting as a lubricant in the driving process.
Black Oxide

An extremely thin attractive finish with minimal corrosion resistance. This coating reduces galling, improves lubrication of mating parts and reduces glare. This finish looks great when trying to achieve a stylish or "high-tech" look on exposed fastener heads.
Plain

Nothing has been done to this bare metal surface to improve appearance or corrosion resistance, which is very low if the material is steel. Often the surface has been oiled which improves lubricity. This finish is susceptible to rusting and corrosion in exterior environments. This most basic finish can be used when protection is not an issue or indoors.
Zinc

This finish, also know as zinc plating, zinc chromate or dichromate provides good corrosion resistance and is the standard for many hardware fasteners. It is an electroplated zinc layer covered with a chromate post-treatment. The zinc protects the steel from corrosion and the chromate layer protects the zinc from degrading. It is a popular finish because of its protection, value, and ease of coating. Slightly less corrosion resistant than yellow zinc, it is a versatile finish that is best used indoors. This finish should not be used in marine or high salt spray environments.

Grade

316

The second most common stainless steel grade, this material is stronger than grade 2, slightly weaker than grade 5,or generally as strong as medium to low carbon steel. It is on the low middle end of the grade scale. It is used in more severe corrosive environments than 304 stainless steel, as such it is used in more industrial settings, like process chemicals, textiles, bleaches, salt water and rubber. It is also used in surgical implants. The DIN/ISO denotation for a very similar grade is A4-70.
18-8

A general designation for the most common and popular stainless steel, (300 Series) referring to the 18% chromium and 8% nickel. It's strength has a range from the middle to low end of the grade scale. All 300 series stainless steel share the ratio of chromium to nickel with varying other elements improving different properties. It has higher corrosion resistance than the 400 series stainless steels and it is non-magnetic.
A2

A type of the most common stainless steel grade. It is comparable in strength to grade 2 materials, yet slightly weaker and easy to weld. This grade is always metric. The ASTM denotation for very similar grade is 304. The corrosion resistance and ease of fabrication are why this grade is used in food industry machines, appliances, architectural trim and aquatic fasteners.

Material

Stainless Steel

An iron based material with a minimum of 10.5% chromium. This material is known for its corrosion resistance and has varying strengths depending on the amount of chromium and nickel alloy. The chromium forms a protective layer when exposed to oxygen, keeping the steel underneath from corroding. There are over 150 grades of this material with the 304 and 316 series being the most common.
Steel

The most common material used in fasteners, this material is predominantly iron mixed with carbon. It offers the highest strength compared to other metals and elements, but is the least corrosion resistant. Also known as Carbon Steel.

Specification

ANSI/ASME B18.8.2

This is an ANSI/ASME standard is for the unified or inch series of dowel pins.
ASME B18.8.5M

This is an ANSI/ASME standard is for the metric series of dowel pins.
DIN 6325

Meets German standards for fully hardened steel with a dome at one end and an chamfered dome at the other.
DIN 7979D

Meets German standards for an internally threaded - fully hardened steel pin with a chamfered dome at one end and an air release flat. Equivalent to ISO 8735A.
ISO 2338

This specification is for unhardened steel or stainless steel pins with chamfered points at both ends.
ISO 7979

Meets German standards for an internally threaded - fully hardened steel pin with a chamfered dome at one end and an air release flat. Equivalent to ISO 8735A.
ISO 8735

Equivalent to DIN 7979D an internally threaded - fully hardened steel pin with a chamfered dome at one end equipped with an air release flat.

Style

Cross

This style has a threaded hole going through the length of the cylinder. There is a drive at one end of the dowel so the threaded hole in the cylinder can be lined up once the dowel has been inserted into a work piece. This pin is often used in wood working and furniture industries.
Oversized

Oversized dowel pins are designed to have slightly larger than standard nominal diameters for use in holes that have been enlarged by machining or wear.
Oversized Pull

Oversized dowel pins are designed to have slightly larger than standard nominal diameters for use in holes that have been enlarged by machining or wear. The pull style of dowel pin features internal threading to allow for pin removal with a standard screw.
Pull

The pull style of dowel pin features internal threading to allow for pin removal with a standard screw.
Standard

This style has a diameter that deviates very little from the nominal diameter for an average fit.