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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).

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Mechanical Properties
Chemical Properties
Dimensional Specifications

Dimensional Specifications

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
STS Part Number	Diameter	Belleville Type	Raw Material	ID	OD	Thickness	Height	Deflection	Load Rating	Load Rating lbs or N
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

17-7PH Stainless Steel Belleville Washers

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Diameter Belleville Type Outside Diameter Thickness Height Load Rating Item # Availability Price Quantity UOM

3/4

Light

1.5000

0.1170

0.1410

5400

WBEL075L112177

Out Of Stock

$3.91365/EA

See Quantity Discounts

3/4'' LIGHT BELLEVILLE WASHER 12L112177, 17-7PH SS

$3.91365/EA

Qty

Out Of Stock

Product Detail

Quantity	Price
Quantity	Price
1	$3.91365/ EA

3/4

Flange

1.3700

0.1170

0.1350

5500

WBEL075F112177

Out Of Stock

$4.85015/EA

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3/4'' BELLEVILLE FLANGE WASHER 12F112177, 17-7PH SS

$4.85015/EA

Qty

Out Of Stock

Product Detail

Quantity	Price
Quantity	Price
1	$4.85015/ EA

3/4

Medium

1.7500

0.1360

0.1680

7200

WBEL075M131177

In Stock

$6.37673/EA

See Quantity Discounts

3/4'' MED BELLEVILLE WASHER 12M131177, 17-7PH SS

$6.37673/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$6.37673/ EA

3/4

Flange

1.3700

0.1360

0.1520

8500

WBEL075F131177

In Stock

$3.68415/EA

See Quantity Discounts

3/4'' BELLEVILLE FLANGE WASHER 12F131177, 17-7PH SS

$3.68415/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$3.68415/ EA

3/4

Heavy

2.0000

0.1550

0.1950

9100

WBEL075H150177

Out Of Stock

$7.49871/EA

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3/4'' HVY BELLEVILLE WASHER 12H150177, 17-7PH SS

$7.49871/EA

Qty

Out Of Stock

Product Detail

Quantity	Price
Quantity	Price
1	$7.49871/ EA

3/4

Medium

1.6300

0.1550

0.1790

9400

WBEL075M150177

Out Of Stock

$4.32608/EA

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3/4'' MED BELLEVILLE WASHER 12M150177, 17-7PH SS

$4.32608/EA

Qty

Out Of Stock

Product Detail

Quantity	Price
Quantity	Price
1	$4.32608/ EA

3/4

Extra Heavy

2.2500

0.1930

0.2360

13800

WBEL075EH168177

Out Of Stock

$10.35005/EA

See Quantity Discounts

3/4'' XHVY BELLEVILLE WASHER 12EH168177, 17-7PH SS

$10.35005/EA

Qty

Out Of Stock

Product Detail

Quantity	Price
Quantity	Price
1	$10.35005/ EA

Material	Tensile Strength	Yield Strength	Modulus of Elasticity	Poisson's Ratio	Elongation at Break	Hardness
17-7 PH Stainless Steel	Tensile Strength	Yield Strength	Modulus of Elasticity	Poisson's Ratio	Elongation at Break	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

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

17-7PH Stainless Steel Belleville Washers

Technical Data

Mechanical Properties

Mechanical Properties17-7 PH Stainless Steel

Chemical Properties

Chemical Properties17-7 PH Stainless Steel

Dimensional Specifications

Dimensional Specifications17-7 PH Stainless Steel Belleville Washer

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3/4'' LIGHT BELLEVILLE WASHER 12L112177, 17-7PH SS

3/4'' BELLEVILLE FLANGE WASHER 12F112177, 17-7PH SS

3/4'' MED BELLEVILLE WASHER 12M131177, 17-7PH SS

3/4'' BELLEVILLE FLANGE WASHER 12F131177, 17-7PH SS

3/4'' HVY BELLEVILLE WASHER 12H150177, 17-7PH SS

3/4'' MED BELLEVILLE WASHER 12M150177, 17-7PH SS

3/4'' XHVY BELLEVILLE WASHER 12EH168177, 17-7PH SS