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DIN 979 Castle Nut
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  • DIN 979 Castle NutDIN 979 Castle Nut

DIN 979 Castle Nut

Leader-Fastener® is a manufacturer and distributor of DIN 979 Castle Nut. 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 Leader-Fastener® DIN 979 Castle Nut are hex nuts where slots are cut into one side of the nut (DIN 979 up to 12mm dia) or through the crown (>/= 12mm dia). These slots are designed to offer a locking feature where a split pin/cotter pin (DIN 94), R clip or safety wire can aligned through the slots and guided through a hole drilled in the shank of the mated bolt. They are similar to DIN 935 but are thinner making them ideal when there are space restrictions.


Product Specification of Leader-Fastener® DIN 979 Castle Nut

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

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


DIN 979 - 2013 Hexagon Thin Slotted Nuts And Castle Buts With Metric Coarse And Fine Pitch Thread,Product Grades A and B


Thread Size
D
M6 (M7) M8 M10 M12 (M14) M16 (M18) M20 (M22)
P Pitch (Coarse thread) 1 1 1.25 1.5 1.75 2 2 2.5 2.5 2.5
Fine thread - - 1 1 1.5 1.5 1.5 1.5 2 1.5
Fine thread - - - 1.25 1.25 - - 2 1.5 2
de max - - - - 16 18 22 25 28 32
min - - - - 15.57 17.57 21.48 24.3 27.3 31
e min 11.05 12.12 14.38 17.77 20.03 23.35 26.75 29.56 32.95 37.29
k max=nominal size 5 5.5 6.5 8 10 11 13 15 16 18
min 4.7 5.2 6.14 7.64 9.64 10.57 12.57 14.3 15.3 17.3
w max 2.5 3 3.5 4 5 6 7 9 10 10
min 2.25 2.75 3.2 3.7 4.7 5.7 6.64 8.64 9.64 9.64
n max 2.25 2.25 2.75 3.05 3.8 3.8 4.8 4.8 4.8 5.8
min 2 2 2.5 2.8 3.5 3.5 4.5 4.5 4.5 5.5
s max=nominal size 10 11 13 16 18 21 24 27 30 34
min 9.78 10.73 12.73 15.73 17.73 20.67 23.67 26.16 29.16 33


Thread Size
D
M24 (M27) M30 (M33) M36 (M39) M42 (M45) M48 (M52)
P Pitch (Coarse thread) 3 3 3.5 3.5 4 4 4.5 4.5 5 5
Fine thread 2 2 2 2 3 3 3 3 3 3
Fine thread - - - - - - - - - -
de max 34 38 42 46 50 55 58 62 65 70
min 33 37 41 45 49 53.8 56.8 60.8 63.8 68.8
e min 39.55 45.2 50.85 55.37 60.79 66.44 71.3 76.95 82.6 88.25
k max=nominal size 19 22 24 26 29 31 33 34.5 36 38
min 18.16 21.16 23.16 25.16 28.16 30 32 33.5 35 37
w max 11 14 15 17 20 22 22 22.5 24 26
min 10.57 13.57 14.57 16.57 19.48 21.48 21.48 22.02 23.48 25.48
n max 5.8 5.8 7.36 7.36 7.36 7.36 9.36 9.36 9.36 9.36
min 5.5 5.5 7 7 7 7 9 9 9 9
s max=nominal size 36 41 46 50 55 60 65 70 75 80
min 35 40 45 49 53.8 58.8 63.1 68.1 73.1 78.1


①,Number of slots

d≤39mm: 6

d>39mm: 8


②,Material:

a) Steel, Strength class (material): d≤39mm: 04, 05; d>39mm: subject to agreement. Standard DIN EN ISO 898-2

b) Stainless steel, Strength class (material): d≤20mm: A2-035; 20mm<d≤39mm: A2-025; d>39mm: subject to agreement. Standard DIN EN ISO 3506-2

c) Non-ferrous, Strength class (material): CuZn, CU2 or CU3 at the discretion of the manufacturer. Standard DIN EN 28839



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