Standard
AllDIN 912DIN 933DIN 7991ISO 7380DIN 916YB 818YJT 13001YB 819DIN 976-1YJT 13002DIN 913GB 901JISB 1122TDIN 6334GB 818DIN 914GB 12618DIN 967GB 873GB 9074.8DIN 985GB 109GB 867GB 819GB 869DIN 551GB 835GB 9074.4DIN 934GB 70DIN 338DIN 318GB 834GB 2673GB 5783DIN 915GB 5789GB 894.1GB 2672GB 893.1DIN 931GB 6170GB 119-76DIN 571DIN 1587GB 882GB 830GB 67GB 93GB 798YJT 3039GB 5782GB 878GB 9074.13DIN 6923GB 65ISO 7380.2GB 12617DIN 6926GB 9074.17
Material
All304 Stainless Steel40Cr Alloy Steel316 Stainless SteelPA66 Nylon10B21 Carbon SteelQ235 Carbon Steel1010A Carbon SteelCarbon SteelH58 BrassABS Plastic1010 Carbon Steel1022 Carbon Steel1022A Carbon Steel65Mn Spring SteelQ195 Carbon SteelSCM435 Alloy SteelH62 BrassAluminium Alloy303 Stainless SteelT2 CopperUnspecified35K Carbon SteelHSS High Speed SteelA3 Carbon Steel5052/7A03 AluminiumA00 AluminiumML08AL Carbon Steel201 Stainless SteelH59 Brass410 Stainless SteelTC4 Titanium AlloyChrome Vanadium SteelHSS 6542H68 Brass1008A Carbon Steel1008 Carbon SteelS2 Tool SteelPC (Clear)HSS M35 Cobalt70Mn Spring SteelPE Plastic35CrMo Alloy SteelSiliconeHigh Speed SteelNylonSCM440 Alloy SteelCR-V Chrome Vanadium SteelPlasticEco Rubber40Cr SteelPP + Q195 SteelImported HSS M35 CobaltH65 BrassZinc AlloyFibre Board50Mn Spring SteelSK5 Spring Steel45# Carbon SteelHSS + Alloy SteelWood
Grade
Surface Finish
AllPlainBlack Oxide (Hardened)Self ColourNickel PlatedBlackBlack OxideWhiteBlue-White Zinc PlatedWhite Zinc PlatedBlack Zinc PlatedColour Zinc PlatedAnodisedElectrophoretic BlackZinc PlatedBlack Nickel PlatedCopper PlatedClearRedFully GroundBlue YellowElectroplatedDacrometBrushedHardened Self ColourSandblastedFrosted Anti-SlipBlue Zinc PlatedBrass PlatedStainless Black OxideAnti-Loosening TreatedTitanium PlatedHardenedRed OxideHot Dip GalvanisedGreyChrome PlatedYellow Zinc PlatedSelf Colour (Hardened)Acid Wash YellowGoldMatteColour / Blue ZincSilverAntique BronzeGrey PhosphateWhite DiamondGlossyAntique Green BronzeAntique Red BronzeChrome ElectroplatedMatte PolishedZinc-Nickel BlackGreenCobaltCoatedCat's EyePhosphated Black
Diameter
All0#1/85/323/161/45/163/87/161/25/8M0.911/16-3/81/2-131/4-201/4-28G 1"G 1-1/2G 1-1/4G 1/2G 1/4G 1/8M1M1.0NPT 1/8ST1.0M1.2ST1.2M1.3M1.4ST1.41.51.5-101.5-6M1.5Φ1.5M1.6M1.7ST1.7M1.82#2#-56G 2"M2M2.0PH2ST2Φ2M2.2M2.3ST2.3M2.42.5M2.5Φ2.5Φ2.5-M1.6Φ2.5-M2M2.6ST2.6M2.8M2.933/8-163/8-24G 3/4G 3/8M3M3.0ST3Φ3Φ3.0-M2Φ3.0-M2.53.2M3.23.43.5M3.5Φ3.5Φ3.5-M2.5M3.6M3.94#4#-40M4M4*4M4.0Φ4Φ4.0-M34.2M4.24.5M4.5M4.855/16-185/16-24M5M5.0Φ5Φ5.0-M45.2M5.25.5M5.5Φ5.56"6#6#-326mmM6M6*6M6-0.75M6.0T6Φ6Φ6*1.0Φ6.0-M5M6.3Φ6.3M6.46.5M6.5Φ6.5-M577"M7T7Φ7*1.07.57.88#8#-32M8M8*7M8-1.0M8.0T8Φ8Φ8*1.0Φ8.0-M68.59M9T9Φ9*1.09.510#10#-2410#-3210-Piece Set10mmM10M10-1.0M10-1.25ST10T10Φ10Φ10*1.0Φ10-M810.51111mmM111212#-2412mmM12M12*8M12-1.0M12-1.25M12-1.5ST12Φ12Φ12-M1013-Piece SetM13Φ13-M101414mmM14M14*9M14-1.5Φ14M15T15Φ1516mmM16M16*10M16-1.5Φ16Φ16-M12M17M18Φ1819mmM19Φ1920 Series M320 Series M420 Series M520 Series M620mmM20T20Φ20Φ20-M16M2122mmM22Φ22M23M24Φ2425mmM25T25Φ25Φ25-M20M26M27T27M28Φ2830 Series M330 Series M430 Series M530 Series M630 Series M830mmM30T30Φ3032mmM32Φ32M33M3435mmM35M36M37M38M3940 Series M440 Series M540 Series M640 Series M840mmM40T40Φ40M4245 Series M1045 Series M445 Series M545 Series M645 Series M8M45M47M4850M50Φ50M52M55M56M58M6062-in-1M6265M65M68M70M7275M75M78M80M85M90M95100M100M105M108M110M115M120M125M130M135M140150200Cobalt/Spiral FluteN/ASpiral FluteStraight Flute
Length
All1 mm2 mm2.5 mm3 mm3.5 mm4 mm5 mm5.4 mm5.5 mm6 mm6.4 mm6.5 mm7 mm8 mm9 mm9.5 mm10 mm11 mm12 mm13 mm14 mm15 mm16 mm17 mm18 mm19 mm20 mm21 mm22 mm23 mm24 mm25 mm26 mm27 mm28 mm29 mm30 mm31 mm32 mm33 mm34 mm35 mm36 mm37 mm38 mm39 mm40 mm42 mm43 mm45 mm46 mm48 mm50 mm52 mm54 mm55 mm60 mm63 mm65 mm70 mm75 mm80 mm85 mm90 mm95 mm100 mm105 mm110 mm115 mm120 mm125 mm130 mm135 mm140 mm145 mm150 mm160 mm170 mm180 mm190 mm200 mm210 mm220 mm230 mm240 mm250 mm260 mm270 mm280 mm290 mm300 mm350 mm400 mm450 mm500 mm550 mm600 mm1000 mm
Thread
AllFull ThreadCoarse ThreadPart ThreadFine ThreadLeft Hand ThreadUNC / UNF ThreadMetricImperial (US)Aluminium / IronAll SteelBSW / BSF ThreadSerratedStandard Length, Flat HeadHalf SteelRight + Left Hand ThreadStraightMedium DutyFlatLong Ball EndFlat TypeTaperedFlat HeadFlat TailExtra Long Ball EndWide TypeNarrow TypeBent TypeImperial
Variant
AllKnurledStandard LengthFull ThreadDk≈8.0SerratedWeld TypeToothedDk≈6.0Dk≈7.0FlatDk≈5.0SeamlessDk≈10Self-DrillingMetricDk≈12European StandardBlue NylonBlack 304With WasherPlain ShankPurpleGoldBlackSilverGreenSingle HoleHex Bit (Metric)Without WasherDk≈11Fine Thread Round DieSocket TypeDk≈4.0Royal BlueTitanium GreyPeachWine RedOrangeSky BlueImperialHex Bit (Imperial)Basic TypeWhite NylonDk≈16ExtendedThrough HoleWith Weld SpotLeft Hand Round DieSingle PieceSquare BuckleGB StandardRound DieSingle TubeSetType ABlueMulti-ColourBlue VioletPinkRose Red
M3 Bolts, Screws, Nuts & Washers
M3 is a metric thread with an 3 mm nominal diameter and a coarse pitch of 0.5 mm (ISO 261). A standard hex head takes a 5.5 mm spanner across the flats.
In stock now: 3,720 lines; covering Screws (1,718), Socket Head Screws (664), Machine Screws (573), Stud Bolts & Thread Rods (523), Self-Tapping & Drilling Screws (452); priced from $0.0010 per piece. Every line is sold by the piece — one piece is a valid order.
Related values on the same axis
1/2 1/4 2# 10# 3/16 3/8 4# 5/16 5/8 6#
Product families covered
Screws 1,718 Socket Head Screws 664 Machine Screws 573 Stud Bolts & Thread Rods 523 Self-Tapping & Drilling Screws 452 Self-Tapping Screws 452 Standoffs 447 Single-End Hex Standoffs 249 Nuts 247 Set Screws 243 DIN912 226 Anchors & Fastener Assemblies 201
Frequently asked
What thread pitch and spanner size does M3 use?
A standard M3 metric coarse thread has a pitch of 0.5 mm (ISO 261). A hexagon head M3 takes a 5.5 mm spanner across the flats. We also stock fine-pitch and imperial equivalents — ask for the size list.
How much do M3 fasteners cost?
Prices in our catalogue for M3 run from $0.0010 to $16.0559 per piece, depending on diameter, length and material. There is no minimum order.
Is there a minimum order quantity for M3?
No. Every line is sold by the piece, so you can order a single piece to check the fit and the finish before committing to a production quantity. Your order total is confirmed in the cart, before payment.
What do you stock in M3?
M3 Bolts, Screws, Nuts & Washers currently covers 3,720 lines across Screws, Socket Head Screws, Machine Screws, Stud Bolts & Thread Rods, Self-Tapping & Drilling Screws, Self-Tapping Screws. The full list of sizes, materials and finishes on this page is live — use the filters at the top to narrow it down.
How quickly do you ship M3 fasteners, and can you send them to the EU or Russia?
In-stock lines leave our Foshan warehouse within 24–48 hours. We ship worldwide, including the EU and Russia. For the EU we are appointing a responsible person under Regulation (EU) 2023/988 (GPSR); for EAEU orders the conformity documents are handled with the importing party, who is the applicant of record. We can supply an EN 10204 3.1 mill test certificate, a full technical specification and a packing list with weights on request.
| Product | Diameter × Length | Material | Stock | Unit price | ||
|---|---|---|---|---|---|---|
 |
DIN 1587 Hex Cap Nut (One Piece) M3 PA66 Nylon
Blue |
M3 | PA66 Nylon | In stock | Log in to see prices | Log in to order |
 |
GB 6170 Hex Nut M3 PA66 Nylon
Blue |
M3 | PA66 Nylon | In stock | Log in to see prices | Log in to order |
 |
Thread Insert Installation Tool M3 Carbon Steel
Blue |
M3 | Carbon Steel | In stock | Log in to see prices | Log in to order |
 |
Wing Nut M3 PA66 Nylon
Blue |
M3 | PA66 Nylon | In stock | Log in to see prices | Log in to order |
 |
PE Protective Cap M3
Blue |
M3 | In stock | Log in to see prices | Log in to order |