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Nord-Lock wedge-locking washers NL3 to NL130: inner and outer diameter, thickness, enlarged-OD (sp) pairs, two tables compared

What are the inner diameter, outer diameter and thickness of a Nord-Lock washer for an M6, M8, M10, M12, M16 or 1/2 in bolt? · Standard part · basis: Nord-Lock steel washer dimension tables from two distributors (Irontrade, TFC), checked against Nord-Lock's own product pages (NL3, NL1", NL1/2"sp); mm; 18 envelope files for the sizes where the two tables agree

Also called: nord-lock nl10 dimensions, nord lock washer m12 size, nl8 nord lock outer diameter, nord-lock nl16, nord lock washer sizes chart, nl6sp nord-lock, wedge lock washer m10 inside diameter, nord-lock 1/2 washer, nord lock nl20 thickness, nord-lock enlarged outer diameter sp, nl24 nord-lock id od, wedge locking washer dimensions

Exact dimensions. Every file is drawn at true size with no tolerance added. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your process's clearance before making the part. Mating features

length
48.5 mm
width
48.5 mm
height
4.6 mm

Notes

  • Nord-Lock washers are used as a pair: two washers with cam faces on one side and radial teeth on the other, so any thread movement has to ride up the cam and clamp harder. The tables give one Øi (inside), one Øo (outside) and one T per pair name (NL6 for M6, NL1/2" for 1/2 in). 'sp' is the enlarged-outer-diameter version at the same inside diameter (the maker: sp washers 'have the same inner diameter as the standard washers'). Standard sizes M3 to M42 and #5 to 1-1/2 in; sp sizes M3.5 to M36 and #6 to 1-3/8 in; NL45 to NL130 have no sp version in the tables.
  • Where the two tables disagree (listed, and flagged per row): NL1/4 (T 1.8); NL30sp (Øo 58.5, T 6.6); NL33sp (T 6.6); NL36 (T 6.6); NL39 (T 6.6); NL42 (T 6.6). Nord-Lock's own pages match the Irontrade table wherever they were read (NL3 3.4 / 7 / 1.8, NL1" 27.9 / 39 / 3.4, NL1/2"sp 13.5 / 25.4 / 3.4). Neither source says whether T is the thickness of the pair or of one washer. The files and rows use the Irontrade numbers, and only the 18 sizes where both tables agree are drawn.
  • Material (Nord-Lock NL3 page): steel EN 1.7182, hardness 465 HV1 or more, zinc flake coating (Delta Protekt), temperature -50 to 200 °C. Tolerances (Irontrade): Øi ±0.1 to ±0.5 mm depending on size, Øo ±0.2 to +0 / -2.0 mm, T ±0.25 mm (NL3 to NL42) and ±0.75 mm (NL45 to NL130). Stainless and other grades are separate Nord-Lock products not tabled here.
  • Files: plain annuli at Øi, Øo and T, one per pair (a pair is drawn as one ring; the cam faces and teeth are not drawn). NL3, 4, 5, 6, 8, 10, 12, 14, 16, 18, 20, 24 and the enlarged versions NL8sp, 10sp, 12sp, 16sp, 20sp, 24sp. Pair the washers cam face to cam face, bolt-side teeth against the bolt head and the joint (Nord-Lock's own instructions apply).

Nord-Lock wedge-locking washers NL3 to NL130: inner and outer… size chart

washerbolt sizeØi inside (mm)Øo outside (mm)T (mm)second table (TFC)
NL3M3 #53.471.8agrees
NL3.5M3.5 #63.97.61.8agrees
NL3.5spM3.5 #63.991.8agrees
NL4M4 #84.47.61.8agrees
NL4spM4 #84.491.8agrees
NL5M5 #105.491.8agrees
NL5spM5 #105.410.81.8agrees
NL6M66.510.81.8agrees
NL6spM66.513.52.5agrees
NL1/41/4 in7.211.52.5TFC prints T 1.8
NL1/4sp1/4 in7.213.52.5agrees
NL8M8 5/16 in8.713.52.5agrees
NL8spM8 5/16 in8.716.62.5agrees
NL3/83/8 in10.316.62.5agrees
NL3/8sp3/8 in10.3212.5agrees
NL10M1010.716.62.5agrees
NL10spM1010.7212.5agrees
NL11M11 7/16 in11.418.52.5agrees
NL12M121319.52.5agrees
NL12spM121325.43.4agrees
NL1/21/2 in13.519.52.5agrees
NL1/2sp1/2 in13.525.43.4agrees
NL14M14 9/16 in15.2233.4agrees
NL14spM14 9/16 in15.230.73.4agrees
NL16M16 5/8 in1725.43.4agrees
NL16spM16 5/8 in1730.73.4agrees
NL18M1819.5293.4agrees
NL18spM1819.534.53.4agrees
NL3/43/4 in2030.73.4agrees
NL3/4sp3/4 in20393.4agrees
NL20M2021.430.73.4agrees
NL20spM2021.4393.4agrees
NL22M22 7/8 in23.434.53.4agrees
NL22spM22 7/8 in23.4424.6agrees
NL24M2425.3393.4agrees
NL24spM2425.348.54.6agrees
NL11 in27.9393.4agrees
NL1sp1 in27.948.54.6agrees
NL27M2728.4425.8agrees
NL27spM2728.448.55.8agrees
NL30M30 1-1/8 in31.4475.8agrees
NL30spM30 1-1/8 in31.4555.8TFC prints Øo 58.5, T 6.6
NL33M33 1-1/4 in34.448.55.8agrees
NL33spM33 1-1/4 in34.458.55.8TFC prints T 6.6
NL36M36 1-3/8 in37.4555.8TFC prints T 6.6
NL36spM36 1-3/8 in37.4636.6agrees
NL39M39 1-1/2 in40.458.55.8TFC prints T 6.6
NL42M4243.2635.8TFC prints T 6.6
NL45M45 1-3/4 in46.2707agrees
NL48M4849.6757agrees
NL52M52 2 in53.6807agrees
NL56M56 2-1/4 in59.1857agrees
NL60M6063.1907agrees
NL64M64 2-1/2 in67.1957agrees
NL68M6871.11009.5agrees
NL72M7275.11059.5agrees
NL76M76 3 in79.11109.5agrees
NL80M80 3-1/8 in83.11159.5agrees
NL85M8588.11209.5agrees
NL90M9092.41309.5agrees
NL95M9597.41359.5agrees
NL100M100 4 in103.41459.5agrees
NL105M105108.41509.5agrees
NL110M110113.41559.5agrees
NL115M115118.41659.5agrees
NL120M120123.41709.5agrees
NL125M125128.41739.5agrees
NL130M130 5 in133.41789.5agrees

Mating features

Drawn at the exact size. Open press, slide, run and socket features by your process's clearance (tolerances by process); leave designed gaps and clamp fits as drawn.

featureexactmates withfitfiles
bore (Øi)NL3 Ø3.4, NL4 4.4, NL5 5.4, NL6 6.5, NL8 8.7, NL10 10.7, NL12 13.0, NL14 15.2, NL16 17.0, NL18 19.5, NL20 21.4, NL24 25.3 mmbolt or screw of the named size (M3 to M24); the bore is a clearance bore like the flat washer on flat-washers-metricslidenord-lock-nl*

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Nord-Lock (distributor table, Irontrade)Nord-Lock steel washers (zinc flake coated) dimension table: bolt size, Øi, Øo, T, weight, minimum package, NL3 to NL130 incl. spwebPublisher's page; dimensions are facts
TFC (distributor)Nord-Lock steel washers: ø, ø, T table, NL3 to NL130 incl. spwebPublisher's page; dimensions are facts
Nord-Lock Group (maker)Nord-Lock steel wedge-locking washers: product pages NL3 (d 3.4, D 7, T 1.8), NL1" (27.9 / 39 / 3.4) and NL1/2"sp (13.5 / 25.4 / 3.4); material, hardness 465 HV1, Delta ProtektwebPublisher's page; dimensions are facts

Free files

★ Free files 18 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

nord-lock-nl3Nord-Lock NL3 washer pair envelope for M3 #5: plain annulus Ø3.4 inside, Ø7 outside, 1.8 mm thick as printed (the maker pages do not say if T is the pair or one washer); cam faces not drawnSTEP · STL
nord-lock-nl4Nord-Lock NL4 washer pair envelope for M4 #8: plain annulus Ø4.4 inside, Ø7.6 outside, 1.8 mm thick as printed (the maker pages do not say if T is the pair or one washer); cam faces not drawnSTEP · STL
nord-lock-nl5Nord-Lock NL5 washer pair envelope for M5 #10: plain annulus Ø5.4 inside, Ø9 outside, 1.8 mm thick as printed (the maker pages do not say if T is the pair or one washer); cam faces not drawnSTEP · STL
nord-lock-nl6Nord-Lock NL6 washer pair envelope for M6: plain annulus Ø6.5 inside, Ø10.8 outside, 1.8 mm thick as printed (the maker pages do not say if T is the pair or one washer); cam faces not drawnSTEP · STL
nord-lock-nl8Nord-Lock NL8 washer pair envelope for M8 5/16 in: plain annulus Ø8.7 inside, Ø13.5 outside, 2.5 mm thick as printed (the maker pages do not say if T is the pair or one washer); cam faces not drawnSTEP · STL
nord-lock-nl10Nord-Lock NL10 washer pair envelope for M10: plain annulus Ø10.7 inside, Ø16.6 outside, 2.5 mm thick as printed (the maker pages do not say if T is the pair or one washer); cam faces not drawnSTEP · STL
nord-lock-nl12Nord-Lock NL12 washer pair envelope for M12: plain annulus Ø13 inside, Ø19.5 outside, 2.5 mm thick as printed (the maker pages do not say if T is the pair or one washer); cam faces not drawnSTEP · STL
nord-lock-nl14Nord-Lock NL14 washer pair envelope for M14 9/16 in: plain annulus Ø15.2 inside, Ø23 outside, 3.4 mm thick as printed (the maker pages do not say if T is the pair or one washer); cam faces not drawnSTEP · STL
nord-lock-nl16Nord-Lock NL16 washer pair envelope for M16 5/8 in: plain annulus Ø17 inside, Ø25.4 outside, 3.4 mm thick as printed (the maker pages do not say if T is the pair or one washer); cam faces not drawnSTEP · STL
nord-lock-nl18Nord-Lock NL18 washer pair envelope for M18: plain annulus Ø19.5 inside, Ø29 outside, 3.4 mm thick as printed (the maker pages do not say if T is the pair or one washer); cam faces not drawnSTEP · STL
nord-lock-nl20Nord-Lock NL20 washer pair envelope for M20: plain annulus Ø21.4 inside, Ø30.7 outside, 3.4 mm thick as printed (the maker pages do not say if T is the pair or one washer); cam faces not drawnSTEP · STL
nord-lock-nl24Nord-Lock NL24 washer pair envelope for M24: plain annulus Ø25.3 inside, Ø39 outside, 3.4 mm thick as printed (the maker pages do not say if T is the pair or one washer); cam faces not drawnSTEP · STL
nord-lock-nl8spNord-Lock NL8sp washer pair envelope for M8 5/16 in: plain annulus Ø8.7 inside, Ø16.6 outside, 2.5 mm thick as printed (the maker pages do not say if T is the pair or one washer); cam faces not drawnSTEP · STL
nord-lock-nl10spNord-Lock NL10sp washer pair envelope for M10: plain annulus Ø10.7 inside, Ø21 outside, 2.5 mm thick as printed (the maker pages do not say if T is the pair or one washer); cam faces not drawnSTEP · STL
nord-lock-nl12spNord-Lock NL12sp washer pair envelope for M12: plain annulus Ø13 inside, Ø25.4 outside, 3.4 mm thick as printed (the maker pages do not say if T is the pair or one washer); cam faces not drawnSTEP · STL
nord-lock-nl16spNord-Lock NL16sp washer pair envelope for M16 5/8 in: plain annulus Ø17 inside, Ø30.7 outside, 3.4 mm thick as printed (the maker pages do not say if T is the pair or one washer); cam faces not drawnSTEP · STL
nord-lock-nl20spNord-Lock NL20sp washer pair envelope for M20: plain annulus Ø21.4 inside, Ø39 outside, 3.4 mm thick as printed (the maker pages do not say if T is the pair or one washer); cam faces not drawnSTEP · STL
nord-lock-nl24spNord-Lock NL24sp washer pair envelope for M24: plain annulus Ø25.3 inside, Ø48.5 outside, 4.6 mm thick as printed (the maker pages do not say if T is the pair or one washer); cam faces not drawnSTEP · STL
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Plain text: sheet.txt · JSON: /api/geometry?object=nord-lock-wedge-locking-washers

Nord-Lock wedge-locking washers NL3 to NL130: inner and outer diameter, thickness, enlarged-OD (sp) pairs, two tables compared, isometric render of a generated part
Render of nord-lock-nl18 from the free STEP; not to scale.

Fits with

Flat washers, M2–M8 (ISO 7089), isometric render of a generated part
Flat washers, M2–M8 (ISO 7089)7 sizes★ 7 files
Flat washers, M10 to M24 (ISO 7089 / DIN 125-A), isometric render of a generated part
Flat washers, M10 to M24 (ISO 7089 / DIN 125-A)6 sizes★ 6 files
Spring lock washers, DIN 127 B (split washers, rectangular section): M2–M100 bore, outside diameter, width, thickness, free height34 sizes★ sheet
Serrated (tooth) lock washers, DIN 6798 forms A, J, V: M1.6–M30 bore, outside diameter, thickness, number of teeth58 sizes★ sheet
Large (fender) washers, DIN 9021 / ISO 7093: M2.5–M36 bore, outside diameter, thickness + nylon variant + 8 washer files, isometric render of a generated part
Large (fender) washers, DIN 9021 / ISO 7093: M2.5–M36 bore, outside diameter, thickness + nylon variant + 8 washer files50.0×50.0×3.0 mm★ 8 files
Flat washers, ISO 7090 (chamfered, normal series): M5–M64 bore, outside diameter, thickness + M30–M48 washer files, isometric render of a generated part
Flat washers, ISO 7090 (chamfered, normal series): M5–M64 bore, outside diameter, thickness + M30–M48 washer files110.0×110.0×8.0 mm★ 4 files
Hex nuts, M2–M8 (ISO 4032), isometric render of a generated part
Hex nuts, M2–M8 (ISO 4032)7 sizes★ 7 files
Hex nuts, M10 to M24 (ISO 4032 / DIN 934), isometric render of a generated part
Hex nuts, M10 to M24 (ISO 4032 / DIN 934)6 sizes★ 6 files
Nylon-insert lock nuts (nyloc), ISO 7040 and DIN 985, M3–M36: width across flats, height, bearing diameter + M10–M30 envelope files, isometric render of a generated part
Nylon-insert lock nuts (nyloc), ISO 7040 and DIN 985, M3–M36: width across flats, height, bearing diameter + M10–M30 envelope files30.0×26.0×22.8 mm★ 6 files
Structural flat washers ASTM F436 (round, hardened): inside and outside diameter, thickness, 1/2 to 1 in, isometric render of a generated part
Structural flat washers ASTM F436 (round, hardened): inside and outside diameter, thickness, 1/2 to 1 in50.8×50.8×4.496 mm★ 3 files

Questions

What are the dimensions of an NL10 Nord-Lock washer?

Inner Ø10.7 mm, outer Ø16.6 mm, T 2.5 mm; the enlarged NL10sp is Ø10.7 × Ø21.0 × 2.5 mm.

What does 'sp' mean on a Nord-Lock washer?

An enlarged outer diameter at the same inside diameter, for example NL12 is Ø19.5 and NL12sp is Ø25.4 mm.

Which Nord-Lock washer fits M12?

NL12: inner Ø13.0 mm, outer Ø19.5 mm, T 2.5 mm (NL12sp: Ø25.4 outer, T 3.4).