Fine Pitch Wire Thread Insert

Fine Pitch Wire Thread Insert is a wire thread insert with a fine-pitch thread design. Compared with coarse-pitch wire thread inserts of the same category, its thread spacing is smaller, providing more engagement teeth within the same nominal diameter. This distributes the load more evenly and enhances the vibration resistance and sealing performance of the threaded connection. Made from precision-wound diamond-shaped stainless steel wire, it forms high-precision internal threads in soft materials like aluminum or plastic, or in damaged threaded holes, effectively addressing issues such as thread stripping, wear, and corrosion. It provides a reliable thread reinforcement solution for precision equipment, hydraulic systems, and other applications requiring high stability and sealing performance.

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Product Features

Fine thread design: Smaller thread pitch with more engagement teeth, ensuring more even load distribution and better vibration and anti-loosening performance compared to coarse-pitch inserts. Suitable for high-frequency vibration conditions.
Precision thread forming: Made from diamond-shaped stainless steel wire, forming high-precision internal threads that ensure coaxial alignment and assembly accuracy.
Wear and corrosion resistance: Stainless steel provides excellent wear and corrosion resistance, suitable for humid, chemical, or other harsh environments, extending thread lifespan.
Thread repair function: Can quickly repair damaged fine-thread holes without replacing the parent material, significantly reducing equipment maintenance costs.
Superior sealing performance: The fine thread design provides a larger contact surface, enhancing connection sealing, suitable for hydraulic, pneumatic, and other leak-sensitive applications.

Applications

Precision Instruments: Achieve high-precision thread connections in critical components of medical devices and measuring instruments, ensuring stable and reliable operation.
Hydraulic & Pneumatic Systems: Reinforce threads on components such as hydraulic valves and cylinders, improving sealing performance and preventing medium leakage.
Aerospace: Strengthen fine-thread connections in aluminum-based lightweight components for aerospace applications, meeting high-reliability assembly requirements.
Automotive Manufacturing: Used in high-vibration components such as gearboxes and engines to enhance thread vibration resistance and anti-loosening performance.

Product Specifications

NominalDiameterd	Pitchp	Nominall xd	length cew aloo		Frestateomin	uterdiametermax	BitDiameterΦ	DianebrmborMumbe oftet	Pitchp	Nominal lengtMhmbercftF ems ate outer diameter					DrillDiameterΦ
			mm	Numberoflaps						xd	mm	W	min	max
2	0.4	1d	2.00	2.9	2.6	2.8	2.1	2-56	0.435	1d	2.2	3.0	2.7	2.9	2.4
		1.5d	3.00	4.9						1.5d	3.3	5.25
		2d	4.00	6.9						2d	4.4	7.4
		2.5d	5.50	8.9						2.5d	5.5	9.6
2.5	0.45	1d	2.50	3.5	3.3	3.5	2.6	4-40	0.635	1d	2.9	2.8	3.66	4.04	3.1
		1.5d	3.75	5.9						1.5d	4.3	4.8
		2d	5.00	8.1						2d	5.8	6.8
		2.5d	6.25	10.5						2.5d	7.2	8.8
3	0.5	1d	3.00	3.9	3.8	4.0	3.1	6-32	0.794	1d	3.5	2.8	4.52	4.90	3.8
		1.5d	4.50	6.3						1.5d	5.3	4.8
		2d	6.00	8.7						2d	7.0	6.7
		2.5d	7.50	11.1						2.5d	8.3	8.7
4	0.7	1d	4.00	3.7	5.1	5.3	4.2	8-32	0.794	1d	4.2	3.5	5.20	5.56	4.4
		1.5d	6.00	6.1						1.5d	6.3	5.9
		2d	8.00	8.4						2d	8.3	8.3
		2.5d	10.00	10.9						2.5d	10.5	10.7
5	0.8	1d	5.00	4.3	6.4	6.6	5.2	10-32	0.794	1d	4.8	4.1	6.19	6.68	5.1
		1.5d	7.50	6.9						1.5d	7.2	6.8
		2d	10.00	9.7						2d	9.6	9.5
		2.5d	12.50	12.3						2.5d	12.1	12.1
6	1.	1d	6.00	4.2	7.6	7.9	6.3	1/4-20	1.270	1d	6.4	3.4	7.86	8.38	6.7
		1.5d	9.00	6.9						1.5d	9.5	5.7
		2d	12.00	9.6						2d	12.7	8.0
		2.5d	15.00	12.3						2.5d	15.9	10.3
8	1.25	1d	8.00	4.7	9.9	10.1	8.3	5/16-18	1.411	1d	7.9	4.0	9.64	10.16	8.4
		1.5d	12.00	7.4						1.5d	11.9	6.6
		2d	16.00	10.6						2d	15.9	9.3
		2.5d	20.00	13.5						2.5d	19.8	11.9
10	1.5	1d	10.00	5.0	12.1	12.5	10.4	3/8-16	1.588	1d	9.5	4.4	11.48	11.99	10
		1.5d	15.00	8.1						1.5d	14.3	7.2
		2d	20.00	11.2						2d	19.1	10.1
		2.5d	25.00	14.2						2.5d	23.8	12.9
12	1.75	1d	12.00	5.2	14.4	14.8	12.4	7/16-14	1.814	1d	11.1	4.5	13.36	13.99	11.6
		1.5d	18.00	8.4						1.5d	16.7	7.4
		2d	24.00	11.7						2d	22.2	10.3
		2.5d	30.00	14.7						2.5d	27.8	13.1
14	2	1d	14.00	5.6	16.8	17.2	14.5	1/2-13	1.954	1d	12.7	4.8	15.16	15.80	13.2
		1.5d	21.00	8.8						1.5d	19.1	7.9
		2d	28.00	12.0						2d	25.4	10.9
		2.5d	35.00	15.2						2.5d	31.8	13.9
16	2	1d	16.00	6.5	19.0.	19.4	16.5	5/8-11	2.309	1d	15.9	5.3	18.84	19.48	16.6
		1.5d	24.00	10.1						1.5d	23.8	8.3
		2d	32.00	13.8						2d	31.8	11.8
		2.5d	40.00	17.5						2.5d	39.7	15.0
20	2.5	1d	25.00	6.3	23.7	24.2	20.6	3/4-10	2.540	1d	19.1	5.9	22.36	23.00	19.7
		1.5d	30.00	10.0						1.5d	28.6	9.4
		2d	40.00	13.7						2d	38.1	13.0
		2.5d	50.00	17.4						2.5d	47.6	16.6
24	3	1d	24.00	6.2	28.6	29.1	24.8	7/8-9	2.822	1d	22.2	6.3	25.93	26.72	23
		1.5d	36.00	10.0						1.5d	33.3	10.0
		2d	48.00	14.0						2d	44.5	13.7
		2.5d	60.00	18.0						2.5d	55.6	17.4

Compliant with

Explain

Nominal diameter of screw sleeve (nominal diametero screw)

Thread pitch

Screw sleeve infre state, FS screw sleeve number

中

Selection ofdilbit diameter forFS screwdriling

Screw sleeve infre state, outer diameter ofFSscrewsleeve

Screw sleeve nominal length

Screwsleeve diling depth

Installation of FS screwsleve with internal threaded hole ffective thread length

Maximum screw in depth when FSscrew shankisnotremoved during installation

Actualefective length of the hole for S screw installation

Company Profile

Dongtai Jinzhize Metal Products Co., Ltd.

As DIN8140 Wire Thread Insert Manufacturer and Fine Pitch Wire Thread Insert Company, Dongtai Jinzhize Metal Products Co., Ltd. is a specialized manufacturing facility dedicated to threaded connection products for the automotive and aerospace sectors. We primarily produce Helical Wire Inserts, Self-Tapping Inserts, Key Locking Inserts, Threaded Adapters, Oil Plugs, as well as matching installation taps and tools. Established in 2015, the company operates from a 10,000-square-meter-owned manufacturing plant equipped with hundreds of machine tools and automated production systems. Through years of development, we have built an experienced team of design, development, and production specialists, complemented by a rigorous quality management system and comprehensive after-sales service mechanism. Our products are widely utilized in the automotive industry (including engines and transmissions for both passenger and commercial vehicles), the aerospace industry, and rail vehicle manufacturing. With an annual output value of 153 million RMB in 2024, we possess the capability for a large-scale, stable supply. We are committed to providing customers with highly consistent, traceable products and reliable service support.