17-7PH Stainless Steel Belleville Washers
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17-7PH Stainless Steel Belleville Washers

Belleville washers are unique, conical shaped washers recommended for use in problematic or critical bolting applications. Their conical shape affords a high spring rate over a short deflection to retain the proper bolting stress in a variety of conditions. The loss of a sound bolted connection can lead to fugitive emissions, cause equipment failure, or catastrophic events. Belleville washers can eliminate bolted joint failures due to a variety of causes:

  • High-temperature bolt yield
  • Differential thermal expansion
  • Packing or gasket relaxation or creep
  • Vibration
  • Thermal cycling
  • High cycle applications

17-7PH stainless steel is semi-austenitic and precipitation hardened. It exhibits high strength and hardness, corrosion resistance, and excellent fatigue properties, and is suitable for cryogenic service. 17-7PH Belleville Washers are commonly used on stainless steel grades of bolting including ASTM A193 and A320 Grade B8 and B8M, classes 1 and 2 (strain hardened).

Mechanical Properties17-7 PH Stainless Steel

Material Tensile
Strength
Yield
Strength
Modulus of
Elasticity
Poisson's
Ratio
Elongation
at Break
Hardness
17-7 PH
Stainless Steel
Rockwell C
Imperial 170000 psi 140000 psi 29600 ksi 0.27 - 0.30 6% 38
Metric 1170 MPa 965 MPa 204 GPa 0.27 - 0.30 6% 38

Chemical Properties17-7 PH Stainless Steel

Material % Chromium % Nickel % Manganese % Silicon % Aluminum % Carbon % Phosphorus % Sulfur % Iron
17-7 PH
Stainless Steel
16 -18 6.50 - 7.75 1 max 1 max 0.75 - 1.50 0.09 max 0.040 max 0.030 max Balance

Dimensional Specifications17-7 PH Stainless Steel Belleville Washer

17-7 PH Stainless Steel Belleville Washer dimensions
STS Part Number Diameter Belleville
Type
Raw Material ID OD T H h Load
Rating
Load
Rating
lbs or N
Thickness Height Deflection
WBEL006L21177 #6 Light 17-7 PH Stainless Steel 0.1420 0.2810 0.0200 0.0320 0.0050 150 lbs
WBEL006M26177 #6 Medium 17-7 PH Stainless Steel 0.1420 0.3440 0.0250 0.0420 0.0070 240 lbs
WBEL006H31177 #6 Heavy 17-7 PH Stainless Steel 0.1420 0.4060 0.0310 0.0520 0.0090 350 lbs
WBEL008L26177 #8 Light 17-7 PH Stainless Steel 0.1680 0.3440 0.0250 0.0400 0.0070 240 lbs
WBEL008M31177 #8 Medium 17-7 PH Stainless Steel 0.1680 0.4060 0.0310 0.0500 0.0080 370 lbs
WBEL010M25177 #10 Medium 17-7 PH Stainless Steel 0.1960 0.4720 0.0250 0.0410 0.0120 200 lbs
WBEL010L31177 #10 Light 17-7 PH Stainless Steel 0.1960 0.4060 0.0310 0.0480 0.0070 375 lbs
WBEL010M35177 #10 Medium 17-7 PH Stainless Steel 0.1960 0.4690 0.0350 0.0570 0.0090 470 lbs
WBEL010H42177 #10 Heavy 17-7 PH Stainless Steel 0.1960 0.5630 0.0420 0.0710 0.0120 650 lbs
WBEL010M50177 #10 Medium 17-7 PH Stainless Steel 0.1960 0.4690 0.0500 0.0670 0.0070 1000 lbs
WBEL025L42177 1/4 Light 17-7 PH Stainless Steel 0.2580 0.5630 0.0420 0.0670 0.0100 680 lbs
WBEL025M52177 1/4 Medium 17-7 PH Stainless Steel 0.2580 0.6880 0.0500 0.0860 0.0140 1000 lbs
WBEL025H61177 1/4 Heavy 17-7 PH Stainless Steel 0.2580 0.8130 0.0620 0.0800 0.0180 1300 lbs
WBEL031L52177 5/16 Light 17-7 PH Stainless Steel 0.3220 0.6880 0.0500 0.0820 0.0120 1000 lbs
WBEL031M61177 5/16 Medium 17-7 PH Stainless Steel 0.3220 0.8130 0.0620 0.0780 0.0160 1450 lbs
WBEL031EH80177 5/16 Extra Heavy 17-7 PH Stainless Steel 0.3220 1.0630 0.0830 0.1060 0.0240 2350 lbs
WBEL037L61177 3/8 Light 17-7 PH Stainless Steel 0.3860 0.8130 0.0620 0.0760 0.0140 1500 lbs
WBEL037M70177 3/8 Medium 17-7 PH Stainless Steel 0.3860 0.9380 0.0720 0.0900 0.0180 2000 lbs
WBEL037H80177 3/8 Heavy 17-7 PH Stainless Steel 0.3860 1.0630 0.0830 0.1050 0.0220 2600 lbs
WBEL037F80177 3/8 Flange 17-7 PH Stainless Steel 0.3860 0.7140 0.0830 0.0910 0.0080 2800 lbs
WBEL037EH89177 3/8 Extra Heavy 17-7 PH Stainless Steel 0.3860 1.1880 0.0950 0.1220 0.0270 3300 lbs
WBEL043F80177 7/16 Flange 17-7 PH Stainless Steel 0.4500 0.8200 0.0830 0.0930 0.0100 2800 lbs
WBEL043H89177 7/16 Heavy 17-7 PH Stainless Steel 0.4500 1.1880 0.0950 0.1180 0.0230 3400 lbs
WBEL050L80177 1/2 Light 17-7 PH Stainless Steel 0.5150 1.0630 0.0830 0.1010 0.0180 2700 lbs
WBEL050F80177 1/2 Flange 17-7 PH Stainless Steel 0.5120 0.9000 0.0830 0.0940 0.0110 2775 lbs
WBEL050H98177 1/2 Heavy 17-7 PH Stainless Steel 0.5150 1.3130 0.0950 0.1220 0.0270 3400 lbs
WBEL050M89177 1/2 Medium 17-7 PH Stainless Steel 0.5150 1.1880 0.0950 0.1160 0.0210 3500 lbs
WBEL050F89177 1/2 Flange 17-7 PH Stainless Steel 0.5150 0.9000 0.0950 0.1050 0.0100 3700 lbs
WBEL050EH112177 1/2 Extra Heavy 17-7 PH Stainless Steel 0.5150 1.5000 0.1170 0.1480 0.0310 5000 lbs
WBEL050L112177 1/2 Light 17-7 PH Stainless Steel 0.5150 1.0630 0.1170 0.1300 0.0130 5600 lbs
WBEL062L98177 5/8 Light 17-7 PH Stainless Steel 0.6440 1.3130 0.0950 0.1180 0.0230 3500 lbs
WBEL062F95177 5/8 Flange 17-7 PH Stainless Steel 0.6440 1.1400 0.0950 0.1100 0.0150 3585 lbs
WBEL062M122177 5/8 Medium 17-7 PH Stainless Steel 0.6440 1.5000 0.1170 0.1450 0.0280 5300 lbs
WBEL062F125177 5/8 Flange 17-7 PH Stainless Steel 0.6400 1.1480 0.1250 0.1370 0.0120 6400 lbs
WBEL062F112177 5/8 Flange 17-7 PH Stainless Steel 0.6440 1.1480 0.1170 0.1300 0.0130 6500 lbs
WBEL062H131177 5/8 Heavy 17-7 PH Stainless Steel 0.6440 1.7500 0.1360 0.1730 0.0370 7000 lbs
WBEL075L112177 3/4 Light 17-7 PH Stainless Steel 0.7730 1.5000 0.1170 0.1410 0.0240 5400 lbs
WBEL075F112177 3/4 Flange 17-7 PH Stainless Steel 0.7730 1.3700 0.1170 0.1350 0.0180 5500 lbs
WBEL075M131177 3/4 Medium 17-7 PH Stainless Steel 0.7730 1.7500 0.1360 0.1680 0.0320 7200 lbs
WBEL075F131177 3/4 Flange 17-7 PH Stainless Steel 0.7730 1.3700 0.1360 0.1520 0.0160 8500 lbs
WBEL075H150177 3/4 Heavy 17-7 PH Stainless Steel 0.7730 2.0000 0.1550 0.1950 0.0400 9100 lbs
WBEL075M150177 3/4 Medium 17-7 PH Stainless Steel 0.7730 1.6300 0.1550 0.1790 0.0240 9400 lbs
WBEL075EH168177 3/4 Extra Heavy 17-7 PH Stainless Steel 0.7730 2.2500 0.1930 0.2360 0.0440 13800 lbs
WBEL087L131177 7/8 Light 17-7 PH Stainless Steel 0.9010 1.7500 0.1360 0.1640 0.0310 7200 lbs
WBEL087F150177 7/8 Flange 17-7 PH Stainless Steel 0.9010 1.5900 0.1550 0.1740 0.0190 12500 lbs
WBEL100F160177 1 Flange 17-7 PH Stainless Steel 1.0320 1.8050 0.1680 0.1950 0.0230 8600 lbs
WBEL100L150177 1 Light 17-7 PH Stainless Steel 1.0300 2.0000 0.1550 0.1870 0.0320 9400 lbs
WBEL100H187177 1 Heavy 17-7 PH Stainless Steel 1.0300 2.5000 0.1930 0.2400 0.0480 14200 lbs
WBEL100M168177 1 Medium 17-7 PH Stainless Steel 1.0300 2.2500 0.1930 0.2290 0.0370 14600 lbs
WBEL100F168177 1 Flange 17-7 PH Stainless Steel 1.0300 1.8100 0.1930 0.2100 0.0170 18000 lbs
WBEL112M187177 1 1/8 Medium 17-7 PH Stainless Steel 1.1550 2.5000 0.1930 0.2340 0.0420 14400 lbs
WBEL112L168177 1 1/8 Light 17-7 PH Stainless Steel 1.1550 2.2500 0.1930 0.2250 0.0330 14700 lbs
WBEL112F187177 1 1/8 Flange 17-7 PH Stainless Steel 1.1550 2.0250 0.1930 0.2180 0.0250 20000 lbs
WBEL125L187177 1 1/4 Light 17-7 PH Stainless Steel 1.2800 2.5000 0.1930 0.2300 0.0400 14400 lbs
WBEL125F206177 1 1/4 Flange 17-7 PH Stainless Steel 1.2810 2.3100 0.1930 0.2240 0.0310 20000 lbs
WBEL137L206177 1 3/8 Light 17-7 PH Stainless Steel 1.4050 2.7500 0.1930 0.2400 0.0480 14200 lbs
WBEL137F225177 1 3/8 Flange 17-7 PH Stainless Steel 1.4060 2.4700 0.2500 0.2840 0.0280 25000 lbs
WBEL150F244177 1 1/2 Flange 17-7 PH Stainless Steel 1.5310 2.6800 0.2500 0.2840 0.0340 26000 lbs
WBEL162F262177 1 5/8 Flange 17-7 PH Stainless Steel 1.6490 2.9500 0.2620 0.2990 0.0370 27000 lbs
WBEL175F281177 1 3/4 Flange 17-7 PH Stainless Steel 1.7740 3.1700 0.2800 0.3230 0.0430 31000 lbs
WBEL187F300177 1 7/8 Flange 17-7 PH Stainless Steel 1.9100 3.3890 0.3000 0.3450 0.0450 33000 lbs
WBEL225F356177 2 1/4 Flange 17-7 PH Stainless Steel 2.2810 4.0400 0.3560 0.4080 0.0520 51000 lbs
WBELM04-8-.40-177 M4 Standard 17-7 PH Stainless Steel 4.1910 mm 8.0010 mm 0.3810 mm 0.7874 mm 0.1778 mm 356 N
WBELM12-F-2.3-177 M12 Flange 17-7 PH Stainless Steel 12.3952 mm 21.6916 mm 2.4130 mm 2.6670 mm 0.2540 mm 16458 N
WBELM16-39-3.9-177 M16 Standard 17-7 PH Stainless Steel 16.3576 mm 38.9890 mm 3.9370 mm 4.5212 mm 0.5842 mm 43146 N
WBELM30-F-5-177 M30 Flange 17-7 PH Stainless Steel 30.8102 mm 53.9242 mm 4.9022 mm 5.5626 mm 0.6604 mm 66720 N
WBELM36-F-5-177 M36 Flange 17-7 PH Stainless Steel 36.8046 mm 65.5320 mm 4.9022 mm 5.8674 mm 0.9652 mm 64941 N
Narrow Results

Inch or Metric

17-7PH Stainless Steel Belleville Washers
View
Diameter Belleville Type Outside Diameter Thickness Height Load Rating Item # Availability Price Quantity UOM
#6 Light 0.2810 0.02 0.0320 150 WBEL006L21177 5-7 Working Days $0.18/EA EA
#6 Medium 0.3440 0.0250 0.0420 240 WBEL006M26177 5-7 Working Days $0.135/EA EA
#6 Heavy 0.4060 0.0310 0.0520 350 WBEL006H31177 5-7 Working Days $0.144/EA EA
#8 Light 0.3440 0.0250 0.04 240 WBEL008L26177 5-7 Working Days $0.162/EA EA
#8 Medium 0.4060 0.0310 0.05 370 WBEL008M31177 5-7 Working Days $0.144/EA EA
#10 Medium 0.4720 0.0250 0.0410 200 WBEL010M25177 5-7 Working Days $0.18/EA EA
#10 Light 0.4060 0.0310 0.0480 375 WBEL010L31177 5-7 Working Days $0.144/EA EA
#10 Medium 0.4690 0.0350 0.0570 470 WBEL010M35177 5-7 Working Days $0.144/EA EA
#10 Heavy 0.5630 0.0420 0.0710 650 WBEL010H42177 5-7 Working Days $0.198/EA EA
#10 Medium 0.4690 0.05 0.0670 1000 WBEL010M50177 5-7 Working Days $0.18/EA EA
1/4 Light 0.5630 0.0420 0.0670 680 WBEL025L42177 5-7 Working Days $0.54/EA EA
1/4 Medium 0.6880 0.05 0.0860 1000 WBEL025M52177 5-7 Working Days $0.36/EA EA
1/4 Heavy 0.8130 0.0620 0.08 1300 WBEL025H61177 5-7 Working Days $0.504/EA EA
5/16 Light 0.6880 0.05 0.0820 1000 WBEL031L52177 5-7 Working Days $0.576/EA EA
5/16 Medium 0.8130 0.0620 0.0780 1450 WBEL031M61177 5-7 Working Days $0.576/EA EA
5/16 Extra Heavy 1.0630 0.0830 0.1060 2350 WBEL031EH80177 5-7 Working Days $0.936/EA EA
3/8 Light 0.8130 0.0620 0.0760 1500 WBEL037L61177 5-7 Working Days $0.576/EA EA
3/8 Medium 0.9380 0.0720 0.09 2000 WBEL037M70177 5-7 Working Days $1.026/EA EA
3/8 Heavy 1.0630 0.0830 0.1050 2600 WBEL037H80177 5-7 Working Days $1.314/EA EA
3/8 Flange 0.7140 0.0830 0.0910 2800 WBEL037F80177 5-7 Working Days $0.792/EA EA
3/8 Extra Heavy 1.1880 0.0950 0.1220 3300 WBEL037EH89177 5-7 Working Days $1.53/EA EA
7/16 Flange 0.82 0.0830 0.0930 2800 WBEL043F80177 5-7 Working Days $0.936/EA EA
7/16 Heavy 1.1880 0.0950 0.1180 3400 WBEL043H89177 5-7 Working Days $1.458/EA EA
1/2 Light 1.0630 0.0830 0.1010 2700 WBEL050L80177 5-7 Working Days $0.936/EA EA
1/2 Flange 0.9 0.0830 0.0940 2775 WBEL050F80177 5-7 Working Days $0.936/EA EA
1/2 Heavy 1.3130 0.0950 0.1220 3400 WBEL050H98177 5-7 Working Days $1.674/EA EA
1/2 Medium 1.1880 0.0950 0.1160 3500 WBEL050M89177 5-7 Working Days $1.458/EA EA
1/2 Flange 0.9 0.0950 0.1050 3700 WBEL050F89177 5-7 Working Days $1.152/EA EA
1/2 Extra Heavy 1.5 0.1170 0.1480 5000 WBEL050EH112177 5-7 Working Days $2.682/EA EA
1/2 Light 1.0630 0.1170 0.13 5600 WBEL050L112177 5-7 Working Days $1.8/EA EA
5/8 Light 1.3130 0.0950 0.1180 3500 WBEL062L98177 5-7 Working Days $1.674/EA EA
5/8 Flange 1.14 0.0950 0.11 3585 WBEL062F95177 In Stock $1.764/EA EA
5/8 Medium 1.5 0.1170 0.1450 5300 WBEL062M122177 5-7 Working Days $2.304/EA EA
5/8 Flange 1.1480 0.1250 0.1370 6400 WBEL062F125177 5-7 Working Days $2.088/EA EA
5/8 Flange 1.1480 0.1170 0.13 6500 WBEL062F112177 5-7 Working Days $1.224/EA EA
5/8 Heavy 1.75 0.1360 0.1730 7000 WBEL062H131177 5-7 Working Days $3.852/EA EA
3/4 Light 1.5 0.1170 0.1410 5400 WBEL075L112177 5-7 Working Days $2.862/EA EA
3/4 Flange 1.37 0.1170 0.1350 5500 WBEL075F112177 5-7 Working Days $2.52/EA EA
3/4 Medium 1.75 0.1360 0.1680 7200 WBEL075M131177 5-7 Working Days $3.276/EA EA
3/4 Flange 1.37 0.1360 0.1520 8500 WBEL075F131177 5-7 Working Days $2.718/EA EA
3/4 Heavy 2.0 0.1550 0.1950 9100 WBEL075H150177 5-7 Working Days $6.732/EA EA
3/4 Medium 1.63 0.1550 0.1790 9400 WBEL075M150177 5-7 Working Days $3.744/EA EA
3/4 Extra Heavy 2.25 0.1930 0.2360 13800 WBEL075EH168177 5-7 Working Days $9.18/EA EA
7/8 Light 1.75 0.1360 0.1640 7200 WBEL087L131177 5-7 Working Days $3.996/EA EA
7/8 Flange 1.59 0.1550 0.1740 12500 WBEL087F150177 In Stock $3.816/EA EA
1 Flange 1.8050 0.1680 0.1950 8600 WBEL100F160177 In Stock $7.416/EA EA
1 Light 2.0 0.1550 0.1870 9400 WBEL100L150177 5-7 Working Days $6.732/EA EA
1 Heavy 2.5 0.1930 0.24 14200 WBEL100H187177 5-7 Working Days $11.232/EA EA
1 Medium 2.25 0.1930 0.2290 14600 WBEL100M168177 5-7 Working Days $10.008/EA EA
1 Flange 1.81 0.1930 0.21 18000 WBEL100F168177 5-7 Working Days $7.524/EA EA
1 1/8 Medium 2.5 0.1930 0.2340 14400 WBEL112M187177 5-7 Working Days $11.07/EA EA
1 1/8 Light 2.25 0.1930 0.2250 14700 WBEL112L168177 5-7 Working Days $9.09/EA EA
1 1/8 Flange 2.0250 0.1930 0.2180 20000 WBEL112F187177 5-7 Working Days $8.424/EA EA
1 1/4 Light 2.5 0.1930 0.23 14400 WBEL125L187177 5-7 Working Days $11.07/EA EA
1 1/4 Flange 2.31 0.1930 0.2240 20000 WBEL125F206177 5-7 Working Days $9.054/EA EA
1 3/8 Light 2.75 0.1930 0.24 14200 WBEL137L206177 5-7 Working Days $8.028/EA EA
1 3/8 Flange 2.47 0.25 0.2840 25000 WBEL137F225177 In Stock $47.646/EA EA
1 1/2 Flange 2.68 0.25 0.2840 26000 WBEL150F244177 5-7 Working Days $42.336/EA EA
1 5/8 Flange 2.95 0.2620 0.2990 27000 WBEL162F262177 In Stock $69.21/EA EA
1 3/4 Flange 3.17 0.28 0.3230 31000 WBEL175F281177 5-7 Working Days $88.722/EA EA
1 7/8 Flange 3.3890 0.3 0.3450 33000 WBEL187F300177 In Stock $124.2/EA EA
2 1/4 Flange 4.04 0.3560 0.4080 51000 WBEL225F356177 In Stock $138.042/EA EA
M4 Standard 8.0010 mm 0.3810 mm 0.7874 mm 356 N WBELM04-8-.40-177 5-7 Working Days $0.1206/EA EA
M12 Flange 21.6916 mm 2.4130 mm 2.6670 mm 16458 N WBELM12-F-2.3-177 5-7 Working Days $1.116/EA EA
M16 Standard 38.9890 mm 3.9370 mm 4.5212 mm 43146 N WBELM16-39-3.9-177 5-7 Working Days $2.358/EA EA
M30 Flange 53.9242 mm 4.9022 mm 5.5626 mm 66720 N WBELM30-F-5-177 5-7 Working Days $9.27/EA EA
M36 Flange 65.5320 mm 4.9022 mm 5.8674 mm 64941 N WBELM36-F-5-177 5-7 Working Days $11.268/EA EA