Socket Set Screws

Description

Cup point: A headless screw threaded the entire length. It has a hexagonal drive at one end and a cup shaped indentation a the other end.

Half dog point: A set screw with a protruding tip with a flat surface at the end opposite that of the hexagonal drive.

Oval point: A set screw with an oval shaped point at the end opposite that of the hexagonal drive.

Flat point: A set screw with a flat surface at the end opposite that of the hexagonal drive.

Cone point: A set screw with a sharp conical-shaped point at the opposite end from the hexagonal drive.

Applications / Advantages

Cup point: The cup point is the most used style set screw. Designed for fast, permanent and semi-permanent location of parts on shafts with hardness differential of 10-15 Rockwell C points and where cutting in of cup edge on the shaft is acceptable.

Half dog point: intended for permanent setting. The point should fit closely to the diameter of the drilled hole against the flat. Often instead of a dowel pin.

Oval point: Preferred style for frequent reset on soft or hard shafts on an angle. Sometimes substituted for the cup point style.

Flat point: Designed for frequent resetting or relocating on hard steel shafts and where minimal damage to shafts is necessary. Ground flats on the shaft improves the contacts.

Cone point: For permanent setting on soft or hardened shafts. The deep penetration it offers gives this style set screw the highest tensional and axial holding power. For shafts of Rockwell hardness C15 or over, spot point half its depth. Can also be used as a pivot or hanger. When two set screws

Material

Screws shall be made from an alloy steel which conforms to the following chemical composition requirements (per product analysis)—Carbon: 0.28 to 0.50%; Phosphorus: 0.035% maximum; Sulfur: 0.040% maximum and stainless steel.

Pipe Plugs

Description

A plug having a tapered (0.750” diametral per 12”) thread extending its entire length and designed to have its threads mesh tightly with those of a taper-threaded hole. Both ends of the plug shall be flat and chamfered approximately 45°. The chamfer shall extend slightly below the root of the thread, and the edge between flat and chamfer shall be slightly rounded.

Applications / Advantages

The thread trunction is closely controlled at root and crest to assure metal to metal contact, preventing spiral leakage and forming a positive seal without the use of sealing compounds. Dry seal plugs can be used in American Standard Taper Dry seal Pipe Thread (NPT) tapped holes, but for the fullest protection against leakage, should be used in dry seal tapped holes which are taper reamed before tapping.

Material

High grade alloy steel.