What material grade does Curved Spring Washers use?

Curved Spring Washers are manufactured per the applicable ASTM, ASME, DIN, or ISO specification for the material grade. TorqBolt provides material test certificates (MTC) per EN 10204 3.1 or 3.2 with every supply.

What sizes are available for Curved Spring Washers?

TorqBolt manufactures Curved Spring Washers in metric sizes M6 to M100 and imperial sizes 1/4" to 4" diameter, with custom lengths from 10mm to 3000mm. Non-standard sizes are available on request.

Are Curved Spring Washers NACE MR0175 / ISO 15156 certified?

Yes, Curved Spring Washers can be supplied with NACE MR0175 / ISO 15156-2/3 sour service certification when specified at order. Material certificates and test reports are provided.

What is the typical delivery time for Curved Spring Washers?

Standard stock items ship in 1-2 weeks. Custom manufactured Curved Spring Washers typically ship in 4-6 weeks depending on quantity, material availability, and certification requirements.

Do you provide third-party inspection for Curved Spring Washers?

Yes, third-party inspection by TUV, Lloyd's Register, BV, DNV, SGS, and Intertek is available upon request for Curved Spring Washers. Witness testing and stage inspections can be arranged.

Curved Spring Washers Manufacturer & Supplier

Curved Spring Washers

Two types of curved spring washers come as cylindrically curved spring washer and Spherically curved spring washer. The cylindrically curved washer is well suited for applications requiring flexibility and light loads and repeated cycles through a range of motion. Of the cylindrically curved, wave and Belleville types, the cylindrically curved washer exhibits the most uniform spring constant over the widest range of deflection. And Spherically curved washers are frequently made as segments of spheres instead of segments of cylinders. Although they are not true conical washers, the have approximately the same spring characteristics. However, the load capacity of spherically curved washers varies considerably when deflected near the flat position. The spherical shape tends to add a stiffening effect so that, in general, spherically curved spring washers will have slightly higher spring rates than comparable conical washers.

TorqBolt manufactures Curved Spring Washers via cold forging, hot forging and CNC machining. Sizes range from M1.0 to M100 (metric) and 1/16" to 4" (imperial). Available in coarse, fine, UNC, UNF, UN, BSW and acme threads with half, full or double-end thread configurations. Each Curved Spring Washers batch is supplied with EN 10204 3.1 or 3.2 material test certificates.

Hexagon Bolts

ANSI B18.2.1
ANSI B18.2.3.1M
DIN 931
DIN 933
BS 1768
UNI 5731
UNI 5737
UNI 5739
ISO 4014
ISO 4017
BS 1769
BS 3692

Socket/Slotted Set Screws

DIN 913
DIN 914
DIN 915
DIN 916
DIN 551
DIN 553
DIN 438
BS 4168

Socket/Slotted Countersunk Screws

DIN 963
DIN 7991
BS 4168
BS 1981
BS 483
BS 2470

Socket Cap Screws

ANSI B18.3
B18.3.1M
DIN 912
DIN 6912
DIN 7984
ANSI B18.3
ISO 4762
UNI 5931
BS 2470
BS 4168

Stud Bolts

ASME B18.2.1
DIN 976
DIN 938
DIN 939
DIN 2510
BS 4439
BS 2693
BS4882

Nuts

ANSI B18.2.2
ANSI B18.2.4.6M
DIN 934
DIN 936
BS 1768
BS 1769
BS 1083
BS 3692
ISO 4032
ISO 4033
ISO 4035
UNI 5587
UNI 5588
UNI 5589

Washers

ASME B18.22.1
ASTM F436
ISO 7089
DIN 125
DIN 9021
BS 4320
BS 3410
DIN 127
BS 4464
BS 1802
UNI 6952

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Please contact our Sales Team for more information on Curved Spring Washers