Prevailing Torque Nut has a thread locking system that withdraws the screw reverse turning or backing off; all systems provides a thread interference characteristic that withdraws loosening under vibration. They are also named as stiff nuts, prevailing torque nuts, and lock nuts. Prevailing Torque Lock Nuts is one piece, prevailing torque hex nuts with a flat bottom bearing surface and a conical top and chamfered corners. The locking action is made by twisting the top threads. It resists loosening caused by vibration, shock, and other dynamic forces. Since it is a top locking and only its bottom surface is flat, it is as examined as one way lock nuts due to they are installed one way conical top up. It is used in automotive, agricultural equipment and in the metalworking industries, it also known as automation style lock nuts, all metal lock nuts, all steel lock nuts and top lock nuts.
DIN 980 lock nut feature has unique design that stops it from loosening when exposed to vibrations. There are various types of lock nuts, the most common of which are nylon-insert lock nuts and metal lock nuts. Nylon lock nuts feature a layer of nylon material which covers the interior threading. In comparison, metal lock nuts feature a crowned top that can be grooved to secure the nut in place. Stover Nuts is a hexagon all-metal prevailing torque self-locking nut. The self-locking function of the DIN 980V Nut is produced by deflecting the top threads by creating an interference fit that is still effective and can be reused several times. Stainless Steel Stover nuts are resistant to dynamic loads, shocks and vibration.
Prevailing Torque Nut
Prevailing Torque Lock Nuts
Prevailing Torque Hex Nut
DIN Standard of Prevailing Torque Nut | DIN 980, DIN 980V, DIN 982, DIN 985, DIN 936, DIN 929, DIN 1587, DIN 439, DIN 315 |
British standards of Prevailing Torque Nut | BS 57 |
Stainless Steel Prevailing Torque Nut Size |
Manufacturing M2 to M160 and Custom Metric Stainless Steel Prevailing Torque Nut |
Prevailing Torque Nut Size Inch |
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Prevailing Torque Nut Size Metric |
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Standard | IS, ANSI, ASTM, DIN, ISO, JIS, GB, ASME, BS, UNI, CSN, EU, IFI, PN, and all International Standards
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Length | 3 mm to 200 mm |
Stainless Steel Prevailing Torque Nut US Threads | METRIC, Unified national extra fine (UNEF), Unified national fine (UNF), UNJF, UNJC, Unified National Coarse (UNC), BSW, BSF, UNR, UNK, Constant-pitch threads Prevailing Torque Nut manufacturers in India |
SS Prevailing Torque Nut Dimensions | ASME B 18.2.2 |
Metric Prevailing Torque Nut Tolerances | +/-0.01mm to +/-0.05mm |
Prevailing Torque Nut Surface Finish | Zinc, Plated zinc-nickel, Geometry, Hot Dip Galvanised (HDG), Bright Zinc Plated (BZP), Self-Colour, black oxide, Dacroment, Nickel plated, Stainless Steel Passivated, Anodizing, Sherardized |
Material Origin | Stainless Steel Prevailing Torque Nut are Western European. Eastern origin possible on request. |
Other Top Prevailing Torque Nut Manufacturers | Omni, APL, Unbrako, Kundan, Deepak Fasteners, Sundaram Precision, Infasco, Caparo, EBY Fastener, SPAX® Screws, GKW Etc. |
SS Prevailing Torque Nut British standards |
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Why Jignesh Steel? |
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Test Certificates provided by Prevailing Torque Nut manufacturers |
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Free Samples | Yes |
Delivery time | Regular delivery of Prevailing Torque Nut is about 7-15 days, custom size Stover Nuts will according to special requirement |
Payment Terms | Western Union, T/T, Paypal, L/C or Trade Assurance 30% deposit & balance before shipping |
Other Fasteners | |
Common Prevailing Torque Nut material grades |
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Port of Dispatch | Mumbai or Kalamboli ports in Maharashtra state of India |
Prevailing Torque Nut Application and Uses | Industrial, Wind tower, Railway, Nuclear power, Construction, Electronic, and Automotive indutries, these end users prefer to buy from Prevailing Torque Nut manufacturers in India |
ISO - International Organization for Standardization |
Products | FOB Price US $ |
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Prevailling Torque DIN 980 Self Locking Nut Stainless Steel 304 316 Hex Lock Nut | US $0.08-$0.30/ Piece |
ISO 7042 Prevailing Torque SS Self Locking Nuts Din 980 | US $0.01-$0.06/ Piece |
DIN 6925 Prevailing Torque Type Self Locking Nut | US $0.003-$0.05/ Piece |
M10 M16 Carbon Steel Prevailing Torque Type Hexagon Nut DIN980 | US $0.01-$0.50/ Piece |
Prevailing Torque Hexagon Nuts | US $0.01-$0.50/ Piece |
Call us or send us an email to sales@jigneshsteel.com for more details.
DIN 980 lock nut
DIN 980v nut
Stainless Steel Stover Nuts
Prevailing Lock Nut
Prevailing Torque Type Hex Nut
DIN 980 lock nut
Size | Diam.* | Height | ||||
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Hex Nut | Machine Screw Nut | Hex Nut | Jam Nut | Nylock Nut | Machine Screw Nut | |
0 | – | 5/32 | – | – | – | 3/64 |
1 | – | 5/32 | – | – | – | 3/64 |
2 | – | 3/16 | – | – | 9/64 | 1/16 |
3 | – | 3/16 | – | – | 9/64 | 1/16 |
4 | – | 1/4 | – | – | 9/64 | 3/32 |
6 | – | 5/16 | – | – | 11/64 | 7/64 |
8 | – | 11/32 | – | – | 15/64 | 1/8 |
10 | – | 3/8 | – | – | 15/64 | 1/8 |
12 | – | 7/16 | – | – | 5/16 | 5/32 |
1/4 | 7/16 | 7/16 | 7/32 | 5/32 | 5/16 | 3/16 |
5/16 | 1/2 | 9/16 | 17/64 | 3/16 | 11/32 | 7/32 |
3/8 | 9/16 | 5/8 | 21/64 | 7/32 | 29/64 | 1/4 |
7/16 | 11/16 | – | 3/8 | 1/4 | 29/64 | – |
1/2 | 3/4 | – | 7/16 | 5/16 | 19/32 | – |
9/16 | 7/8 | – | 31/64 | 5/16 | 41/64 | – |
5/8 | 15/16 | – | 35/64 | 3/8 | 3/4 | – |
3/4 | 1-1/8 | – | 41/64 | 27/64 | 7/8 | – |
7/8 | 1-5/16 | – | 3/4 | 31/64 | 63/64 | – |
1 | 1-1/2 | – | 55/64 | 35/64 | 1-3/64 | – |
* This is the diameter across the flats. It is also the size of wrench to use. |
Size | S | H | M | STD Pitch |
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M4 | 7 | 4 | 2.5 | 0.7 |
M5 | 8 | 5 | 3.5 | 0.8 |
M6 | 10 | 6 | 4.5 | 1 |
M8 | 13 | 8 | 6 | 1.25 |
M10 | 17 | 10 | 7.5 | 1.5 |
M12 | 19 | 12 | 8.5 | 1.75 |
M14 | 22 | 14 | 11.5 | 2 |
M16 | 24 | 16 | 12.5 | 2 |
M18 | 27 | 18 | 14 | 2.5 |
M20 | 30 | 20 | 15.4 | 2.5 |
M22 | 32 | 22 | 16.9 | 2.5 |
M24 | 36 | 24 | 18.5 | 3 |
M27 | 41 | 27 | 20.8 | 3 |
M30 | 46 | 30 | 23.1 | 3.5 |
M33 | 50 | 3 | 25.4 | 3.5 |
M36 | 55 | 36 | 27.2 | 4 |
Units in mm
Prevailing Torque Nut Grade Identification Marking |
Prevailing Torque Nut Specification | Prevailing Torque Nut Material | Nominal Size ub Inches | Prevailing Torque Nut Proof Load Stress ksi |
Hardness Rockwell |
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Min | Max | |||||
![]() No Mark |
ASTM A563 - Grade 0 |
Carbon Steel |
1/4 thru 1-1/2 |
69 | B55 | C32 |
ASTM A563 - Grade A |
Carbon Steel |
1/4 thru 1-1/2 |
90 | B68 | C32 | |
ASTM A563 - Grade B Prevailing Torque Nut | Carbon Steel | 1/4 thru 1 | 120 | B69 | C32 | |
over 1 thru 1-1/2 |
105 | |||||
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ASTM A563 - Grade C |
Carbon Steel May be Quenched and Tampered |
1/4 thru 4 | 144 | B78 | C38 |
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ASTM A563 - Grade C3 |
Atmospheric Corrosion Resistant Steel May be Quenched and Tampered |
1/4 thru 4 | 144 | B78 | C38 |
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ASTM A563 - Grade D |
Carbon Steel May be Quenched and Tampered |
1/4 thru 4 | 150 | B84 | C38 |
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ASTM A563 - Grade DH Prevailing Torque Nut |
Carbon Steel Quenched and Tampered |
1/4 thru 4 | 175 | C24 | C38 |
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ASTM A563 - Grade DH3 |
Atmospheric Corrosion Resistant Steel,Quenched and Tampered |
1/4 thru 4 | 175 | C24 | C38 |
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ASTM A194 - Grade 1 |
Carbon Steel |
1/4 thru 4 | 130 | B70 | - |
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ASTM A194 - Grade 2 |
Medium Carbon Steel |
1/4 thru 4 | 150 | 159 | 352 |
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ASTM A194 - Grade 2H Prevailing Torque Nut |
Medium Carbon Steel, Quenched and Tempered |
1/4 thru 4 | 175 | C24 | C38 |
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ASTM A194 - Grade 2HM |
Medium Carbon Steel, Quenched and Tempered |
1/4 thru 4 | 150 | 159 | 237 |
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ASTM A194 - Grade 4 |
Medium Carbon Alloy Steel, Quenched and Tempered |
1/4 thru 4 | 175 | C24 | C38 |
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ASTM A194 - Grade 7 Prevailing Torque Nut |
Medium Carbon Alloy Steel,Quenched and Tempered |
1/4 thru 4 | 175 | C24 | C38 |
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ASTM A194 - Grade 7M |
Medium Carbon Alloy Steel, Quenched and Tempered |
1/4 thru 4 | 150 | 159 | 237 |
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