---
title: "All-Metal Hex Flange Lock Nuts"
description: "All-Metal Hex Flange Lock Nuts to GB/T 6187 / DIN 6927 / ASME B18.2.2: full dimensional table. 3 catalogued sizes with materials and finishes."
url: https://engineeringhardware.com/fastener/all-metal-hex-flange-lock-nuts/
source: Engineering Hardware & Fasteners
---

# All-Metal Hex Flange Lock Nuts

Nuts · Flange Lock Nuts (Nylon & All-Metal)

3 catalogued sizes, dimensioned to GB/T 6187 / DIN 6927 / ASME B18.2.2. Pick any row and the technical drawing redraws to it.

All-Metal Hex Flange Lock Nuts to GB/T 6187 / DIN 6927 / ASME B18.2.2: the full dimensional table is reproduced below. 3 sizes are held in the table below, and the technical drawing redraws to whichever row you select.

- **Standard:** GB/T 6187 / DIN 6927 / ASME B18.2.2
- **Catalogued sizes:** 3

Dimensions are nominal values from the governing standard. Confirm the tolerance class for your application before ordering.

![All-Metal Hex Flange Lock Nuts technical product image](https://engineeringhardware.com/wp-content/uploads/2026/09/All-Metal-Hex-Flange-Lock-Nuts.webp)

Product catalog

## Related Flange Lock Nuts (Nylon & All-Metal) products

[![Hex Nylon Lock Nut for Secure Fastening Solutions](https://img.engineeringhardware.com/Hex-Nylon-Lock-Nut-for-Secure-Fastening-Solutions.webp)](https://engineeringhardware.com/product/hex-nylon-lock-nut-for-secure-fastening-solutions/)

Nylon-Insert & All-Metal Lock Nuts

### [Hex Nylon Lock Nut for Secure Fastening Solutions](https://engineeringhardware.com/product/hex-nylon-lock-nut-for-secure-fastening-solutions/)

Hexagon Head · DIN

**US$0.33**MOQ 1,000 pieces

[![Factory DIN982 985 Carbon Steel Zinc Galvanized Nylon Lock Nut](https://img.engineeringhardware.com/Factory-DIN982-985-Carbon-Steel-Zinc-Galvanized-Nylon-Lock-Nut.webp)](https://engineeringhardware.com/product/factory-din982-985-carbon-steel-zinc-galvanized-nylon-lock-nut/)

Nylon-Insert & All-Metal Lock Nuts

### [Factory DIN982 985 Carbon Steel Zinc Galvanized Nylon Lock Nut](https://engineeringhardware.com/product/factory-din982-985-carbon-steel-zinc-galvanized-nylon-lock-nut/)

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

**US$0.012 – 0.024**MOQ 5,000 pieces

[![Durable Lock Nut for Machinery Fastening with Plain Surface Treatment](https://img.engineeringhardware.com/Durable-Lock-Nut-for-Machinery-Fastening-with-Plain-Surface-Treatment.webp)](https://engineeringhardware.com/product/durable-lock-nut-for-machinery-fastening-with-plain-surface-treatment/)

Nylon-Insert & All-Metal Lock Nuts

### [Durable Lock Nut for Machinery Fastening with Plain Surface Treatment](https://engineeringhardware.com/product/durable-lock-nut-for-machinery-fastening-with-plain-surface-treatment/)

Hexagon Head · DIN, ANSI, GB, JIS

**US$0.012**MOQ 1 piece

[![Aluminum Nylon Lock Nuts Colorful Self-Locking Anti-Loose Nuts M2-M8](https://img.engineeringhardware.com/Aluminum-Nylon-Lock-Nuts-Colorful-Self-Locking-Anti-Loose-Nuts-M2-M8.webp)](https://engineeringhardware.com/product/aluminum-nylon-lock-nuts-colorful-self-locking-anti-loose-nuts-m2-m8/)

Nylon-Insert & All-Metal Lock Nuts

### [Aluminum Nylon Lock Nuts Colorful Self-Locking Anti-Loose Nuts M2-M8](https://engineeringhardware.com/product/aluminum-nylon-lock-nuts-colorful-self-locking-anti-loose-nuts-m2-m8/)

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

**US$0.0012 – 0.012**MOQ 5,000 pieces

[![DIN985 Hex Nylon Lock Nut with Zinc Plated Carbon Steel or Stainless Steel M33m36m39](https://img.engineeringhardware.com/DIN985-Hex-Nylon-Lock-Nut-with-Zinc-Plated-Carbon-Steel-or-Stainless-Steel-M33m36m39.webp)](https://engineeringhardware.com/product/din985-hex-nylon-lock-nut-with-zinc-plated-carbon-steel-or-stainless-steel-m33m36m39/)

Nylon-Insert & All-Metal Lock Nuts

### [DIN985 Hex Nylon Lock Nut with Zinc Plated Carbon Steel or Stainless Steel M33m36m39](https://engineeringhardware.com/product/din985-hex-nylon-lock-nut-with-zinc-plated-carbon-steel-or-stainless-steel-m33m36m39/)

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

**US$0.12**MOQ 1,000 pieces

[![Carbon Steel Stainless Steel Black Oxide Nylon Hex Lock Nut](https://img.engineeringhardware.com/Carbon-Steel-Stainless-Steel-Black-Oxide-Nylon-Hex-Lock-Nut.webp)](https://engineeringhardware.com/product/carbon-steel-stainless-steel-black-oxide-nylon-hex-lock-nut/)

Nylon-Insert & All-Metal Lock Nuts

### [Carbon Steel Stainless Steel Black Oxide Nylon Hex Lock Nut](https://engineeringhardware.com/product/carbon-steel-stainless-steel-black-oxide-nylon-hex-lock-nut/)

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

**US$816.00 – 1,440**MOQ 1 piece

[View all Nylon-Insert & All-Metal Lock Nuts →](https://engineeringhardware.com/fastener-products/nuts/nylon-insert-all-metal-lock-nuts/) [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

The sectors that buy All-Metal Hex Flange Lock Nuts to GB/T 6187 / DIN 6927 / ASME B18.2.2, and the duty each one buys them for. Stocked from 8 to 12 (nominal diameter).

### Industries that specify All-Metal Hex Flange Lock Nuts

- **Vehicle chassis:** Prevailing torque plus a flange bearing face in one part.
- **Rotating machinery:** Vibration resistance without a separate lock washer.
- **Heavy equipment:** Class 10 and 12 for higher preload joints.
- **Exhaust and hot assemblies:** All-metal locking survives temperatures that destroy a nylon insert.
- **Machine building & OEM:** The clamping counter-face on studs and bolts throughout an assembly.
- **Steel fabrication:** Bolted structural and frame connections.

### Typical applications

- selecting class 8, 10 or 12 against the bolt grade
- using it where service temperature rules out nylon
- checking the flange seats fully on the joint face
- replacing a nut plus lock washer with one flanged part
- completing a bolted joint on a stud, rod or bolt
- locking an adjustment so it cannot drift

### 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.
- **High load:** Supplied in ISO 898-1 property classes, so the joint can be designed to a stated proof load and tightened to a calculated torque rather than by feel.
- **Vibration:** Specified where cyclic load would loosen a plain nut or screw — rotating plant, rail, mobile equipment and anything that is not re-torqued in service.
- **Match the class:** A nut below the bolt property class strips before the bolt reaches its own limit — pair class 8 nuts with 8.8 bolts, class 10 with 10.9.

### Where to use something else

- Do not re-use an all-metal lock nut indefinitely; the deformed thread loses prevailing torque each time it is run on.

[Full application guide: where All-Metal Hex Flange Lock Nuts are used, how to specify them, and the cases they are wrong for](https://engineeringhardware.com/applications/all-metal-hex-flange-lock-nuts/)

## Technical Drawing

Dimensioned line drawing of 8 All-Metal Hex Flange Lock Nuts to GB/T 6187 / DIN 6927 / ASME B18.2.2. Side view and top view, drawn to the dimensions in the table below and redrawn for any size selected.

- **Material:** carbon steel
- **Locking method:** deformed all-metal thread
- **Finish options:** black oxide or zinc
- **Service:** general vibration-exposed joints

## Dimensions & Specifications (GB/T 6187 / DIN 6927 / ASME B18.2.2)

Every row below is a starting point for the customizer above — pick any size and the drawing will redraw to that row.

| Strength class | Material | Locking method | Finish options | Service |
| --- | --- | --- | --- | --- |
| 8 | carbon steel | deformed all-metal thread | black oxide or zinc | general vibration-exposed joints |
| 10 | carbon steel or alloy steel | deformed all-metal thread | black oxide or zinc | higher-preload vibration service |
| 12 | alloy steel | deformed all-metal thread | black oxide or zinc | high-temperature and high-preload service |

All-Metal Hex Flange Lock Nuts (GB/T 6187 / DIN 6927 / ASME B18.2.2) are a type of nuts used across industrial assembly. Below is the complete size table together with material, standard and application guidance.

## What Are All-Metal Hex Flange Lock Nuts?

All-Metal Hex Flange Lock Nuts are nuts defined by GB/T 6187 / DIN 6927 / ASME B18.2.2. They are selected by nominal diameter and the dimensional characteristics shown below, and are available in a range of materials and finishes to suit the application and environment.

## Materials & Finishes

Common materials include carbon steel (typically zinc plated or hot-dip galvanized), alloy steel in property classes 8.8, 10.9 and 12.9, and stainless steel A2 (304) or A4 (316) for corrosion resistance. Specify the material, property class and surface finish appropriate to your load and environment.

## Specification Guides

Each size, material and standard of All-Metal Hex Flange Lock Nuts has its own reference page with the figures for that one configuration.

## Goes With

Hardware commonly specified alongside All-Metal Hex Flange Lock Nuts.

## Pricing

All-Metal Hex Flange Lock Nuts are supplied to order. Pricing starts from approximately US$0.080 per piece for standard sizes in carbon steel; final pricing depends on size, material, finish and order quantity (MOQ applies). Submit your exact configuration with the quote form above.

Custom manufacturing · Made to drawing

## Need a all-metal hex flange lock nuts outside the standard range?

Thread size is the obvious variable and rarely the interesting one — height for clearance, across-flats for the tool already in the cell, and the locking feature for the vibration actually present. Made by cold heading or tapping.

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

[Custom nut manufacturing](https://engineeringhardware.com/custom/nuts/)[Send a drawing](https://engineeringhardware.com/custom/nuts/#rfq)

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

### Which standard governs All-Metal Hex Flange Lock Nuts?

All-Metal Hex Flange Lock Nuts are manufactured to GB/T 6187 / DIN 6927 / ASME B18.2.2. The dimensional values on this page follow that standard.

### Which sizes of All-Metal Hex Flange Lock Nuts does Engineering Hardware supply?

The table on this page lists 3 sizes for All-Metal Hex Flange Lock Nuts, ranging from 8 to 12. Sizes outside the table can be quoted on request.

### In which materials are All-Metal Hex Flange Lock Nuts supplied?

All-Metal Hex Flange Lock Nuts are supplied in matching property-class steel and stainless A2 / A4, with finishes including zinc plating, hot-dip galvanizing and black oxide. Choose material and finish to suit the load and the service environment for All-Metal Hex Flange Lock Nuts.

### How do I request a quotation?

Use the parametric drawing on this page to set the exact configuration (size, material, finish) and click "Request this configuration" — a specialist from Engineering Hardware will respond within one business day.