Standard & made-to-drawing parts
Checked before shipping
Air, sea & express delivery

Threaded Inserts & Clinch Fasteners › Thread Repair & Solid Threaded Inserts

M14 M16 M18 High Quality Industry 302 Self Tapping Threaded Inserts for Thread Repair

Updated 2026-11-04 · Markdown version

Model no. EA-M14

US$0.024100–999 pieces

US$0.02281,000+ pieces

MOQ 100 pieces · Final price confirmed in your quote

Material: Stainless Steel
Surface Finishing: Zinc Plated
Customized: Customized
Surface Treatment: Zinc Plated
Thread Type: Unc/Unf

Get a quote WhatsApp

Specifications are as listed for this product. Engineering Hardware & Fasteners confirms ratings, mating parts, compatibility, packing and lead time with you before you order.

Specifications

Customization	Available
Material	Stainless Steel
Type	Common
Model NO.	EA-M14
Usage	Building, Machinery, Medical, Rocket, Shipping, Chemical, High Speed Rail
Rotation Direction	Right Rotation
Surface Finishing	Zinc Plated
Certification	ISO, RoHS, BV Report
Customized	Customized
Sample	Available
MOQ	10PCS
Other Product Name	Self Tapping Thread Inserts
Certificate	ISO9001:2015
Other Certificate	IATF16949:2016
Surface Treatment	Zinc Plated
Thread Type	Unc/Unf
Warranty	6 Months
Transport Package	Inner Plastic Bags+Outer Carton Case
Specification	From M2 to M30
Origin	China
HS Code	7318190090
Production Capacity	500000PCS/Week
Unit	mm
Package	Usually finished products will be put into plastic bags and outer with carton cases.
Delivery time	Stocked goods can be delivered out the same day we received the order.
https	//eliteaviation.en.made-in-china.com.
Category	Thread Repair & Solid Threaded Inserts

Technical parameters

302 Type Self Tapping Thread Insert(Specification Table 1) Unit:mm
Internal Thread	Length		Reference drilling diameter	Minimum drilling depth
Metric	UNC	UNF	External Thread	Plastic	Aluminum alloy	Cast iron
M2×0.4			6	M4.5×0.5	4.0~4.1	4.1~4.2	4.2~4.3	8
M2.5×0.45	2-56		6	M4.5×0.5	4.0~4.1	4.1~4.2	4.2~4.3	8
M3×0.5	4-40	4-48	6	M5×0.5	4.5~4.6	4.6~4.7	4.7~4.8	8
M3.5×0.6	6-32	6-40	8	M6×0.75	5.3~5.4	5.5~5.6	5.6~5.7	10
M4×0.7	8-32	8-36	8	M6.5×0.75	5.8~5.9	6.0~6.1	6.1~6.2	10
M5×0.8	10-24	10-32	10	M8×1.0	7.1~7.2	7.3~7.5	7.5~7.6	13
M6×1.0			12	M9×1.0	8.1~8.2	8.3~8.5	8.5~8.6	15
M6×1.0	1/4-20	37009	14	M10×1.5	9.0~9.2	9.2~9.3	9.3~94	17
M8×1.25	5/16-18	5/16-24	15	M12×1.5	10.8~11.0	11~11.2	11.2~11.4	18
M10×1.5	3/8-16	37857	18	M14×1.5	12.8~13.0	13.0~13.3	13.2~13.4	22
M12×1.75	7/16-14	7/16-20	22	M16×1.5	14.8~15.0	15.0~15.3	15.2~15.4	26
M14×2.0			24	M18×1.5	16.8~17.0	17.0~17.3	17.2~17.4	28
M14×2.0	1/2-13	1/2-20	22	M18×1.5	16.8~17.0	17.0~17.3	17.2~17.4	28
M16×2.0	5/8-11	5/8-18	22	M20×1.5	18.8~19.0	19.0~19.3	19.2~19.4	27
M18×2.5			24	M22×1.5	20.8~21.0	21.0~21.3	21.2~21.4	29
M20×2.5			27	M26×1.5	24.8~25.0	25.0~25.3	25.2~25.4	32
M22×2.5			30	M26×1.5	24.8~25.0	25.0~25.3	25.2~25.4	36
M24×3.0			30	M30×1.5	28.8~29.0	29.0~29.3	29.2~29.4	36
M27×3.0			30	M34×1.5	32.8~33.0	33.0~33.2	33.2~33.4	36
M30×3.5			40	M36×1.5	34.8~35.0	35.0~35.2	35.2~35.4	46

307/308Type Self Tapping Thread Insert(Specification Table 1) Unit:mm
Type	Internal Thread	Length	External Thread	Reference drilling diameter	Minimum drilling depth
Aluminum alloy	Cast iron
307	M3×0.5	4	M5×0.6	4.6~4.7	4.7~4.8	6
308	6	8
307	M3.5×0.6	5	M6×0.8	5.6~5.7	5.7~5.8	7
308	8	10
308
307	M4×0.7	6	M6.5×0.6	6.0~6.1	6.1~6.2	8
308	8	10
307	M5×0.8	7	M8×1	7.4~7.5	7.6~7.7	9
308	10	13
307	M6×1	8	M10×1.25	9.3~9.4	9.5~9.6	10
308	12	15
307	M8×1.25	9	M12×1.5	11.1~11.3	11.3~11 s	11
308	14	17
307	M10×1.5	10	M14×1.5	13.1~133	13.3~135	13
308	18	22
307	M12×1.75	12	M16×1.75	15.0~15.3	15.3~15.5	15
308	22	26
307	M14×2	14	M18×2	17.0~17.2	17.3~17.5	17
308	24	28
307	M16×2	14	M20×2	19.0~19	19.3~19.5	17
308	24	28

Description

M14 M16 M18 High Quality Industry 302 Self Tapping Threaded Inserts for Thread Repair is part of our thread repair & solid threaded inserts range (Threaded Inserts & Clinch Fasteners).

Key details

Type: Common
Material: Stainless Steel
Surface Treatment: Zinc Plated
Certification: ISO, RoHS, BV Report
Rotation Direction: Right Rotation
Surface Finishing: Zinc Plated
Other Product Name: Self Tapping Thread Inserts
Certificate: ISO9001:2015

Available configurations include material, surface finishing, customized, surface treatment and thread type. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request.

Ordering through Engineering Hardware & Fasteners

Minimum order is 100 pieces at US$0.0228 – 0.024 per piece. Send one inquiry with the part number, quantity and destination, and Engineering Hardware & Fasteners confirms size, thread, material, grade, finish, price, lead time and shipping, checks the goods before dispatch and ships them to you.

Frequently asked questions

What is the minimum order quantity (MOQ) for M14 M16 M18 High Quality Industry 302 Self Tapping Threaded Inserts for Thread Repair?

The listed minimum order is 100 pieces, at US$0.0228 – 0.024 per piece. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size.

How does the price change with quantity?

Volume pricing: US$0.024 for 100–999 pieces; US$0.0228 for 1,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote.

What are the main specifications of M14 M16 M18 High Quality Industry 302 Self Tapping Threaded Inserts for Thread Repair?

Type: Common; Material: Stainless Steel; Surface Treatment: Zinc Plated; Certification: ISO, RoHS, BV Report; Rotation Direction: Right Rotation; Surface Finishing: Zinc Plated. The full specification table and any technical parameter tables are listed on this page.

Can this product be customized (OEM)?

Listed configurations include material, surface finishing, customized, surface treatment and thread type. Size, thread, length, material and grade, surface finish, head marking, packaging and labels can be quoted to your specification or drawing.

What is the lead time and how is it shipped?

Lead time depends on quantity and customization and is confirmed in your quote. Engineering Hardware & Fasteners checks the goods before dispatch and ships by express, air or sea; mixed orders can be consolidated in one shipment.

Which other thread repair & solid threaded inserts are available?

The Thread Repair & Solid Threaded Inserts category lists 961 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/threaded-inserts-clinch-fasteners/thread-repair-solid-threaded-inserts/

How we work

Specified, checked and shipped by Engineering Hardware & Fasteners

Engineering Hardware & Fasteners supplies bolts, screws, nuts, washers, anchors, rivets and fastening hardware to equipment makers, contractors, distributors and maintenance teams. Orders go through one controlled process: size, thread, material, grade and finish confirmed, samples approved, dimensions, thread fit and plating checked before packing, then packed for export — standard or made to drawing.

DIN, ISO, ASTM, ANSI, JIS and GB standard parts
Non-standard parts made to your drawing
Dimensions, thread gauges and plating checked before packing
Export cartons and pallets, consolidated mixed orders
Samples available for approval before mass production

More about us → · Request a sample or custom quote →

Request a quote for this product

US$0.0228 – 0.024MOQ 100 piecesGet a quote WA