DIN985 Prevailing Torque Lock Nuts

Place of Origin CHINA
Brand Name QBH
Certification ISO9001
Model Number M5-M48
Minimum Order Quantity 900KG
Price 1000USD-1500USD/TON
Packaging Details 25kg Carton+900kg/Pallet or 5KG/CTN
Delivery Time 30days
Supply Ability 500TON/MONTH
Product Details
Standard DIN985 Material Carbon Steel
Size M5-M48 Grade 6 8 10
Color ZP YZP NICKEL Sample Free Samples
Lead Time Per On Order Quantity Type Hexagon Head
Function Fastening,Fastening And Decoration,Connection,Prevention Of Thievery Advantage We Can Manufacture According To Client Design,OEM / ODM / Customized Service Provided
Oem Yes,welcome Thread Metric
Package Suitable For Sea And Air Transportation Or As Required,Cartons&pallets Or According To Custom
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DIN985 Prevailing Torque Lock Nuts

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M5 Prevailing Torque Lock Nuts

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Class 6 Galvanized Nylon Lock Nut

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Product Description

How to use a Nylon lock nuts.pdf

 

Class 6 Galvanized Nylon Lock Nut

 

Specification

 

QBH DIN 985 Lock Nuts 2 results found that include 27 products Locknuts lock fasteners in place to keep them from backing out or loosening due to vibration or torque. A locknut is commonly used in place of a standard nut on vibrating machinery and when joining soft materials.

 

 

DIN 985 - Prevailing torque type hexagon thin nuts with nonmetallic insert

Current norm: DIN EN ISO 10511
Equivalent norms: ISO 10511; CSN 021492; UNI 7474;

 

Legend:

s - size of the hexagon
e - the diameter of the circumscribed circle (not less than)
d - the nominal diameter of the thread
h - height of the nut
m - hight of the nut part
da - Turning diameter shrinkage
dw - contact surface diameter

Makings:QBH

Steel: 5,6,8,10
Stainless: A2,A4
Plastic: -
Non Ferrous: -
Thread: 6H

 

 

Table according to DIN 985:

dimensions in mm

Thread d M3 M4 M5 M6 M7 M8 M10 M12 M14 M16 M18
- - - - - M8x1 M10x1 M12x1,5 M14x1,5 M16x1,5 M18x2
- - - - - - M10x1,25 M12x1,25 - - M18x1,5
P 0,5 0,7 0,8 1 1 1,25 1,5 1,75 2 2 2,5
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 nominal= max. 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
min. 1,65 2,2 2,75 3,3 3,85 4,4 5,5 6,6 7,7 8,8 9,9
s nominal= max. 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
Weight (7,85Kg/dm3) kg/1000pcs 0,5 1 1,4 2,4 3 5,1 10,6 17,2 26 34 45


 

Thread d M20 M22 M24 M27 M30 M33 M36 M39 M42 M45 M48
M20x2 M22x2 M24x2 M27x2 M30x2 M33x2 M36x3 M39x3 M42x3 M45x3 M48x3
M20x1,5 M22x1,5 - - - - - - - - -
P 2,5 2,5 3 3 3,5 3,5 4 4 4,5 4,5 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 nominal= max. 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
min. 11 12,2 13,2 14,8 16,5 18,2 19,8 21,5 23,1 24,8 26,5
s nominal= max. 30 32 36 41 46 50 55 60 65 70 75
min. 29,16 31 35 40 45 46 53,8 58,8 63,8 68,1 73,1
Weight (7,85Kg/dm3) kg/1000pcs 65 75 100 162 212 317 415 499 628 771 998

 

DIN985 Prevailing Torque Lock Nuts 0

 

 

Process flow

 

Cold forging

Annealing treatment(if need) ➨ wiredrawing ➨ clod forging ➨ tapping ➨lock nutmake heat treatment(if need)Finish Packing

 

Hot forging

Cutting material hot forging turning tapping lock nutmake heat treatment(if need)Finish Packing

 

 

Product Grade

 

Class 5 Class 6 Class 8 Class 10

 

 

 

Materials and Chemical compstition

 

1008

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu Al
0.06 0.06 0.33 0.013 0.003 0.01 0 0.01 0.028

 

 

1035

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu
0.34 0.13 0.73 0.012 0.002 0.02 0.01 0.02

 

 

10B21

CHEMICAL COMPOSI %
C Si Mn P S Cr B
0.2 0.04 0.81 0.017 0.007 0.017 0.0021

 

 

1045

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu
0.45 0.23 0.58 0.014 0.006 0.057 0.008 0.016

 

40CR

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu
0.4 0.21 0.54 0.015 0.008 0.95 0.02 0.02

 

35CRMO

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu Mo
0.35 0.22 0.59 0.01 0.003 0.93 0.01 0.01 0.21

 

 

42CRMO

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu Mo
0.42 0.27 0.92 0.013 0.004 1.01 0.03 0.04 0.2

 

Finish

 

PLAIN ZP YZP BLACK HDG DACROMET GEOMET CHROME NICKEL AND SO ON

 

 

PACKING

 

QBH BULK

 

20-25KG/CTN,36CTNS/PALLET

20-30KG/BAGS,36BAGS/PALLET

ONE TON/BOXES

50KG/ IRON DRUM,12 IRON DRUMS/PALLET

 

 

QBH SMALL PACKING

 

Packing in small boxes according to customer’s requirements

Packing in plastic bag according to customer’s requirements

 

 

QBH PALLET TYPE

 

SOLID WOOD FUMIGATION PALLET

EURO Pallet

THREE SPLINT PALLET

WOODEN BOX

 

 

MECHANICAL PROPERTY

 

TESTING STANDARD:DIN267- 4 OR ISO898-2

SIZE CLASS
04 05
PROOF LOAD
N/mm2

HV
NUT PROOF LOAD
N/mm2

HV
NUT
min max HEAT TREATMENT TYPE min max HEAT TREATMENT TYPE
/ M4 380 188 302 NO THIN NUT 500 272 353 YES THIN NUT
M4 M7
M7 M10
M10 M16
M16 M39
SIZE CLASS
4 5
PROOF LOAD
N/mm2
HV NUT PROOF LOAD
N/mm2
HV NUT
min max HEAT TREATMENT TYPE min max HEAT TREATMENT TYPE
/ M4 / / / / / 520 130 302 NO 1
M4 M7 580
M7 M10 590
M10 M16 610
M16 M39 510 117 302 NO 1 630 146
SIZE CLASS
6 8
PROOF LOAD
N/mm2
HV NUT PROOF LOAD
N/mm2
HV NUT
min max HEAT TREATMENT TYPE min max HEAT TREATMENT TYPE
/ M4 600 150 302 NO 1 800 180 302 NO 1
M4 M7 670 855 200
M7 M10 680 870
M10 M16 700 880
M16 M39 720 170 920 233 353 YES
SIZE CLASS
8 9
PROOF LOAD
N/mm2
HV NUT PROOF LOAD
N/mm2
HV NUT
min max HEAT TREATMENT TYPE min max HEAT TREATMENT TYPE
/ M4 / / / / / 900 170 302 NO 2
M4 M7 915 188
M7 M10 940
M10 M16 950
M16 M39 890 180 302 NO 2 920
SIZE CLASS
10 12
PROOF LOAD
N/mm2
HV NUT PROOF LOAD
N/mm2
HV NUT
min max HEAT TREATMENT TYPE min max HEAT TREATMENT TYPE
/ M4 1040 272 353 YES 1 1140 295 353 YES 1
M4 M7 1040 1140
M7 M10 1040 1140
M10 M16 1050 1140
M16 M39 1060 / / / / /
SIZE CLASS  
12
PROOF LOAD
N/mm2
HV NUT
min max HEAT TREATMENT TYPE
/ M4 1150 272 353 YES 2
M4 M7 1150
M7 M10 1160
M10 M16 1190
M16 M39 1200

 

The advantages of QBH

  •  QBH brand sales to the main quality assurance.
  •  Years of export trade management, excellent service, word-of-mouth guarantee.
  •  By working with TUV,escort for quality.
  •  Customization of non-standard parts can be made according to customer's requirements and drawings.
  •  For quality customers,we can provide a certain credit period.
     

Product application

       A nylon insert keeps metric bolt threads from coming loose due to vibration, wear, and temperature swings. About 25% stronger than medium-strength steel locknuts, these nuts are made of high-strength, Class 10 steel. They're used in valves, pumps, suspension systems, and other high-stress parts. A zinc plating prevents rust in wet areas. Combine with Class 10.9 metric bolts, which have similar strength. All are reusable but lose holding power after each use.

These locknuts meet ISO 7040 and ISO 7041-2 (formerly DIN 985 and DIN 982), which are international standards for dimensions. The ISO standards are functionally equivalent to the DIN standards with slight differences in width, height, or tolerances.