---
title: "A4 (316) Stainless Steel Self-Tapping Threaded Inserts"
description: "A4 (316) Stainless Steel Self-Tapping Threaded Inserts (ISO 3506 group A4 (316 / 1.4401), commonly supplied A4-80): superior, including marine and chloride"
url: https://engineeringhardware.com/guide/material/a4-stainless-steel-self-tapping-threaded-inserts/
source: Engineering Hardware & Fasteners
---

# A4 (316) Stainless Steel Self-Tapping Threaded Inserts

Threaded Inserts · Trade series (self-tapping insert)

Mechanical properties, corrosion behaviour and the full dimensional range for this grade.

A4 Stainless Steel Self-Tapping Threaded Inserts are supplied to ISO 3506 group A4 (316 / 1.4401), commonly supplied A4-80. Corrosion behaviour is superior, including marine and chloride environments, the material is largely non-magnetic, and the usable service range is approx. -200 °C to +400 °C, subject to the property class and the joint. In practice this grade is specified for marine, coastal and chemical applications.

- **Grade:** ISO 3506 group A4 (316 / 1.4401), commonly supplied A4-80
- **Corrosion resistance:** Superior, including marine and chloride environments
- **Magnetic response:** Largely non-magnetic
- **Service temperature:** approx. -200 °C to +400 °C, subject to the property class and the joint

Property values are typical for the grade. Certified mechanical test data is available on request for production orders.

![A4 (316) Stainless Steel Self-Tapping Threaded Inserts reference image](https://engineeringhardware.com/wp-content/uploads/2026/09/Self-Tapping-Inserts.webp)

Material page for self-tapping threaded inserts in A4 Stainless Steel (ISO 3506 group A4 (316 / 1.4401), commonly supplied A4-80). The sizes below are the ones we supply; there is no published dimensional standard for this article, so the table rather than a standard number is what to quote. Corrosion behaviour is superior, including marine and chloride environments and the service range is approx. -200 °C to +400 °C, subject to the property class and the joint.

## Why Choose A4 Stainless Steel for Self-Tapping Threaded Inserts

Specified for marine, coastal and chemical applications. For self-tapping threaded inserts, this matters when superior, including marine and chloride environments is the primary requirement.

## Mechanical & Physical Properties

| Grade designation | ISO 3506 group A4 (316 / 1.4401), commonly supplied A4-80 |
| --- | --- |
| Magnetic response | Largely non-magnetic |
| Service temperature | approx. -200 °C to +400 °C, subject to the property class and the joint |
| Corrosion characteristic | Superior, including marine and chloride environments |

## Corrosion Behavior in Service

A4 (316) adds 2–3% molybdenum to the A2 (304) composition, which dramatically improves resistance to chloride-pitting corrosion. For Self-Tapping Threaded Inserts in marine, coastal, swimming-pool or food-processing environments, A4 is the default selection.

## Comparable Grades

For Self-Tapping Threaded Inserts, the alternative stainless grade is A2 (304). A2 (304) covers general indoor and outdoor service. A4 (316) adds molybdenum, which is what buys the chloride resistance for marine and de-icing-salt exposure. Where strength matters more than corrosion, plated alloy steel in class 8.8 or 10.9 is the swap to make.

## Using Stainless Fasteners in Aluminum

The galvanic couple here runs the wrong way: aluminum is the less noble metal, so it corrodes and the fastener does not. What governs the rate is the ratio of areas — a large anode and a small cathode is a tolerable combination, the reverse concentrates the attack into thin material around the hole. An isolating washer plus sealant breaks the circuit; where that is impractical, match the fastener to the substrate.

## Sizes of Self-Tapping Threaded Inserts Available in A4 Stainless Steel

| Internal thread | Outer diameter (mm) | Length L (mm) | Hole in parent (mm) | Head form | Material | Installation |
| --- | --- | --- | --- | --- | --- | --- |
| M3 | 6.0 | 6.0 | 6.0 | Flush | Case-hardened steel | Mandrel or driver |
| M4 | 8.0 | 8.0 | 8.0 | Flush | Case-hardened steel | Mandrel or driver |
| M5 | 9.0 | 10.0 | 9.0 | Flush | Case-hardened steel | Mandrel or driver |
| M6 | 11.0 | 12.0 | 11.0 | Flush | Case-hardened steel | Mandrel or driver |
| M8 | 14.0 | 14.0 | 14.0 | Flush | Case-hardened steel | Mandrel or driver |
| M10 | 16.0 | 18.0 | 16.0 | Flush | Case-hardened steel | Mandrel or driver |

Dimensions are independent of the material: the table above lists the sizes supplied, and on this page every one of them is quoted in A4 Stainless Steel. The catalogue's default material column has been omitted here so it cannot be read as contradicting that.

Custom manufacturing · Made to drawing

## Need this threaded insert in a grade that is not listed?

A4 Stainless Steel is one of the grades the catalog describes. Thread size, body length, knurl or key form and installation method are all variable against the parent material. Made by tapping or knurling.

Minimum order from 2,000 pieces; samples within 7 days of drawing approval.

[Custom threaded insert manufacturing](https://engineeringhardware.com/custom/inserts/)[Send a drawing](https://engineeringhardware.com/custom/inserts/#rfq)

## Technical Drawing

Dimensioned line drawing of M3 Self-Tapping Threaded Inserts to Trade series (self-tapping insert). Side view and top view, drawn to the dimensions in the table below and redrawn for any size selected.

- **Outer diameter (mm):** 6.0
- **Length L (mm):** 6.0
- **Hole in parent (mm):** 6.0
- **Suitable parent material:** Alloy, cast iron, plastic
- **Head form:** Flush
- **Material:** Case-hardened steel
- **Installation:** Mandrel or driver

## Dimensions & Specifications (Trade series (self-tapping insert))

| Internal thread | Outer diameter (mm) | Length L (mm) | Hole in parent (mm) | Suitable parent material | Head form | Material | Installation |
| --- | --- | --- | --- | --- | --- | --- | --- |
| M3 | 6.0 | 6.0 | 6.0 | Alloy, cast iron, plastic | Flush | Case-hardened steel | Mandrel or driver |
| M4 | 8.0 | 8.0 | 8.0 | Alloy, cast iron, plastic | Flush | Case-hardened steel | Mandrel or driver |
| M5 | 9.0 | 10.0 | 9.0 | Alloy, cast iron, plastic | Flush | Case-hardened steel | Mandrel or driver |
| M6 | 11.0 | 12.0 | 11.0 | Alloy, cast iron, plastic | Flush | Case-hardened steel | Mandrel or driver |
| M8 | 14.0 | 14.0 | 14.0 | Alloy, cast iron, timber | Flush | Case-hardened steel | Mandrel or driver |
| M10 | 16.0 | 18.0 | 16.0 | Alloy, cast iron, timber | Flush | Case-hardened steel | Mandrel or driver |

Product catalog

## Related Self-Tapping Inserts products

[![Compression Resistance Pan Head Cross Recessed Self-Tapping Screw for Auto Repair](https://img.engineeringhardware.com/Compression-Resistance-Pan-Head-Cross-Recessed-Self-Tapping-Screw-for-Auto-Repair.webp)](https://engineeringhardware.com/product/compression-resistance-pan-head-cross-recessed-self-tapping-screw-for-auto-repair/)

Self-Tapping & Thread-Forming Screws

### [Compression Resistance Pan Head Cross Recessed Self-Tapping Screw for Auto Repair](https://engineeringhardware.com/product/compression-resistance-pan-head-cross-recessed-self-tapping-screw-for-auto-repair/)

GB / DIN / ISO · Carbon Steel, Stainless Steel

**US$0.012 – 0.06**MOQ 1,000 pieces

[![Anti-Loosening Design Customizable GB846 Cross Countersunk Head Tapping Screws](https://img.engineeringhardware.com/Anti-Loosening-Design-Customizable-GB846-Cross-Countersunk-Head-Tapping-Screws.webp)](https://engineeringhardware.com/product/anti-loosening-design-customizable-gb846-cross-countersunk-head-tapping-screws/)

Self-Tapping & Thread-Forming Screws

### [Anti-Loosening Design Customizable GB846 Cross Countersunk Head Tapping Screws](https://engineeringhardware.com/product/anti-loosening-design-customizable-gb846-cross-countersunk-head-tapping-screws/)

Round Head · DIN, GB, ANSI, BSW, JIS, GOST

**US$0.12 – 2.40**MOQ 1,000 pieces

[![High Quality Hexagon Head Tapping Screw DIN7976](https://img.engineeringhardware.com/High-Quality-Hexagon-Head-Tapping-Screw-DIN7976.webp)](https://engineeringhardware.com/product/high-quality-hexagon-head-tapping-screw-din7976/)

Self-Tapping & Thread-Forming Screws

### [High Quality Hexagon Head Tapping Screw DIN7976](https://engineeringhardware.com/product/high-quality-hexagon-head-tapping-screw-din7976/)

Hexagon Head · DIN, GB, ANSI, BSW, JIS, GOST

**US$0.28**MOQ 1,000 pieces

[![Factory Wholesaler Intended Hex Washer Flange Hexgon Head Self Tapping Drilling Bi-Metal Roofing Wood Chipboard Decking Screws Made in China](https://img.engineeringhardware.com/Factory-Wholesaler-Intended-Hex-Washer-Flange-Hexgon-Head-Self-Tapping-Drilling-Bi-Metal-Roofing-Wood-Chipboard-Decking-Screws-Made-in-China.webp)](https://engineeringhardware.com/product/factory-wholesaler-intended-hex-washer-flange-hexgon-head-self-tapping-drilling-bi/)

Self-Tapping & Thread-Forming Screws

### [Factory Wholesaler Intended Hex Washer Flange Hexgon Head Self Tapping Drilling Bi-Metal Roofing Wood Chipboard Decking Screws Made in China](https://engineeringhardware.com/product/factory-wholesaler-intended-hex-washer-flange-hexgon-head-self-tapping-drilling-bi/)

6-100mm · Hex Head Self Drilling Screw

**US$0.006 – 0.012**MOQ 1 piece

[![304 Stainless Steel Flat-Head Self-Tapping Screws with Cross Slots, M2.9, M3](https://img.engineeringhardware.com/304-Stainless-Steel-Flat-Head-Self-Tapping-Screws-with-Cross-Slots-M2-9-M3.webp)](https://engineeringhardware.com/product/304-stainless-steel-flat-head-self-tapping-screws-with-cross-slots-m2-9-m3/)

Self-Tapping & Thread-Forming Screws

### [304 Stainless Steel Flat-Head Self-Tapping Screws with Cross Slots, M2.9, M3](https://engineeringhardware.com/product/304-stainless-steel-flat-head-self-tapping-screws-with-cross-slots-m2-9-m3/)

DIN, ASTM, GOST, GB, JIS, ANSI, BS · Metal

**US$0.0092 – 0.0096**MOQ 50,000 pieces

[![M2– M8 Flat Head Carbon Steel Stainless Steel Cross Countersunk Self Tapping Screw](https://img.engineeringhardware.com/M2-M8-Flat-Head-Carbon-Steel-Stainless-Steel-Cross-Countersunk-Self-Tapping-Screw.webp)](https://engineeringhardware.com/product/m2-m8-flat-head-carbon-steel-stainless-steel-cross-countersunk-self-tapping-screw/)

Self-Tapping & Thread-Forming Screws

### [M2– M8 Flat Head Carbon Steel Stainless Steel Cross Countersunk Self Tapping Screw](https://engineeringhardware.com/product/m2-m8-flat-head-carbon-steel-stainless-steel-cross-countersunk-self-tapping-screw/)

Hexagon Head · DIN, ANSI, GB, JIS, GOST, BSW

**US$0.012**MOQ 100,000 pieces

[View all Self-Tapping & Thread-Forming Screws →](https://engineeringhardware.com/fastener-products/screws/self-tapping-thread-forming-screws/) [Full product catalog](https://engineeringhardware.com/products/)

## Materials & Grades

Select a material class to see the grades we supply it in. Each designation is listed with its ISO/EN, AISI/SAE, JIS and GB equivalents.

Stainless Steel38 Carbon Steel66 Alloy Steel41 Bearing Steel5 Spring Steel25 Aluminum and Aluminum Alloys21 Brass17 Bronze11 Copper8 Titanium and Titanium Alloys18 Nickel and Nickel Alloys22 Iron-Nickel and High-Temperature Alloys10 Tool Steel and Specialty Hardened Steel9 Structural and Construction Steel9

### Stainless Steel

#### Austenitic Stainless Steel

- A1 AISI 303 · SAE 303 · SUS303 · EN 1.4305 · X8CrNiS18-9
- A2 AISI 304 · SAE 304 · SUS304 · EN 1.4301 · X5CrNi18-10 · 06Cr19Ni10
- 304L AISI 304L · SUS304L · EN 1.4307 · X2CrNi18-9 · 022Cr19Ni10
- 302 AISI 302 · SUS302 · EN 1.4310
- 305 AISI 305 · SUS305 · EN 1.4303
- A4 AISI 316 · SAE 316 · SUS316 · EN 1.4401 · X5CrNiMo17-12-2 · 06Cr17Ni12Mo2
- 316L AISI 316L · SUS316L · EN 1.4404 · X2CrNiMo17-12-2 · 022Cr17Ni12Mo2
- 321 AISI 321 · SUS321 · EN 1.4541 · X6CrNiTi18-10
- 310 / 310S AISI 310 · AISI 310S · SUS310S · EN 1.4845
- 302HQ AISI 302HQ
- A3
- A5
- 347 AISI 347 · SUS347 · EN 1.4550 · X6CrNiNb18-10
- 309 / 309S AISI 309 · AISI 309S · SUS309S

#### Martensitic Stainless Steel

- AISI 410 SUS410 · EN 1.4006 · X12Cr13 · 12Cr13
- AISI 420 SUS420J1 · SUS420J2 · EN 1.4021 · EN 1.4028 · 20Cr13 · 30Cr13
- AISI 431 SUS431 · EN 1.4057 · X17CrNi16-2
- C1
- C3
- C4
- AISI 440A
- AISI 440B
- AISI 440C SUS440C · EN 1.4125

#### Ferritic Stainless Steel

- AISI 430 SUS430 · EN 1.4016 · X6Cr17 · 10Cr17
- F1
- AISI 434
- AISI 444

#### Precipitation-Hardening Stainless Steel

- 17-4 PH AISI 630 · UNS S17400 · SUS630 · EN 1.4542 · X5CrNiCuNb16-4
- 15-5 PH UNS S15500
- 17-7 PH UNS S17700

#### Duplex and Super Duplex Stainless Steel

- Duplex 2205 UNS S31803 · UNS S32205 · EN 1.4462
- Super Duplex 2507 UNS S32750 · EN 1.4410
- D2
- D4
- D6
- D8
- Lean Duplex 2101 UNS S32101
- Super Duplex S32760 UNS S32760 · EN 1.4501

### Carbon Steel

#### Low-Carbon Steel

- SAE 1006
- SAE 1008
- SAE 1010
- SAE 1018
- SAE 1020
- Q195
- Q235
- SAE 1012
- SAE 1015
- Q215
- ML08
- ML08Al
- ML10
- ML15
- ML20
- SWRCH6A
- SWRCH8A
- SWRCH10A
- SWRCH12A
- SWRCH15A
- SWRCH18A

#### Medium-Carbon Steel

- SAE 1035
- SAE 1045
- S45C
- C45
- SAE 1030
- SAE 1040
- SAE 1050
- 30
- 35
- 40
- 45
- 50
- S35C
- S40C
- S50C
- C35
- C40

#### High-Carbon Steel

- SAE 1060
- SAE 1070
- 65Mn
- SAE 1065
- SAE 1075
- SAE 1080
- SAE 1085
- SAE 1090
- SAE 1095
- 60
- 65
- 70
- 75
- 80
- 85

#### Cold-Heading Steel

- SWRCH22A
- 10B21
- SWRCH22K
- SWRCH25K
- SWRCH30K
- SWRCH35K
- SWRCH40K
- ML20Mn
- ML25
- ML30
- ML35
- ML40
- 15B25

### Alloy Steel

#### Chromium Steel

- 40Cr
- 45Cr
- AISI 5140
- SAE 5140
- AISI 5120
- SAE 5120
- SCr420
- SCr440

#### Chromium-Molybdenum Steel

- 35CrMo
- 42CrMo
- AISI 4140
- SCM435
- SCM440
- 42CrMo4
- 30CrMo
- AISI 4130
- SAE 4130
- SAE 4140
- AISI 4142
- AISI 4145
- SCM415
- SCM420
- SCM445
- EN 1.7220
- EN 1.7225
- 25CrMo4
- 34CrMo4

#### Nickel-Chromium-Molybdenum Steel

- AISI 4340
- SAE 4340
- 40CrNiMo
- SNCM439
- EN 1.6511
- 36CrNiMo4

#### Boron Alloy Steel

- 10B22
- 10B21
- 15B21
- 15B25
- 20MnTiB
- 20Mn2B
- 35VB
- 40MnB

### Bearing Steel

#### Bearing Steel

- GCr15
- AISI 52100 SAE 52100 · UNS G52986
- SUJ2
- 100Cr6 EN 1.3505
- GCr15SiMn

### Spring Steel

#### Carbon Spring Steel

- SAE 1065
- SAE 1070
- SAE 1075
- SAE 1080
- SAE 1095
- 65
- 70
- 75
- 80
- 65Mn

#### Silicon-Manganese Spring Steel

- 60Si2Mn
- 60Si2MnA
- SUP6
- SUP7

#### Chromium-Vanadium Spring Steel

- 50CrVA
- SAE 6150
- AISI 6150
- SUP10

#### Stainless Spring Steel

- AISI 301
- SUS301
- EN 1.4310
- AISI 302
- AISI 304
- AISI 316
- 17-7 PH

### Aluminum and Aluminum Alloys

#### Commercially Pure Aluminum

- 1050
- 1060
- 1070
- 1100

#### 2xxx Series Aluminum

- 2024
- 2011
- 2014
- 2017

#### 5xxx Series Aluminum

- 5052
- 5083
- 5754

#### 6xxx Series Aluminum

- 6061
- 6061-T6
- 6063
- 6082
- 6082-T6

#### 7xxx Series Aluminum

- 7075
- 7075-T6
- 7005
- 7050
- 7075-T73

### Brass

#### Free-Cutting Brass

- C36000
- H62
- HPb59-1
- C3601
- C3602
- C3604
- CuZn36Pb3
- CuZn39Pb3
- EN CW614N
- EN CW617N
- H65

#### Lead-Free Brass

- C69300
- C27450
- CW510L
- CW511L

#### Naval Brass

- C46400
- CuZn39Sn1

### Bronze

#### Silicon Bronze

- C65500
- C65100
- C65600

#### Phosphor Bronze

- C51000
- C52100
- CuSn6
- CuSn8

#### Aluminum Bronze

- C95400
- C95500
- C63000
- CuAl10Ni5Fe4

### Copper

#### Copper

- C11000
- T2
- C10100
- C10200
- C12200
- T1
- TU1
- TU2

### Titanium and Titanium Alloys

#### Commercially Pure Titanium

- Grade 2
- Grade 1
- Grade 3
- Grade 4
- TA1
- TA2
- TA3

#### Alpha-Beta Titanium Alloys

- Grade 5
- Ti-6Al-4V
- TC4
- UNS R56400

#### Low-Interstitial Grade

- Grade 23
- Ti-6Al-4V ELI
- UNS R56407

#### Other Titanium Fastener Alloys

- Ti-6Al-6V-2Sn
- Ti-6Al-2Sn-4Zr-2Mo
- Beta-C titanium
- Ti-10V-2Fe-3Al

### Nickel and Nickel Alloys

#### Commercially Pure Nickel

- Nickel 200
- UNS N02200
- Nickel 201
- UNS N02201

#### Inconel Alloys

- Inconel 625 UNS N06625
- Inconel 718 UNS N07718
- Inconel 600 UNS N06600
- Inconel 601 UNS N06601
- Inconel 686 UNS N06686
- Inconel X-750 UNS N07750

#### Monel Alloys

- Monel 400 UNS N04400
- Monel K-500 UNS N05500

#### Hastelloy Alloys

- Hastelloy C-276 UNS N10276
- Hastelloy C-22 UNS N06022
- Hastelloy B-2 UNS N10665
- Hastelloy B-3 UNS N10675
- Hastelloy X UNS N06002

#### Other Nickel Alloys

- Alloy 20 UNS N08020
- Alloy 625
- Alloy 718
- Alloy 825 UNS N08825
- Alloy 925 UNS N09925

### Iron-Nickel and High-Temperature Alloys

#### A286

- A-286
- UNS S66286
- EN 1.4980

#### Invar

- Invar 36
- Alloy 36
- UNS K93600
- FeNi36

#### Alloy 42

- Alloy 42
- UNS K94100
- FeNi42

### Tool Steel and Specialty Hardened Steel

#### Tool Steel and Specialty Hardened Steel

- AISI D2
- AISI H13
- SKD11
- Cr12MoV
- AISI O1
- AISI A2
- AISI S7
- SKD61
- 9CrSi

### Structural and Construction Steel

#### Structural and Construction Steel

- ASTM A36
- Q235B
- Q355B
- S355JR
- Q235C
- Q355C
- S235JR
- S275JR
- S355J2

## Applications & Industries

Where Self-Tapping Threaded Inserts are used, and what decides the specification in each case. Stocked from M3 to M10.

### Industries that specify Self-Tapping Threaded Inserts

- **Aluminium & castings:** Strong threads in soft alloy without a tap.
- **Machine repair:** Restoring a stripped hole to its original size.
- **Timber & composites:** Threads in timber and board-type materials.
- **Aluminium & castings:** Reinforced threads in soft alloy, and repair of stripped holes.
- **Aerospace & motorsport:** Certified thread repair under vibration and inspection.
- **Additive manufacturing:** Threads in printed parts, where layer adhesion cannot carry a screw thread.

### Typical applications

- cutting its own thread into a drilled hole
- repairing a stripped thread in situ
- creating a reusable metal thread in a soft or thin parent
- repairing a stripped hole to its original size
- assemblies opened and closed many times over their life

### Service conditions to specify against

- **Marine and coastal:** Available in A4 (316) stainless for chloride exposure — coastal structures, pool halls, water treatment and deck hardware, where A2 will eventually pit.
- **Parent material first:** The insert type is chosen by what it goes into — moulded plastic, printed polymer, alloy casting or timber — not by the screw that goes into it.

[Full application guide: where Self-Tapping Threaded Inserts are used, how to specify them, and the cases they are wrong for](https://engineeringhardware.com/applications/self-tapping-threaded-inserts/)

Inside the plant

## Manufactured in our own plant

This part is cold-formed, threaded, heat-treated and finished in-house. The stages below are where its class and finish are actually decided.

1. ![Wire rod feeding into a cold heading machine](https://engineeringhardware.com/wp-content/uploads/2026/08/09-wire-rod-feed-cold-heading-machine.webp) 01 **Cold heading** Wire rod is drawn to size and cold-formed into blanks. Forming rather than cutting keeps the grain flow continuous around the head, which is where a bolt is most likely to fail. Head dimensions and under-head radius checked at set-up and per shift.
2. ![Thread rolling machine producing bolt threads](https://engineeringhardware.com/wp-content/uploads/2026/08/03-thread-rolling-machine-bolt-production.webp) 02 **Thread rolling** Threads are rolled between hardened dies rather than cut. Rolled threads are stronger in fatigue than cut threads and hold pitch and flank angle far more consistently across a batch. Go / no-go ring gauges to ISO 965 tolerance class 6g.
3. ![Baskets of bolts staged for heat treatment](https://engineeringhardware.com/wp-content/uploads/2026/08/05-heat-treatment-baskets-black-bolts.webp) 03 **Heat treatment** Quench-and-temper brings carbon and alloy steel to the property class ordered — 8.8, 10.9 or 12.9 — with the furnace charge tracked so a finished lot can be traced back to it. Core hardness and tensile tested per lot to ISO 898-1.
4. ![Zinc plated bolts in a treatment basket](https://engineeringhardware.com/wp-content/uploads/2026/08/23-zinc-plated-bolts-treatment-basket.webp) 04 **Surface treatment** Zinc, zinc-nickel, hot-dip galvanizing, black oxide, phosphate and Dacromet, selected against the service environment rather than against the price list. Coating thickness and neutral salt spray hours to ISO 9227.

## Frequently Asked Questions

### What's the service temperature limit for A4 Stainless Steel?

The practical service range is approx. -200 °C to +400 °C, subject to the property class and the joint.

### Can A4 Stainless Steel replace plated alloy steel structurally?

Only at the standard strength classes — A2-70 / A4-80 are roughly equivalent to class 7 steel; A4-100 reaches class 8.8. For class 10.9 or 12.9 strength, plated alloy steel is required.

### Are A4 Stainless Steel Self-Tapping Threaded Inserts magnetic?

A4 Stainless Steel Self-Tapping Threaded Inserts are largely non-magnetic.

### What corrosion resistance do A4 Stainless Steel Self-Tapping Threaded Inserts offer?

A4 Stainless Steel Self-Tapping Threaded Inserts provide superior, including marine and chloride environments with a service range of approx. -200 °C to +400 °C, subject to the property class and the joint.

### How do I request a quotation?

Use the technical drawing on this page to pick the exact configuration, then submit it with the quote form. We respond within one business day.

## Related Pages

[View the full Self-Tapping Threaded Inserts page](https://engineeringhardware.com/fastener/self-tapping-threaded-inserts/)

### More Self-Tapping Threaded Inserts Guides