Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Washers
Origin	-
Material Grade	Grade 12.9 High-Strength Steel
Standard	GB93 Spring Washer Standard
Finish	Black Oxide Coating
Included Sizes	M5, M6, M8, M10, M12
Hardness	HRC 39-44
Tensile Strength	Minimum 1220 MPa
Package Type	Compartmentalized Assortment Box
Application	Automotive, Machinery, and Structural Assembly
Corrosion Resistance	Moderate (Indoor/Protected Use)
Country of Origin	Manufactured to GB Standards

6 reviews

Anonymous

Mar 25, 2026

Rating: 5/5

Exactly what I needed for my engine build

High tensile strength is a must for my engine assembly. These GB93 washers fit perfectly and provide the necessary spring tension. Highly recommended for automotive work.

Anonymous

Mar 20, 2026

Rating: 4/5

Solid hardware

Very hard and resilient. I accidentally dropped a few on the concrete and they didn't chip or deform. Just make sure you have the right tools as they require significant torque.

Anonymous

Mar 15, 2026

Rating: 5/5

Professional grade quality

I run a small machine shop and we go through washers quickly. This assortment has been a staple in our inventory. The consistency in size and hardness is impressive.

Anonymous

Mar 11, 2026

Rating: 5/5

Perfect for heavy-duty projects

These washers are incredibly strong. I used the M10 and M12 sizes for a trailer hitch repair, and they held up perfectly under high torque. The black finish looks professional too.

Anonymous

Mar 06, 2026

Rating: 5/5

Good value for money

You get a lot of pieces for the price. Having all these sizes in one kit saves me trips to the hardware store. The black oxide coating seems durable so far.

Anonymous

Mar 01, 2026

Rating: 4/5

Great assortment, box could be better

The quality of the Grade 12.9 steel is excellent. My only complaint is that the plastic divider in the box was slightly cracked upon arrival, but the washers themselves were undamaged.

5 FAQ

Q: Can these be used outdoors?

A: While the black oxide finish offers some protection, these washers are primarily designed for indoor or protected applications. For prolonged outdoor exposure, we recommend applying an additional sealant or using stainless steel alternatives.

Q: Is the box resealable?

A: Yes, the assortment comes in a snap-lock plastic case that is designed to be resealable for easy storage and organization of leftover parts.

Q: Are these washers compatible with stainless steel bolts?

A: Yes, they can be used with stainless steel bolts, but please note that mixing metals may increase the risk of galvanic corrosion in wet environments. They are best suited for use with high-strength steel bolts.

Q: Do these meet DIN 127 standards as well?

A: These are manufactured specifically to the GB93 standard. While dimensions are very similar to DIN 127, we cannot guarantee full compliance with DIN specifications for critical engineering applications.

Q: What is the exact count of washers per size in the box?

A: The assortment typically contains approximately 20 pieces of M5, 20 of M6, 15 of M8, 10 of M10, and 8 of M12, though slight variations may occur based on production batches.

Explore your interests

Honeywell Fresh Air Filter - ERF150/ERF250/ERF350C0N/ERF150D/250D/350D Replacement Filters

$54.00

Chint Claw Hammer, One-Piece Formed Iron Hammer, Tool Nail Hammer, Mini Household Small Hammer Specialized for Woodworking

$5.00

Aluminum Alloy Diaphragm Coupling High Rigidity High Torque SCPS DBJ SCPW Servo Screw Motor Coupling

$28.80

Mold Support Pins SKD61; Three-stage Support Rods; Two-stage Mold Ejector Pins; Heat-resistant Stepped Push Rods with Head; Secondary Support Pins

$5.80

Iron Galvanized Spring Washer Split Spring Washer Metal Elastic Shim M3 M4 M5 M6 M8 M10 M12 M14 M16 M20

$3.60

Bronze Rings Bronze Bushings Bronze Washers and Gaskets Bronze Sleeves Lathe Machined 2.5/3/4/5/6/8/10/12 Customizable

$1.50

Beech Wood Two-Piece Cleaver Handle Accessories, Household Fixed Guard, Handmade Knife Rivet Handle Replacement, Solid Wood Handle

$3.51

Xingchen Oil-Water Separator Filter AC2010-02D, Automatic Drain Two-Component Unit AC3010-03/AC4010

$8.00

Universal Joint Cross Bearing - Sizes 20x45, 22x55, 20x55

$19.00

Figure-8 Coupling GB Encoder Shaft Connector Polyurethane TPU Flexible Plastic Elastic Shaft Sleeve

$13.00

Heavy-Duty Double Steel Wire Tiger Clamp Galvanized Strong Hose Clamp for Pipes Hoses Water Oil Tubes Stainless Steel Band Clamp

$2.60

European Standard Aluminum Profile T-Slot Nuts, Carbon Steel Square Nuts for Types 20, 30, 40, 45 (M3/M4/M5)

$0.55

Custom Non-standard Parts

$650.00

GA/GB Precision Guide Bushing Inner Small Guide Post Stamping Hardware Mold Wear-Resistant 8 10 12 14 16 18 20 25

$3.20

Aotian Extreme 24-25 BURTON STEP ON GENESIS Men's Dual Highback Step-On Snowboard Bindings

$2,288.50

Cungang Micro Ball Guide Pillar and Sleeve, Precision Micro Ball Bushing Guide Assembly, Bronze Bushing, FA Automation Bearing

$60.00

Jinchao Grade 12.9 Socket Set Screws Pointed Machine Screws Headless Grub Screws M3 M4 M5 M6-M16

$0.92

CNC Lathe 0640 Chuck Saw 4-Cut Non-Quenched Round Through Hole 3-46 Internal Thread M48x1.5 Spindle

$20.00

304 Stainless Steel Extension Spring with S-Hook, Strong Curved Hook, Various Sizes and Lengths, Customizable for Oven Door Pull Springs

$1.00

Micro HK Needle Roller Bearing Assortment, Inner Diameters 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 17-40mm

$0.58

In Stock Kaisite Solenoid Valve DG4V-5-2C-FW-H-60H 0C 6C 33C 8C 7C

$820.00

Sliding Bar Socket Extension Bar Power Bar Sliding Bar Large 1/2 Medium 3/8 Small 1/4 Fly Rail Tube Wrench Extension Bar Sliding Rod Tool

$3.25

Rotary Worktable Vertical and Horizontal Dual-Use Indexing Plate High-Precision CNC Milling Machine Rotary Table Indexing Head TS TSL

$2,155.00

Flat Pressure Thrust Ball Bearings 51200 51201 51202 51203 51204 51205 51206

$4.60

M20 National Standard Turnbuckle, Malleable Iron Screw Rigging, Spiral Buckle, Galvanized Flower Lantern Bolt, Utility Pole Wire Rope Tensioner

$10.80

M6 M8 M10 M12 M14 M16 Stainless Steel 304 Round Head Rivets GB867 Knock-in Mushroom Head Solid Sign Rivets

$2.43

Hammer Drill Adapter Chuck: Universal Connector for Rotary Hammers and Hand Drills, Compatible with Round Shank (Two Grooves) and Square Shank (Four Grooves)

$5.04

Precision Ball Guide Pillar and Bushing, Rolling Types 20 22 25 28 32 38 SRP TRP SGP Mold Accessories

$28.00

Wear-Resistant Double-Sided Dustproof Wire Grommet Round Cable Bushing Ring for Chassis Rubber Seal

$20.80

400kg 600kg 800kg High-Power Electric Vacuum Suction Cup, Construction Site Building Glass Handling Vacuum Lifting Machine

$5,664.00

TWSNS Taizhuan Shannais Oil-Water Separator Filter Self-Adjusting Pressure Valve Air Source Treatment Two-Piece Unit Pressure Reducing Valve

$11.00

Heavy-Duty Universal Caster Wheels, Silent Load-Bearing Rollers with Brakes, Directional Swivel Wheels for Trolleys, Furniture Moving Base

$2.13

Heavy-Duty Swivel Caster Polyurethane 4568 Inch Push Cart Plate Cart Cargo Wheel Wear-Resistant Steering Wheel Brake Wheel

$4.27

Galvanized Iron Thickened Split Lock Washer with Wide Flat Washer, Elastic Metal Shim M5 M6 M8 M10 M20

$1.47

Sliding Bar 1 Inch Heavy Duty 1/2 Sliding Bar Socket Extension Bar 1/4 3/8 4 Extended Bar Long Adapter Connector

$9.95

Air Source Processor Two-Piece Unit (BFR2000, BFC2000/3000/4000), Pressure Regulating Oil-Water Separator

$45.00

304 Stainless Steel Cross Countersunk Head Screws, Flat Head Machine Bolts, Assorted Electronic Small Screws M2/M3/M4/M5/M6

$1.10

Composite Washer External Hex Drill Tail Self-Tapping Screws for Color Steel Roofing Tiles, National Standard with Washer

$24.00

Custom Helical Gears for Reducers - Non-Standard Cylindrical Spiral Gears with Left/Right Hand Rotation, Module 1-20, 45-Degree Helix Angle

$10.00

Hammer Nut Hammer Head Cap Furniture Two-in-One Connector Cylinder Hammer Embedded Hex Socket Screw Cap M6 M8

$3.00