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 BoardSK5 Spring Steel50Mn 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 GroundBlueYellowElectroplatedDacrometBrushedHardened Self ColourSandblastedFrosted Anti-SlipBlue Zinc PlatedBrass PlatedStainless Black OxideAnti-Loosening TreatedTitanium PlatedHardenedRed OxideHot Dip GalvanisedGreyChrome PlatedYellow Zinc PlatedSelf Colour (Hardened)Acid Wash YellowGoldMatteSilverColour / Blue ZincAntique BronzeGrey PhosphateAntique Red BronzeAntique Green BronzeGlossyWhite DiamondChrome ElectroplatedMatte PolishedZinc-Nickel BlackGreenCoatedCobaltCat's EyePhosphated Black
Diameter
AllM6M4M5M8M3M10M12M2M2.5M16M14M20M3.5M18M1.6M24M2.6M1.4M22M2.3M1.7M4.8M4.2M1.23/81/25/161/4M3.2Φ10-M8Φ12-M1010#M5.5Φ8.0-M64#8#M4.0M1.0Φ6.0-M5M27M30M5.06#M3.0M1.5M6.33/16Φ5.0-M4M2.2Φ4.0-M3M3.9M2.42#Φ4M5.25/85/321/8Φ5Φ640 Series M8M6.4Φ8Φ37/16M55M336#-321/4-2030 Series M6M4.58#-325/16-18Φ13-M10Φ16-M1210#-244#-4045 Series M8Φ20-M163M36Φ25-M203/8-16M7M1M2.9M6.0M6*6M9M25Φ6.5-M5M8*75ST3M2.820 Series M5M108M420#2#-56M48M50Φ2Φ2.5M13M4*49Φ3.0-M2.5ST2.6M12*81/2-1310#-32Φ1.5ST2Φ2.5-M2Φ5.530 Series M8M1130 Series M430 Series M540 Series M540 Series M6ST1.7ST2.3M35M40M45M6045 Series M10M3.640 Series M4Φ3.0-M2112M15Φ6.3M28M32Φ3.5-M2.5Φ2.5-M1.6ST1.4M14*9M16*10Φ20M26M38N/A1.5-10Φ12M21M70M10045 Series M445 Series M545 Series M6M19M52M75M171/4-285/16-243/8-24Φ14Φ1822mmG 3/8G 1/8G 1/4G 1/220 Series M320 Series M4ST1.2M12-1.25M6-0.75M12-1.5M8-1.0M14-1.5M10-1.0M16-1.5M10-1.25M12-1.012#-243.47"M2.0Φ22M65M80M85M90M9525mmM1.3M1.8M3416mmΦ25Φ30T10T25T15T20T30T40PH2Φ3210.510mm1/16-3/8M39M56Φ10M236"M0.920 Series M613-Piece SetM105M110M115M120M37M47M58M62M68M72M78Φ50ST1.01432mm35mmSpiral FluteStraight FluteM6.5M8.0Φ16Φ196mmG 3/4G 1-1/4G 1-1/2G 1"NPT 1/830mm40mmST12T6T7T8T9T2719mm11mmΦ28Φ401.53.54.24.52.53.25.25.56.577.57.88.59.51120mm1.5-6Cobalt/Spiral FluteΦ3.5Φ6*1.0Φ7*1.0Φ8*1.0Φ9*1.0Φ10*1.0Φ15Φ24G 2"30 Series M312mm14mmST1010-Piece Set50657510015020062-in-1M125M130M135M140
Length
All12 mm20 mm10 mm25 mm30 mm16 mm8 mm40 mm35 mm50 mm6 mm45 mm5 mm60 mm14 mm100 mm4 mm80 mm70 mm18 mm55 mm90 mm3 mm22 mm120 mm150 mm15 mm110 mm140 mm65 mm130 mm200 mm75 mm160 mm180 mm2 mm7 mm13 mm9 mm170 mm28 mm190 mm32 mm250 mm1 mm38 mm19 mm1000 mm11 mm85 mm300 mm95 mm500 mm2.5 mm17 mm350 mm6.4 mm33 mm52 mm220 mm21 mm230 mm240 mm210 mm400 mm3.5 mm63 mm24 mm260 mm9.5 mm280 mm37 mm290 mm270 mm135 mm105 mm27 mm125 mm26 mm115 mm43 mm39 mm48 mm36 mm600 mm550 mm450 mm145 mm31 mm29 mm23 mm34 mm46 mm6.5 mm54 mm5.5 mm5.4 mm42 mm
Thread
AllFull ThreadCoarse ThreadPart ThreadFine ThreadLeft Hand ThreadUNC / UNF ThreadMetricImperial (US)Aluminium / IronAll SteelBSW / BSF ThreadSerratedStandard Length, Flat HeadHalf SteelRight + Left Hand ThreadStraightMedium DutyFlat Long Ball EndFlat TypeTaperedFlat HeadFlat TailExtra Long Ball EndWide TypeNarrow TypeBent TypeImperial
Brand
Variant
AllKnurledStandard LengthFull ThreadDk≈8.0SerratedWeld TypeToothedDk≈6.0Dk≈7.0FlatDk≈5.0SeamlessDk≈10Self-DrillingMetricDk≈12European StandardBlue NylonBlack 304With WasherPlain ShankGoldGreenSilverBlackPurpleHex Bit (Metric)Single HoleDk≈11Without WasherSocket TypeFine Thread Round DieDk≈4.0OrangeSky BlueTitanium GreyWine RedPeachRoyal BlueImperialHex Bit (Imperial)Basic TypeWhite NylonDk≈16ExtendedThrough HoleWith Weld SpotSingle PieceSquare BuckleLeft Hand Round DieGB StandardRound DieType ASingle TubeSetBluedDk≈3.0PinkBlueRose 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 Screws (452); priced from $0.0010 per piece. Every line is sold by the piece — one piece is a valid order — and volume discounts apply automatically from 5%.
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 Screws 452 Self-Tapping & Drilling 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, and volume discounts apply automatically from 5%.
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. Volume discounts start at 5% and step down as the quantity rises.
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 Screws, Self-Tapping & Drilling 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.
