Anchor Screw

Anchor screw is a type of anchor fastener used for installation in concrete, brickwork, as well as wood and other types of base materials. This product is used to install the fastener in the material without using an additional wall plug. It is a thickened shaft with a diameter from 6 to 12 mm, with a low single-start or double-start thread.

The screw is fitted with various types of heads: it can have a hex, round, or countersunk shape for installation in the material.

Purpose and features of use

The anchor screw is designed for fastening various building structures to walls and floor/ceiling slabs. When installed in dense materials, it requires pre-drilling a hole. For installation in soft materials, a hole is not required, which simplifies and speeds up installation. During installation, the edges of the thread profile cut firmly into the material and lock securely in place, resulting in a strong connection resistant to various loads. Such anchors protect the installed structure from pull-out even under severe mechanical loads.

Installing this type of anchor has several features compared to other types of fasteners:

• High corrosion resistance of the connection. The anchor is made of materials capable of withstanding corrosion for a long time.
• Ability to install close to the edge, as well as with a small distance between fasteners. This is an advantage over expansion and drop-in anchors: installation does not cause chipping or cracking.
• Ability to apply load immediately after installing the anchor screw. This is an advantage over chemical anchors, which require time for the material to fully cure.
• Versatility: this type of fastener is suitable for hollow and solid building materials of various types.
• No stress on the base material, which reduces the risk of cracking.

An additional feature is the ability to disassemble the connection, unlike chemical anchors. An impact wrench or hand tool can be used to install the fastener.

Applications of anchor screws

Screws with a thickened shaft and low-pitch thread are used to address a wide range of construction tasks. They are used in the construction of low-rise buildings, for fastening various structures to walls and floor/ceiling slabs in concrete buildings, and can also be used in houses made of hollow brick, foam concrete, and aerated concrete blocks. Since pre-drilling is not required in low-density base materials, installation takes little time.

Options for using anchor screws:

• Installation of metal frames for drywall. Anchors provide a secure attachment of frame components to walls made of any material.
• Assembly of temporary structures, for example when installing formwork. The connection withstands loads from concrete and can later be disassembled.
• Installing wooden elements to walls, for example when installing door and window frames in country houses.
• Installation of tracks for sliding doors and other lightweight structures.

Using anchor bolts with a press washer makes it possible to use them for fastening thin sheet materials to walls and floor/ceiling slabs. The press washer increases the contact area with the surface and prevents cracking.

Ordering anchor screws from FLOK

FLOK supplies anchor screws in a wide range of sizes, in small and large batches.

Tuote	L	Poran	kpl/pcs
10x72	72	10	100/500
10x92	92	10	100/500
10x112	112	10	100/500
10x132	132	10	100/500
10x152	152	10	50/250
10x182	182	10	25/250
10x202	202	10	25/250

SKU	Type	L Anchor length mm	Size mm	d₀ Drill diameter, mm	h₁ Min. drilling depth mm	hnom Min. anchoring depth, mm	tfix Material thickness mm	dk Head diameter mm	T TORX key	Tinst Tightening torque, Nm	Allowable loads* in kN Non-cracked concrete C20/25		Pack, pcs	Weight, kg/1000 pcs
											Pull-out	Shear
70870	S-CS 6x50 F	50	6	5	55	45	5	9.8	T-25	12	2.9	2.9	200 / 1000	7.2
70872	S-CS 6x75 F	75	6	5	55	45	30	9.8	T-25	12	2.9	2.9	150 / 750	11.0
70874	S-CS 6x100 F	100	6	5	55	45	55	9.8	T-25	12	2.9	2.9	100 / 500	14.8
70876	S-CS 8x50 F	50	8	6	55	45	5	12.6	T-30	20	3.6	3.6	150 / 750	12.0
70878	S-CS 8x75 F	75	8	6	60	50	25	12.6	T-30	20	4.5	4.5	100 / 500	17.5
70880	S-CS 8x100 F	100	8	6	60	50	50	12.6	T-30	20	4.5	4.5	75 / 375	23.0