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Set of spiral steel wire spiral tap ST screw tap / tap tap tap screw sheath.

This is a special thread for steel wire sleeve! How big is the size of the screw sleeve?!

price:USD$70.00
discount 70% in 2018-09-22 to 2018-09-24
price: USD$ 49.00
freight :USD$18.00,(Express)
freight :USD$7.00,(Postal parcel)
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Thread sheath of our company, through strict inspection, communications, electronics, machinery and other industries use.
Detailed description of the product
Lo sets of steel is a new type of internal thread fasteners made of cold-rolled Diamond Stainless steel wire with high strength, high precision and smooth surface precision winded, for internal and external thread concentric body, steel screw is sheathed in the threaded hole, can form a line with the corresponding standards of high precision internal thread hole. Its performance is better than that of internal thread formed by direct tapping.
Characteristics of steel wire screw sleeve
1, the free state of steel screw diameter than the preloaded screw diameter is slightly larger, when assembled with special tools make it due to torsion and smaller diameter, screwed into the screw hole, after installed wire Lo sets produced similar spring expansion effect, which is firmly fixed in the hole, not with the movement of the screw motion.
2, increase the bearing capacity and fatigue strength of threaded connections, the elastic connection form of steel wire Lo sets of screws and installation of steel wire Lo sets of holes, thus eliminating the pitch and tooth type half angle error for the screw thread, in accordance with the length of the thread of no uniform load distribution, thus increasing the strength of internal thread. It can also reduce the fatigue strength of the thread connection of the parts.
3, wear resistance of steel wire Lo sets by cold rolling wire hard bent, like a mirror surface reduces friction and wear, can make the screw due to friction torque generated is reduced by 90%, thus the maximum pretension torque and screw tension with the smallest screw torque, and prevent the bolt from loosening the screws, all kinds of material and in the best use of the state level.
4, corrosion resistance: because of the stainless steel screw sleeve excellent corrosion resistance, make it in a variety of materials and the usual environmental conditions to ensure its applicability, so that the use of steel wire screw assembly will not rust knot stagnant.
5, heat resistance: steel screw thread at high temperature can prevent thread connection stuck or scratch.
6, compared with ordinary standard internal thread, under the same conditions, in order to use the yield limit as much as possible, the screw with smaller size and higher strength can be used in order to save material, reduce weight and reduce volume.
The steel screw sleeve can lock the screw in the thread hole, and the screw can not be loosened when the shock and shock are happened, and the process performance is better than the common locking device.

Note: the length of the screw sleeve is equal to the number of the thread and the number of the screw
Example: M6*2.5D steel screw sleeve, the actual length after installation =1*12.2=12.2mm
Buyers must read

The store and shop wholesale business combination, the occasional individual products are temporarily out of stock phenomenon, but we will give buyers the shipment as soon as possible, be sure to advance dispatch please contact the seller to determine a good shot. Shopkeeper phone: 025-52255576

Freight description

Express selection:

First rhyme, Huitong, Yuantong, STO, the other can be issued every day, SF, etc. (postage is more expensive). Buyers need to specify the courier, please note, or communicate with customer service.

Postage note:

The hardware fasteners are various in specifications and different in weight. The postage is only for reference, and the actual postage should be agreed with the seller.

Buyers need to know

Dispatch note:

The store and shop wholesale business combination, the occasional individual products are temporarily out of stock phenomenon, but we will give buyers the shipment as soon as possible, be sure to advance dispatch please contact the seller to determine a good shot.