Triangle-thread screw

1)Triangle-thread screw. 2)triangle teeth can serve for loose-resisiting, lower down the requirement of washer tackifier. Characters of Triangle-thread:1. To reduce the additonal cost and the related cost of tapping process.2. The design of triangle teeth can serve for loose-resisiting, lower down the requirement of washer tackifier.3. While tapping, the steel stress of mother piece is created with high density.4. Allowing the aperture difference of the large mother piece.5. It can be used in the holes of many kinds of material, and in all kinds of formations of punching, drilling, casting, squeezing,etc.6. After using high-frequency local carburization heat treatment, it can be used in thick deep-hole steel mother piece, and keep the strength of hardening-tempering heat treatment.7. It can tap the mother piece with glue, paits and remians of welding.8. No threading interference will be created.9. The pre-placed torque is always equivalent to or more than the standard of auto-lock screw.Four types of triangle self-tapping screws:1. After S TYPE general mechanical threaded, triangular screw are withdrawn, the general mechanical threaded screws with the same specification can replace them.2. C-type, can match with nuts.3. B-type, same thread like B type, suitable for thin plates and plastic parts.4. P-type, it can be used in plastic parts.

International:	GB, ANSI, JIS, DIN, BS, ISO etc.
Common head type (HEAD):	BINDING, BUTTON, BRAZIER, FLAT, OVAL, PAN, ROUND, TRUSS, HEX etc.
Common dirver type (DRIVER):	PHILLIPS, POZIDRIV, SLOTTED, TRIANGLE, SQUARE, HEX, SIX-LOBE, TRI-WING etc.
Threading size range:	2mm to 5mm.
Material:	SWRCH18, SWRCH22 etc.
The mechanic performance refers to the standards:	GB/T 3098.1-GB/T3098.17
The standard referred:	GB/T,DIA,ANSI and so on .

Triangle-thread screw