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DIN 985 Locking Nuts
  • DIN 985 Locking NutsDIN 985 Locking Nuts

DIN 985 Locking Nuts

Leader-Fastener® is a manufacturer and distributor of DIN 985 Locking Nuts. We have a complete line of service from having invested in production plants, export department and to having a quality control team and center to meet your requirements. We regard quality as the life of the company. We persist in good quality as the first policy and have established a set of quality control and inspection system according to the international standard. We have carried out ISO9001 Quality Guarantee System in every course of production, transportation and selling. We do hope we could be your partner in business by topping quality, knight service and competitive price in the near future and be your friends as well.

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Product Description

Metric DIN 985 nylon insert locking nuts low profile are prevailing torque type lock nuts which have a permanent undersized non metallic insert (nylon/polyamide) that produces friction between threads of mated components thereby increasing the resistance to loosening forces. Nylon insert lock nuts may be re-used a limited number of times because the threads of the mating bolt deform but do not cut into the polymer insert. These nuts are considered one-way lock nuts because they can only be installed one-way—top up. The nylon insert limits the use at elevated temperatures or when exposed to certain chemicals.


Product Specification of Leader-Fastener® DIN 985 Locking Nuts

Material : Carbon steel, Stainless steel, Alloy Steel, Brass.

Finishment: Black, Zinc Plated, Zinc Yellow, HDG, Phosphate, DACROMET, Geomet, Magin, Ruspert, Teflon, etc.


Leader-Fastener® DIN 985 - 1987 Prevailing Torque Type Hexagon Thin Nuts With Non-Metallic Insert

Thread Size
D
M3 M4 M5 M6 M7 M8 M10 M12 M14 M16 M18
P Pitch Coarse thread 0.5 0.7 0.8 1 1 1.25 1.5 1.75 2 2 2.5
Fine thread 1 / / / / / 1 1 1.5 1.5 1.5 2
Fine thread 2 / / / / / / 1.25 1.25 / / 1.5
da min 3 4 5 6 7 8 10 12 14 16 18
max 3.45 4.6 5.75 6.75 7.75 8.75 10.8 13 15.1 17.3 19.5
dw min 4.6 5.9 6.9 8.9 9.6 11.6 15.6 17.4 20.5 22.5 24.9
e min 6.01 7.66 8.79 11.05 12.12 14.38 18.9 21.1 24.49 26.75 29.56
h max=nominal size 4 5 5 6 7.5 8 10 12 14 16 18.5
min 3.7 4.7 4.7 5.7 7.14 7.64 9.64 11.57 13.3 15.3 17.66
m min 2.4 2.9 3.2 4 4.7 5.5 6.5 8 9.5 10.5 13
mw min 1.65 2.2 2.75 3.3 3.85 4.4 5.5 6.6 7.7 8.8 9.9
s max=nominal size 5.5 7 8 10 11 13 17 19 22 24 27
min 5.32 6.78 7.78 9.78 10.73 12.73 16.73 18.67 21.67 23.67 26.16
per 1000 units≈kg 0.5 1 1.4 2.4 3 5.1 10.6 17.2 26 34 45


Thread Size
D
M20 M22 M24 M27 M30 M33 M36 M39 M42 M45 M48
P Pitch Coarse thread 2.5 2.5 3 3 3.5 3.5 4 4 4.5 4.5 5
Fine thread 1 2 2 2 2 2 2 3 3 3 3 3
Fine thread 2 1.5 1.5 / / / / / / / / /
da min 20 22 24 27 30 33 36 39 42 45 48
max 21.6 23.7 25.9 29.1 32.4 35.6 38.9 42.1 45.4 48.6 51.8
dw min 27.7 29.5 33.2 38 42.7 46.6 51.1 55.9 60.6 64.7 69.4
e min 32.95 35.03 39.55 45.2 50.85 55.37 60.79 66.44 72.09 76.95 82.6
h max=nominal size 20 22 24 27 30 33 36 39 42 45 48
min 18.7 20.7 22.7 25.7 28.7 31.4 34.4 37.4 40.4 43.4 46.4
m min 14 15 15 17 19 22 25 27 29 32 36
mw min 11 12.2 13.2 14.8 16.5 18.2 19.8 21.5 23.1 24.8 26.5
s max=nominal size 30 32 36 41 46 50 55 60 65 70 75
min 29.16 31 35 40 45 49 53.8 58.8 63.8 68.1 73.1
per 1000 units≈kg 65 75 100 162 212 317 415 499 628 771 998


①,Product Grade:

≤ M 16: Class A

> M 16: Class B


②,Material:

Steel, Property class: ≤ M39: 5,6*,8,10; > M39: By Agreement. Standard DIN 267-4

* Only for nuts with fine thread

Material (insert): Nonmetallic, e.g. ployamide



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