Galvanized Stainless Steel Expansion Screws and Extended Expansion Bolts

• Customization: Available
• Finish: Zinc Plated
• Head Type: Hex Head
• Model NO.: M6*50-M12*120
• Length: 80mm
• Material: Stainless Steel
• Standard: ANSI, GB
• Thread Type: Full Thread
• Other Materials: Stainless Steel/Carbon Steel
• Surface Treatment: Plain,Galvanzied,Nickel Plated,Black Plated
• Head Shape: Round,Hexagonal,Flat,Pan, Hexagonal Flange
• Customized: Customized
• Transport Package: Bag+Carton+Pallet
• Trademark: Luning Machinery
• Origin: China
• HS Code: 7318140090
• Package Size: 37.00cm * 30.00cm * 14.50cm
• Package Gross Weight: 20.000kg

Product Description

Product Description

Expansion screws are a special type of threaded connector primarily used to secure pipeline supports or equipment to walls, floors, or columns. It consists of several parts, including countersunk bolts, expansion tubes, flat washers, spring washers, and hex nuts. The working principle of expansion screws is to use wedge-shaped slopes to promote expansion and generate frictional grip force, thereby achieving a fixed effect.
When using expansion screws, the first step is to drill holes of the corresponding size on the fixed body with an impact drill, then insert the bolt and expansion tube into the holes and tighten the nut. After tightening, the large head at the end of the bolt will expand the metal sleeve, filling the entire hole and fixing the expansion bolt to the ground or wall.
There are various grades and materials for expansion screws, among which bolts are classified into multiple grades such as 45, 50, 60, 70, 80, etc. Expansion screws have strong load-bearing capacity.
 

Product Parameters

 

Type	L(mm)	l(mm)	D(mm)	d(mm)	The size of the drilled hold(mm)
M6*50	50	35	6	10	10
M6*60	60	40	6	10	10
M6*70	70	50	6	10	10
M6*80	80	55	6	10	10
M8*60	60	40	8	12	12
M8*70	70	50	8	12	12
M8*80	80	55	8	12	12
M8*100	100	70	8	12	12
M8*120	120	90	8	12	12
M10*60	60	35	10	14	14
M10*70	70	45	10	14	14
M10*80	80	55	10	14	14
M10*100	100	75	10	14	14
M10*120	120	90	10	14	14
M12*80	80	50	12	16	16
M12*100	100	70	12	16	16
M12*120	120	90	12	16	16

 

 

 

Product principle

Detailed Photos