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Nylon Insert Lock Nut

A hex nut with a nylon ring that grips the bolt thread, so it stays tight under vibration. The ring is compressed as the nut is tightened, creating friction that resists loosening. Install with a standard wrench or socket. Used on machinery, vehicles and equipment that vibrate.

In stockShips within 3 working daysMade to orderShips within 15 working days

M4 × 0.719 variantss7max.e7.66min.h5
SizeMaterialGradeFinishStockMOQpcs≈ kg/ 1,000 pcsQuantitypcs
M4Stainless SteelA2-70PassivatedIn stock2,0001.01
M4Stainless SteelA2-70PlainIn stock2,0001.01
M4Stainless SteelA4-80PassivatedIn stock2,0001.01
M4Stainless SteelA4-80PlainIn stock2,0001.01
M4Carbon SteelClass 04PlainIn stock2,0001.00
M4Carbon SteelClass 04Zinc PlatedIn stock2,0001.01
M4Carbon SteelClass 04DacrometIn stock2,0001.01
M4Carbon SteelClass 04BlackenedIn stock2,0001.00
M4Carbon SteelClass 04PhosphateIn stock2,0001.00
M4Carbon SteelClass 05PlainIn stock2,0001.00
M4Carbon SteelClass 05Zinc PlatedIn stock2,0001.01
M4Carbon SteelClass 05DacrometIn stock2,0001.01
M4Carbon SteelClass 05BlackenedIn stock2,0001.00
M4Carbon SteelClass 05PhosphateIn stock2,0001.00
M4Carbon SteelClass 8PlainIn stock2,0001.00
M4Carbon SteelClass 8Zinc PlatedIn stock2,0001.01
M4Carbon SteelClass 8DacrometIn stock2,0001.01
M4Carbon SteelClass 8BlackenedIn stock2,0001.00
M4Carbon SteelClass 8PhosphateIn stock2,0001.00
M5 × 0.819 variantss8max.e8.79min.h5
SizeMaterialGradeFinishStockMOQpcs≈ kg/ 1,000 pcsQuantitypcs
M5Stainless SteelA2-70PassivatedIn stock2,0001.41
M5Stainless SteelA2-70PlainIn stock2,0001.41
M5Stainless SteelA4-80PassivatedIn stock2,0001.41
M5Stainless SteelA4-80PlainIn stock2,0001.41
M5Carbon SteelClass 04PlainIn stock2,0001.40
M5Carbon SteelClass 04Zinc PlatedIn stock2,0001.41
M5Carbon SteelClass 04DacrometIn stock2,0001.41
M5Carbon SteelClass 04BlackenedIn stock2,0001.40
M5Carbon SteelClass 04PhosphateIn stock2,0001.40
M5Carbon SteelClass 05PlainIn stock2,0001.40
M5Carbon SteelClass 05Zinc PlatedIn stock2,0001.41
M5Carbon SteelClass 05DacrometIn stock2,0001.41
M5Carbon SteelClass 05BlackenedIn stock2,0001.40
M5Carbon SteelClass 05PhosphateIn stock2,0001.40
M5Carbon SteelClass 8PlainIn stock2,0001.40
M5Carbon SteelClass 8Zinc PlatedIn stock2,0001.41
M5Carbon SteelClass 8DacrometIn stock2,0001.41
M5Carbon SteelClass 8BlackenedIn stock2,0001.40
M5Carbon SteelClass 8PhosphateIn stock2,0001.40
M6 × 119 variantss10max.e11.05min.h6
SizeMaterialGradeFinishStockMOQpcs≈ kg/ 1,000 pcsQuantitypcs
M6Stainless SteelA2-70PassivatedIn stock2,0002.42
M6Stainless SteelA2-70PlainIn stock2,0002.42
M6Stainless SteelA4-80PassivatedIn stock2,0002.42
M6Stainless SteelA4-80PlainIn stock2,0002.42
M6Carbon SteelClass 04PlainIn stock2,0002.40
M6Carbon SteelClass 04Zinc PlatedIn stock2,0002.42
M6Carbon SteelClass 04DacrometIn stock2,0002.41
M6Carbon SteelClass 04BlackenedIn stock2,0002.40
M6Carbon SteelClass 04PhosphateIn stock2,0002.40
M6Carbon SteelClass 05PlainIn stock2,0002.40
M6Carbon SteelClass 05Zinc PlatedIn stock2,0002.42
M6Carbon SteelClass 05DacrometIn stock2,0002.41
M6Carbon SteelClass 05BlackenedIn stock2,0002.40
M6Carbon SteelClass 05PhosphateIn stock2,0002.40
M6Carbon SteelClass 8PlainIn stock2,0002.40
M6Carbon SteelClass 8Zinc PlatedIn stock2,0002.42
M6Carbon SteelClass 8DacrometIn stock2,0002.41
M6Carbon SteelClass 8BlackenedIn stock2,0002.40
M6Carbon SteelClass 8PhosphateIn stock2,0002.40
M8 × 1.2528 variantss13max.e14.38min.h8ISO 10511: h = 6.76 mm
SizeMaterialGradeFinishStockMOQpcs≈ kg/ 1,000 pcsQuantitypcs
M8Stainless SteelA2-70PassivatedIn stock2,0005.15
M8Stainless SteelA2-70PlainIn stock2,0005.15
M8Stainless SteelA4-80PassivatedIn stock2,0005.15
M8Stainless SteelA4-80PlainIn stock2,0005.15
M8Carbon SteelClass 04PlainIn stock2,0005.10
M8Carbon SteelClass 04Zinc PlatedIn stock2,0005.14
M8Carbon SteelClass 04Hot Dip GalvanizedIn stock2,0005.37
M8Carbon SteelClass 04DacrometIn stock2,0005.12
M8Carbon SteelClass 04BlackenedIn stock2,0005.10
M8Carbon SteelClass 04PhosphateIn stock2,0005.10
M8Carbon SteelClass 05PlainIn stock2,0005.10
M8Carbon SteelClass 05Zinc PlatedIn stock2,0005.14
M8Carbon SteelClass 05Hot Dip GalvanizedIn stock2,0005.37
M8Carbon SteelClass 05DacrometIn stock2,0005.12
M8Carbon SteelClass 05BlackenedIn stock2,0005.10
M8Carbon SteelClass 05PhosphateIn stock2,0005.10
M8Carbon SteelClass 8PlainIn stock2,0005.10
M8Carbon SteelClass 8Zinc PlatedIn stock2,0005.14
M8Carbon SteelClass 8Hot Dip GalvanizedIn stock2,0005.37
M8Carbon SteelClass 8DacrometIn stock2,0005.12
M8Carbon SteelClass 8BlackenedIn stock2,0005.10
M8Carbon SteelClass 8PhosphateIn stock2,0005.10
M8Carbon SteelClass 10PlainIn stock2,0005.10
M8Carbon SteelClass 10Zinc PlatedIn stock2,0005.14
M8Carbon SteelClass 10Hot Dip GalvanizedIn stock2,0005.37
M8Carbon SteelClass 10DacrometIn stock2,0005.12
M8Carbon SteelClass 10BlackenedIn stock2,0005.10
M8Carbon SteelClass 10PhosphateIn stock2,0005.10
M10 × 1.528 variantss17max.e18.9min.h10ISO 10511: s = 16 mm, e ≥ 17.77 mm, h = 8.56 mm
SizeMaterialGradeFinishStockMOQpcs≈ kg/ 1,000 pcsQuantitypcs
M10Stainless SteelA2-70PassivatedIn stock1,00010.71
M10Stainless SteelA2-70PlainIn stock1,00010.71
M10Stainless SteelA4-80PassivatedIn stock1,00010.71
M10Stainless SteelA4-80PlainIn stock1,00010.71
M10Carbon SteelClass 04PlainIn stock1,00010.60
M10Carbon SteelClass 04Zinc PlatedIn stock1,00010.66
M10Carbon SteelClass 04Hot Dip GalvanizedIn stock1,00011.04
M10Carbon SteelClass 04DacrometIn stock1,00010.64
M10Carbon SteelClass 04BlackenedIn stock1,00010.60
M10Carbon SteelClass 04PhosphateIn stock1,00010.60
M10Carbon SteelClass 05PlainIn stock1,00010.60
M10Carbon SteelClass 05Zinc PlatedIn stock1,00010.66
M10Carbon SteelClass 05Hot Dip GalvanizedIn stock1,00011.04
M10Carbon SteelClass 05DacrometIn stock1,00010.64
M10Carbon SteelClass 05BlackenedIn stock1,00010.60
M10Carbon SteelClass 05PhosphateIn stock1,00010.60
M10Carbon SteelClass 8PlainIn stock1,00010.60
M10Carbon SteelClass 8Zinc PlatedIn stock1,00010.66
M10Carbon SteelClass 8Hot Dip GalvanizedIn stock1,00011.04
M10Carbon SteelClass 8DacrometIn stock1,00010.64
M10Carbon SteelClass 8BlackenedIn stock1,00010.60
M10Carbon SteelClass 8PhosphateIn stock1,00010.60
M10Carbon SteelClass 10PlainIn stock1,00010.60
M10Carbon SteelClass 10Zinc PlatedIn stock1,00010.66
M10Carbon SteelClass 10Hot Dip GalvanizedIn stock1,00011.04
M10Carbon SteelClass 10DacrometIn stock1,00010.64
M10Carbon SteelClass 10BlackenedIn stock1,00010.60
M10Carbon SteelClass 10PhosphateIn stock1,00010.60
M12 × 1.7528 variantss19max.e21.1min.h12ISO 10511: s = 18 mm, e ≥ 20.03 mm, h = 10.23 mm
SizeMaterialGradeFinishStockMOQpcs≈ kg/ 1,000 pcsQuantitypcs
M12Stainless SteelA2-70PassivatedIn stock1,00017.38
M12Stainless SteelA2-70PlainIn stock1,00017.38
M12Stainless SteelA4-80PassivatedIn stock1,00017.38
M12Stainless SteelA4-80PlainIn stock1,00017.38
M12Carbon SteelClass 04PlainIn stock1,00017.20
M12Carbon SteelClass 04Zinc PlatedIn stock1,00017.28
M12Carbon SteelClass 04Hot Dip GalvanizedIn stock1,00017.79
M12Carbon SteelClass 04DacrometIn stock1,00017.25
M12Carbon SteelClass 04BlackenedIn stock1,00017.20
M12Carbon SteelClass 04PhosphateIn stock1,00017.20
M12Carbon SteelClass 05PlainIn stock1,00017.20
M12Carbon SteelClass 05Zinc PlatedIn stock1,00017.28
M12Carbon SteelClass 05Hot Dip GalvanizedIn stock1,00017.79
M12Carbon SteelClass 05DacrometIn stock1,00017.25
M12Carbon SteelClass 05BlackenedIn stock1,00017.20
M12Carbon SteelClass 05PhosphateIn stock1,00017.20
M12Carbon SteelClass 8PlainIn stock1,00017.20
M12Carbon SteelClass 8Zinc PlatedIn stock1,00017.28
M12Carbon SteelClass 8Hot Dip GalvanizedIn stock1,00017.79
M12Carbon SteelClass 8DacrometIn stock1,00017.25
M12Carbon SteelClass 8BlackenedIn stock1,00017.20
M12Carbon SteelClass 8PhosphateIn stock1,00017.20
M12Carbon SteelClass 10PlainIn stock1,00017.20
M12Carbon SteelClass 10Zinc PlatedIn stock1,00017.28
M12Carbon SteelClass 10Hot Dip GalvanizedIn stock1,00017.79
M12Carbon SteelClass 10DacrometIn stock1,00017.25
M12Carbon SteelClass 10BlackenedIn stock1,00017.20
M12Carbon SteelClass 10PhosphateIn stock1,00017.20
M16 × 228 variantss24max.e26.75min.h16ISO 10511: h = 12.42 mm
SizeMaterialGradeFinishStockMOQpcs≈ kg/ 1,000 pcsQuantitypcs
M16Stainless SteelA2-70PassivatedIn stock1,00034.35
M16Stainless SteelA2-70PlainIn stock1,00034.35
M16Stainless SteelA4-80PassivatedIn stock1,00034.35
M16Stainless SteelA4-80PlainIn stock1,00034.35
M16Carbon SteelClass 04PlainIn stock1,00034.00
M16Carbon SteelClass 04Zinc PlatedIn stock1,00034.14
M16Carbon SteelClass 04Hot Dip GalvanizedIn stock1,00034.97
M16Carbon SteelClass 04DacrometIn stock1,00034.08
M16Carbon SteelClass 04BlackenedIn stock1,00034.00
M16Carbon SteelClass 04PhosphateIn stock1,00034.00
M16Carbon SteelClass 05PlainIn stock1,00034.00
M16Carbon SteelClass 05Zinc PlatedIn stock1,00034.14
M16Carbon SteelClass 05Hot Dip GalvanizedIn stock1,00034.97
M16Carbon SteelClass 05DacrometIn stock1,00034.08
M16Carbon SteelClass 05BlackenedIn stock1,00034.00
M16Carbon SteelClass 05PhosphateIn stock1,00034.00
M16Carbon SteelClass 8PlainIn stock1,00034.00
M16Carbon SteelClass 8Zinc PlatedIn stock1,00034.14
M16Carbon SteelClass 8Hot Dip GalvanizedIn stock1,00034.97

275 combinations shown

Matching components

Fully Threaded Hex Bolt DIN 933Full Thread Hex BoltDIN 933 · M3–M24Hexagon Head Bolt Partial Thread DIN 931Partial Thread Hex BoltDIN 931 · M5–M24Stud Bolt, Metal End 1d DIN 938Stud Bolt, Metal End 1dDIN 938 · M6–M20Threaded Rod DIN 975Threaded RodDIN 975 · M6–M36Flat Washer, Form A DIN 125Flat WasherDIN 125 · M3–M36Heavy Flat Washer for Spring Pin Bolts DIN 7349Heavy Duty Flat WasherDIN 7349 · M3–M24

Questions

Why is there no hot-dip galvanized option below M8?

The zinc layer is too thick for smaller threads, so hot-dip galvanizing starts at M8.

Low or high nylon insert lock nut?

This low version is lighter but carries less load. The high version (DIN 982) is full height and carries the full load of a matching bolt.

Order assurance

Reports & inspection

  • EN 10204 3.1 material certificate
  • Dimensional inspection report
  • Certificate of conformity
  • Mechanical test report
  • Chemical analysis report
  • Coating inspection report
  • Batch and lot traceability

Packaging & delivery

  • Bulk carton packing
  • Small boxes with outer cartons
  • Palletized shipment
  • Fumigation-free pallets
  • Inner poly bags
  • Buyer branding and labels

Related products

All-Metal Prevailing Torque Nut ISO 7042All-Metal Lock NutISO 7042 · M5–M36High Nylon Insert Lock Nut DIN 982High Nylon Insert Lock NutDIN 982 · M5–M24Hexagon Full Nut DIN 934Hex NutDIN 934 · M3–M36Hexagon Thin Nut, Chamfered DIN 439Chamfered Thin Hex NutDIN 439 · M6–M36Hex Nut, Style 2 (High) ISO 4033High Hex NutISO 4033 · M5–M36Hex Nut, Height 1.5d DIN 6330Tall Hex NutDIN 6330 · M6–M24
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