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316 Stainless Steel Plain Washers manufacturer in India

What is ISO 7089?

Formulated by the ISO or as also known as International Organization for Standardization, the ISO 7089 is an International Standard that stipulates the attributes of washers. This standard covers any Stainless Steel Plain Washer which belongs to regular series or grade-A products. The production of these washers is in the hardness classes ranging between 200 HV and 300 HV. In addition to the hardness value, the manufacture of Stainless Steel Flat Washers is also in nominal sizes or nominal thread diameters, which ranges between 1.6 mm to about 64 mm.

Flat washer vs fender washer

A flat washer is also a plain washer. The purpose of using 316 Stainless Steel Flat Washers is common in those instances when the hole of the said washer has a larger diameter as compared to the nut used to the set-up. While a fender washer may look similar to a Grade 8 Flat Washer, the recognizable difference is that the outside diameter of a fender type is conventionally much larger or is inversely proportional to its centre hole. In terms of functionality; a fender as well as a Number 10 Flat Washer, would support the nut and bolt. They evenly distribute the load across their surface.

Difference between flat washer Type A and Type B

Though the type of washers is confused as to their form, they are different. The standard for flat washers for general applications is the brainchild of the American National Standards Institute or as known as ANSI. A Steel Type A Flat Washer generally has broader tolerances and is used in areas where accuracy is not critical. On the other hand, applications with stringent tolerances where the outside diameters are characterized, specifically - as being narrow, regular or wide; for a set of distinct bolt sizes make use of a Type B Flat Washer.

Difference between SAE and USS flat washers

Developed by the Society of Automotive Engineers, or SAE, these 304 Stainless Steel Flat Washers were specified such that they broadly meet the demands of any automotive manufacturer. Unlike their USS counterparts, the SAE washers constitute a smaller Outer Diameter and their gauge could either be thin or thick. United States Standard or as referred to as the USS Grade 10.9 Flat Washer, was initiated as a means of meeting engineering requirements for industrial applications in various sectors such as production, maintenance as well as repair. While the Inner Diameter and Thickness specifications for both the SAE and USS washers are the same, the main difference between them is the Outer Diameter, which is larger in the USS 316 Ss Flat Washer.

Common Uses of Square Flat Washers

Unusually shaped, a square Thick Flat Washer is best suited for use in timber building and as reinforcements for concrete floors. These components are multi-faceted. Not only could they be employed with several kinds of fasteners, but they also evenly distribute larger loads through a wall or timber. As a square-shaped Thin Flat Washer can carry larger loads; they act as reinforcements for structural applications. In addition to evenly distributing a load of a fastener; a SS 304 Flat Washer aids in reducing both, heat and friction throughout the tightening process along with providing some level of electrical insulation.

Manufacturer of SS 304/ 316L Thick and Thin Flat Washer as per ISO 7089

Stainless Steel Flat Washers
Stainless Steel Flat Washers Price List India

Check M3-M12 metric stainless steel flat washer dimensions, Type A and Type B Number 10 Flat Washer as per ASME B18.21.1, DIN 9021/ 125/ 125a

Flat Washer (WITHOUT CHAMFER), Size M 5/5,3/15/1,2 (100 pcs set) INR 100/ set

Call us or send us an email to sales@jigneshsteel.com for more details.

316 Stainless Steel Flat Washers Specifications

Supplier & exporter of Grade 10.9 Flat Washer & ASTM F844 Extra Thick Heavy Duty Flat Washer at best price

ANSI - Stainless Steel Flat Washers American Standard ANSI B18.22.1
DIN - Stainless Steel Flat Washers German Standard DIN 125, DIN 127, DIN 9021, DIN 127b, DIN 125-1, DIN 433, DIN 126, DIN 6340, DIN 6916, DIN 125a
ISO Standard SS 316 A4-80 Flat Washers ISO 7089
Stainless Steel 304 Flat Washers Size Metric
  • Dia: M10 - M110
  • Length: 12 - 1200MM
AISI 410 Stainless Steel Flat Washers Size Inch
  • Dia: 1/2" - 4.0"
  • Length: 1/2" - 52"
Stainless Steel Flat Washers International Specification IS, ANSI, ASTM, DIN, ISO, JIS, GB, ASME, BS, UNI, CSN, EU, IFI, PN,
Flat Washers Standard
  • American ASME
  • Indian IS
  • International ISO
  • American SAE
  • German DIN
  • Spanish CSN
  • British BS
  • Italian UNI
  • Polish PN
  • European EU
8.8 Grade Flat Washers Standard Sizes M10, M4, M16, M36 M2.5, M6, M30, M12, M8, M14, M2, M3, M20, M24, M5 to M160
ASTM A193 Grade B7m Flat Washers Threads Unified national coarse (UNC), Unified national fine (UNF), Unified national extra fine (UNEF), UNJC and UNJF threads, UNK threads, UNR threads, Constant-pitch threads
MTC (Manufacturer Test Certificate) EN 10204 / 3.1
ASTM A193 Grade B8 Flat Washers Production Process
  • M2-M24: Cold Forging, Hot forging
  • M24-M100, machining and CNC for Customized connecting element
SA 193 Gr B8m Flat Washers Packing
  • Wooden Pallet, Canton, Carton / Small Box or as required
  • Carton size : 36* 24 *16 CM & 36 *24 *12 CM  or as required
  • Pallet size: Standard Euro Pallet 110* 80 *90 CM
Free Sample Yes if we have in stock
Payment Terms Paypal, Western Union, T/T (Telegraphic Transfer or Wire Transfer), L/C or Trade Assurance 30% deposit & balance before shipping
Preferred Flat Washers Drawing Formats JPEG, PDF, CAD, STP, IGS
Manufacturing Process
  • Heading
  • Machining
  • Threading
  • Heat treatment
  • Plating
  • Baking
  • QA
  • Package
  • Shipping
Delivery Time 7-15 working days as usual, It will based on the detailed order quantity.
Port of Dispatch Mumbai or Kalamboli ports in Maharashtra state of India
Flat Washers Plating Specifications
  • ASTM A153 Zinc coating (hot dip)
  • ASTM B695 zinc coating
  • ASTM F1941 Electrodeposited coatings (Zinc plating).
  • ASTM F2329 Zinc coating, hot dip
Types of Flat Washers

Check Grade 8 High Collar Flat Surface Washer & Class 10 Knurled Flat Washer sizes and dimensions in SAE/ USS

Stainless Steel Flat Washers

Stainless Steel Flat Washers

Stainless Steel 304 Plain Washer

Stainless Steel 304 Plain Washer

AISI 410 Stainless Steel Thick Flat Washer

AISI 410 Stainless Steel Thick Flat Washer

12.9 grade Thin Flat Washer

12.9 grade Thin Flat Washer

SA 193 Gr B7 Countersunk Flat Washer

SA 193 Gr B7 Countersunk Flat Washer

ASTM A320 L7 High Collar Flat Washer ISO 7089

ASTM A320 L7 High Collar Flat Washer ISO 7089

Stainless Steel A2-70 G304 SAE Flat Washer

Stainless Steel A2-70 G304 SAE Flat Washer

A193 Grade B8 Class 2 USS Flat Washer

A193 Grade B8 Class 2 USS Flat Washer

8.8 Grade Knurled Flat Washer

8.8 Grade Knurled Flat Washer

Flat Washers Material and Grades
Carbon Steel Flat Washers AISI 1018, AISI 1045, AISI 1117, AISI 12L14, AISI 1215, ASTM A36 Flat Washers, ASTM A29, A108, A549, SAE J429, ASTM A307 Grade A/ B/ C
High Tensile Flat Washers Grade 4.8, grade 8.8, grade 10.9, grade 12.9, grade 4.6, Grade 5.8, Grade 9.8 Flat Washers
Stainless Steel Flat Washers SS 201, SS 303, SS 304, SS 304L, SS 316, SS 316L, 316H, SS 317L, SS 321, SS 304H, SS 310, SS 410, 347, SS 420 Flat Washers, 904L, 18-8 Stainless Steel, Black Stainless Steel, A2 -70, A2 -80, A4 -70, A4 -80 Flat Washers, A193 B8C (347), A193 B8T (321), A193 B6 (410)
Martensitic Stainless Steel Flat Washers 15-5 PH (UNS S15500), 17-4 PH (UNS S17400), 17-7 PH (UNS S17700)
ASTM A193 Flat Washers ASTM A193 B6, B7, B7m, B8T, SA 193 B8, B8 Class 1/ Class 2, B8M Class 2, A193 B16, SA 193 Grade B6X Flat Washers
ASTM A449 Flat Washers ASTM A449 Type 1 (Plain carbon steel, alloy steel, carbon boron steel, alloy boron steel)
ASTM F593 Flat Washers 303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se, 316, 316L, 321, 347, 430, 430F, 410, 416, 416Se, 431, 630 (17-4) (Austenitic, Ferritic, Martensitic & Precipitation Hardening)
All ASTM Standard of Flat Washers ASTM A320, A325, A36, A320 L7 Flat Washers, L7m, A320 Grade B8, A320 B8m, A307, A540, A563, A354, A490, A593, F593C, F593D, F593G Flat Washers
ASTM F3125 Heavy hex structural bolts This includes A325, A325M, A490, A490M, F1852, and F2280 heavy hex structural bolts, A325 Type 1, Type 2, Type 3
Alloy Steel Flat Washers AISI 4140, AISI 4130, ASTM A193 B7/ B8 / B8M/ B8 Class 2/ B8M Class 2, ASTM A320 L7/ L43
Spring Steel Flat Washers C55S, C60S, C67S, C75S, C100S, 51CrV4, 80CrV2 Flat Washers
Brass Flat Washers 3602 / 2604 / H59 / H62, C36000 , C37700 ( HPb59), C38500 ( HPb58), C27200 (CuZn37), C28000 (CuZn40), Copper (99% Cu)
Free Cutting Steel Flat Washers 1213, 1215, 12L14
Aluminum Flat Washers Al6061, Al6063, 5052 /6061/ 6063 / 2017 / 7075
Titanium Flat Washers ASTM B348 / ASME SB348, Titanium Gr. 1, Titanium Gr. 2, Titanium Gr. 4, Titanium Gr. 5, Titanium Gr. 7 Flat Washers
UNS  R50250/GR.1 | R50400/GR.2 | R50550/GR.3 | R50700/GR.4 | GR.6 |R52400/GR.7 | R53400/GR.12 | R56320/GR.9 |R56400/GR.5
Copper Flat Washers T1, T2, C10100, C10200, C10300, C10400, C10500, C10910, C10700, C10800, C10920, TP1, TP2, C10930, C11000, C11300, C11400, C11500, C11600, C12000,C12200, C12300, TU1, TU2, C12500, C14500, C14510, C14200, C14420, C14520, C14530, C17200, C19200, C23000, C21000, C27000, C27400, C26000, C33000, C33200, C28000, C37000, C44300, C71500, C44400, C63020, C68700, C70400, C44500, C60800, C70600, C70620, C71000, C71520, C71640, etc
Copper Nickel Flat Washers ASTM / ASME SB 151, Copper Nickel 90/10 (C70600 ), Cupro Nickel 70/30 (C71500), UNS C71640
Inconel Flat Washers ASTM B166 / ASME SB 166, Inconel Alloy 600 (UNS No. N06600), 601, 625 (UNS No. N06625), 718, 783, 690, x750 Flat Washers
Hastelloy Flat Washers ASTM B564 / ASME SB564, Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X Flat Washers
Incoloy Flat Washers ASTM B564 / ASME SB564, Incoloy 800, 800H, 800HT (UNS N08800), 825 (UNS N08825), 925 Flat Washers, ASTM A453 Grade 660, ASTM A638 grade 660 Type 1, ASTM A286 Grade 660
Monel Flat Washers ASTM B564 / ASME SB564, Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500)
Nickel Flat Washers ASTM B564 / ASME SB564, Nickel 200, Nickel 201, Nickel 205, Nickel 205LC
Alloy 20 Flat Washers ASTM B462 / ASME SB462, Carpenter® 20 Alloy, Alloy 20Cb-3
Duplex Steel Flat Washers Duplex 2205, UNS S31803 / S32205 A479 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61 Flat Washers
Super Duplex Flat Washers Super Duplex 2507, UNS S32750 / S32760 A479 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61 Flat Washers
254 Smo Flat Washers ASTM A479 / ASME SA479, SMO 254/6Mo, UNS S31254, DIN 1.4547
Nimonic Flat Washers Nimonic 75, Nimonic 80A, Nimonic 90
Phosphor bronze Flat Washers PB102 (CW451K / C51000), PB104 (CW453K / C52400), PB1 (CC481K / C91700), LG1 (CC490K / C84400), LG2 (CC491K / C83600), LB4 (CC494K / C93500), SAE 660 (CC497K / C93200)
Alumunum bronze Flat Washers CA104 (CW307G / BSB23 / DTD197A), DEF STAN 02-833 (NES 833  / DGS 1043), DEF STAN 02-834 (NES 834 / DGS 1044/ CW301G), C63000 (AMS4640 / CW307G), C63200 (ASTM B150), AB2 (CC333G)
Other Flat Washers material Tin bronze, Lead bronze, Stellite, Molybdenum, Tantalum, Zirconium, Austenitic Steel, Chromium Vanadium Steel, Super Austenitic Steel, Weathering Steel Flat Washers
Stainless Steel 304 Flat Washers Coating and Surface Treatment
  • Xylon Coated
  • Polish
  • Teflon Coated
  • Passivation
  • Zinc Coated
  • Black Oxide
  • Anodizing
  • Phosphate Coated
  • Hot Dipped Galvanized
  • Dacroment, Geometry, plated zinc-nickel, anodizing, nickel plated
  • Stainless steel Flat Washers: Passivated Self-Colour, Bright Zinc Plated (BZP)
  • Heat-disposing
  • Hot-dip galvanizing
  • Black oxide coating
  • Sand blasting
  • Ptfe Coated (Teflon)
  • Cadmium Coated
  • Rust preventive oil
  • Zinc white, (yellow, black, blue), black oxide,
  • Hot Dip Galvanised (HDG), Sherardized, DACROMET and Mechanically Applied coating
  • Electroplating (color, blue, white, black zinc, Ni, Cr, tin, copper, silver)
   
AISI 410 Stainless Steel Flat Washers Dimensions

Flat Washers Dimensions

Thread Size d1 d2 h d3
Clearance Hole Diameter Outside Diameter Thickness
Min. Max. Max. Min. Max. Min. Max. Min.
M1.61.71.8443.70.350.2521.8
M1.71.81.944.54.20.350.252.11.9
M22.22.3454.70.350.252.62.4
M2.32.52.6465.70.550.452.92.7
M2.52.72.8465.70.550.453.12.9
M2.62.82.9476.640.550.453.23
M33.23.3876.640.550.453.63.4
M3.53.73.8887.640.550.454.13.9
M44.34.4898.640.90.74.74.5
M55.35.48109.641.10.95.75.5
M66.46.621211.571.81.46.86.6
M77.47.621413.571.81.47.87.6
M88.48.621615.571.81.49.29
M1010.510.772019.482.21.811.211
M121313.272423.482.72.313.713.5
M141515.272827.482.72.315.715.5
M161717.273029.483.32.717.717.5
M181919.333433.383.32.720.220
M202121.333736.383.32.722.422
M222323.333938.383.32.724.424
M242525.334443.384.33.726.426
M262727.335049.384.33.728.428
M272828.335049.384.33.730.430
M282929.335049.384.33.731.431

Thread Size d1 d2 h  
Clearance Hole Diameter Outside Diameter Thickness
Min. Max. Max. Min. Max. Min. Max. Min.
M303131.395655.264.33.733.433
M323333.626058.85.64.435.435
M333434.626058.85.64.436.436
M353636.626664.85.64.438.438
M363737.626664.85.64.439.439
M383939.627270.86.65.441.441
M394040.627270.86.65.442.442
M404141.627270.86.65.443.643
M424343.627876.88645.645
M454646.628583.68648.648
M485050.629290.69752.652
M505252.749290.69754.654
M525454.749896.69756.656
M555757.74105103.61086059
M565858.74105103.61086362
M586060.74110108.61086564
M606262.74110108.61086766
M646666.74115113.61087170
M687070.74120118.61197574
M727474.74125123.41197978
M767878.74135133.41198382
M808282.87140138.413.210.88786
M858787.87145143.413.210.89291
M909393.87160158.413.210.89796
M959898.87165163.413.210.8102101
M100104104.87175173.415.212.8108107
M105109109.87180178.415.212.8113112
M110114114.87185183.1515.212.8118117
M115119119.87200188.1515.212.8123122
M120124125210208.1517.214.8128127
M125129130220218.1517.214.8133132
M130134135220218.1517.214.8138137
M135139140230228.1517.214.8143142
M140144145240238.1519.216.8148147
M145149150250248.1519.216.8153152
M150155156250248.1519.216.8159158
M160165166250248.1519.216.8169168
12.9 grade Flat Washers Sizes

SAE Grade 2 Washer sizes

Bolt Size Outside Diameter Inside Diameter Thickness Approx Lbs per M Pcs Approx Pcs per Carton
#6.375.156.036/.0651.2639,500
#8.438.188.036/.0651.729,500
#10.500.219.036/.0652.222,750
#12.563.250.051/.0803.414,700
1/4.625.281.051/.0804.511,100
5/16.688.344.051/.0805.19,750
3/8.813.406.051/.0807.17,000
7/16.922.469.051/.0809.15,500
1/21.063.531.074/.12117.82,800
9/161.156.594.074/.12122.22,250
5/81.313.656.074/.12127.11,850
3/41.469.813.108/.16044.71,050
7/81.750.938.108/.16064.6775
12.0001.063.108/.16085585
1-1/82.2501.250.108/.160109460
1-1/42.5001.375.136/.192151335
1-3/82.7501.500.136/.192181275
1-1/23.0001.625.136/.192212230

USS Grade 2 Washer sizes

Bolt Size Outside Diameter Inside Diameter Thickness Approx Lbs per M Pcs Approx Pcs per Carton
3/16.563.250.036/.0652.818,050
1/4.734.313.051/.0806.77,450
5/16.875.375.064/.10411.54,350
3/81.000.438.064/.10414.93,350
7/161.250.500.064/.10422
1/21.375.563.086/.13238.51,300
9/161.469.625.086/.13245.51,100
5/81.750.688.108/.16077650
3/42.000.813.122/.177110455
7/82.250.938.136/.192154325
12.5001.063.136/.192188265
1-1/82.7501.250.136/.192222225
1-1/43.0001.375.136/.192263190
1-3/83.2501.500.153/.213333150
1-1/23.5001.625.153/.213385130
1-5/83.7501.750.153/.213435115
1-3/44.0001.875.153/.213500100
1-7/84.2502.153/.21355590
24.5002.125.153/.21363379
2-1/44.7502.375.193/.24883360
2-1/25.0002.625.210/.28096152
2-3/45.2502.875.228/.310111145
35.5003.125.249/.327128139
Uses and application of SA 193 Gr B7 Flat Washers

Some applications need a softer washer. Materials such as Nylon, polyethylene, PTFE, ceramics, rubber, felt, and leather, are used as raw materials Washers for applications like these. The most common grade of Stainless Steel Flat Washer is A4, which is synonymous with alloy 316 or marine grade stainless steel. Grade A4 is known for its increased resistance to chloride corrosion in comparison to alloy 304. Stainless steel grade 316 exhibits properties that are much higher than alloy 304, especially with regards to pitting, strength, toughness, and use at elevated temperatures.

  • Oil & Gas Industries
  • Petroleum Industries
  • Nuclear Energy Sector
  • Chemical Industry
  • Aerospace Industry
  • Defence Industry
ASTM A320 L7 Flat Washers Weight Chart

SAE Flat Washer weigth chart

Bolt Size Inner Diameter (ID) Outer Diameter (OD) Thickness (Th) Approx LBs per 1000 Approx Pcs per 50 lb Carton Approx Pcs per LB
#65/323/8.036/.0651.2639,500790
#83/167/16.036/.0651.729,500585
#107/321/2.036/.0652.322,750435
#121/49/16.051/.0803.414,700280
1/49/325/8.051/.0804.511,100222
5/1611/3211/16.051/.0805.29,750192
3/813/3213/16.051/.0807.27,000140
7/1615/3259/64.051/.0809.55,500105
1/217/321 1/16.074/.12118.32,80055
9/1619/321 5/32.074/.12123.42,25043
5/821/321 5/16.074/.12127.71,85036
3/413/161 15/32.108/.16047.41,05021
7/815/161 3/4.108/.1606377516
11 1/162.108/.1608358512
1 1/81 1/42 1/4.108/.1601094609.2
1 1/41 3/82 1/2.136/.1921603356.3
1 3/81 1/22 3/4.136/.2131902755.25
1 1/21 5/83.153/.2132402304.25

Weight of 5/16" Thick Hardened Structural Washers

Bolt Size Outside Diameter Inside Diameter Thickness Approx Lbs per M Pcs Approx Pcs per Carton
1 2.000 1.063 .312 196 250
1-1/8 2.250 1.188 .312 252 200
1-1/4 2.500 1.375 .312 303 175
1-1/2 3.000 1.625 .312 442 80

Beveled Structural Washers Weight Chart

Bolt Size Outside Diameter Slope Approx. Lbs per M Pcs Approx Pcs per Carton
1/2 1.750 16-2/3% 251 200
5/8 1.750 16-2/3% 237 250
3/4 1.750 16-2/3% 224 250
7/8 1.750 16-2/3% 209 250
1 1.750 16-2/3% 181 250
A193 Grade B8 Class 2 Flat Washers Testing Equipment

Flat Washers Measuring Instruments and Equipment

  • Micrometer
  • Thread gauge
  • Smooth plug gauge
  • Roughness tester
  • Image measuring instrument
  • Coordinate Measuring Machine
  • Routine inspection of calipers