Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Washers
Origin	-
Material	304 Stainless Steel
Finish	Black Zinc Plated
Type	Split Lock Washer (Spring)
Standard	GB93 / DIN 127
Available Sizes	M2, M3, M4, M5, M6, M8, M10, M12, M16, M20
Hardness	HRC 43-50
Corrosion Resistance	High (Suitable for indoor and mild outdoor use)
Package Type	Wholesale Bulk Box
Thread Compatibility	Metric Coarse Thread
Application	Machinery, Automotive, Electronics, Construction

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Great for automotive repairs

Used the M10 and M12 sizes for suspending parts on my car. The lock feature works great to prevent loosening under vibration. Very happy with this purchase.

Anonymous

Mar 22, 2026

Rating: 4/5

Good quality, slight color variation

Overall very satisfied with the 304 stainless steel quality. There was a very slight variation in the black shade between batches, but it doesn't affect performance. Will buy again.

Anonymous

Mar 17, 2026

Rating: 5/5

Perfect for bulk industrial needs

Ordered the M8 size for our assembly line. The black finish is consistent, and the spring tension is exactly what we needed for vibration resistance. Great value for bulk purchasing.

Anonymous

Mar 16, 2026

Rating: 5/5

Fast shipping and well packed

Needed M4 washers urgently for an electronics project. They arrived quickly and were packed securely in a sturdy box. No bending or damage to the washers.

Anonymous

Mar 08, 2026

Rating: 5/5

Excellent corrosion resistance

Using these in a humid workshop environment. After three months, there is no sign of rust on the zinc plating or the steel. Highly recommend for DIY projects too.

Anonymous

Mar 02, 2026

Rating: 4/5

Solid standard washers

These meet the GB93 standard perfectly. Fit my metric bolts snugly. Took off one star only because the bulk box was a bit difficult to open without spilling.

5 FAQ

Q: What is the minimum order quantity for wholesale pricing?

A: Our wholesale bulk boxes start at 1000 pieces per size. Please check the specific size selector on the product page for exact counts and tiered pricing.

Q: Are these washers compatible with imperial bolts?

A: No, these washers are designed specifically for metric thread sizes (M2-M20) according to the GB93 standard. They are not suitable for imperial (UNC/UNF) bolts.

Q: Is the black coating prone to chipping during installation?

A: The black zinc plating is baked on for durability. While minor scratching can occur during high-torque installation, it generally adheres well and maintains its protective qualities.

Q: Can these be used in saltwater environments?

A: While made of 304 stainless steel, the black zinc plating provides extra protection. However, for constant submersion in saltwater, we recommend 316 stainless steel washers for superior corrosion resistance.

Q: Do you provide a certificate of material compliance?

A: Yes, upon request, we can provide a mill test certificate verifying the 304 stainless steel composition for bulk orders. Please contact us after placing your order.

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

Flanged Copper Bushing with Washer Bearing Powder Metallurgy Oil-Impregnated Copper Bushing with Shoulder Step Flange Copper Sleeve Inner Diameter 1-30

$0.76

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