
Round Small Flat Metal Washers M2-M56 With Carbon Steel Material High Strength
Product Description
The flat pad, which is mainly punched out with an iron plate, is generally a flat washer with a hole in the middle. This hole size specification is generally based on customer requirements.
Flat washers are usually thin pieces of various shapes to reduce
friction, prevent leaks, isolate, prevent loosening, or distribute
pressure. This material is used in many materials and structures to
perform a variety of similar functions. Due to the limitations of
the material and process of the threaded fasteners, the bearing
surfaces of the fasteners such as the bolts are not large, so that
the surface of the parts to be joined is protected to reduce the
compressive stress of the bearing surface, and washers are used. In
order to prevent loosening of the connection pair, loose-proof
spring washers and multi-tooth lock washers, round nut stop washers
and saddle-shaped, corrugated, conical elastic washers are used.
The Role of Flat Mat
1. Increase the contact area between the screw and the machine.
2. Eliminate damage to the surface of the machine when the spring
pad is unloaded. When used, it must be a spring pad and a flat pad.
The flat pad is facing the surface of the machine. The spring pad
is between the flat pad and the nut.
Flat pad standard
National standards are different.
Here is the United States flat pad standard:
Specification | Minor Diameter | Outside Diameter | Thickness Tolerance | Thickness Tolerance Disintegration |
USS 3/16 | 6.22~6.73 | 14.15~14.66 | 0.91~1.65 | 0.91~1.40 |
1.40~1.65 | ||||
USS 1/4 | 7.80~8.31 | 18.47~19.02 | 1.30~2.03 | 1.30~1.65 |
1.65~2.03 | ||||
USS 5/16 | 9.40~9.91 | 22.05~22.99 | 1.63~2.64 | 1.63~2.20 |
2.20~2.64 | ||||
USS 3/8 | 11.00~11.51 | 25.22~26.16 | 1.63~2.64 | 1.63~2.20 |
2.20~2.64 | ||||
USS 7/16 | 12.57~13.08 | 31.57~32.51 | 1.63~2.64 | 1.63~2.20 |
2.20~2.64 | ||||
USS 1/2 | 14.15~14.60 | 34.75~35.69 | 2.18~3.35 | 2.18~2.70 |
2.70~3.00 | ||||
3.00~3.35 | ||||
USS 9/16 | 15.75~16.26 | 37.13~38.07 | 2.18~3.35 | 2.18~2.70 |
2.70~3.00 | ||||
3.00~3.35 | ||||
USS 5/8 | 17.30~18.24 | 44.27~45.21 | 2.74~4.06 | 2.74~3.20 |
3.20~3.60 | ||||
3.60~4.06 | ||||
USS 3/4 | 20.45~21.39 | 50.62~51.56 | 3.10~4.50 | 3.10~3.60 |
3.60~4.20 | ||||
4.20~4.50 | ||||
USS 7/8 | 23.65~24.58 | 56.97~57.91 | 3.45~4.88 | 3.45~4.00 |
4.00~4.30 | ||||
4.30~4.88 | ||||
USS 1 | 26.80~27.74 | 63.32~64.26 | 3.45~4.88 | 3.45~4.00 |
4.00~4.30 | ||||
4.30~4.88 | ||||
USS 11/8 | 31.57~32.51 | 69.67~70.61 | 3.45~4.88 | 3.45~4.00 |
4.00~4.30 | ||||
4.30~4.88 | ||||
USS 11/4 | 34.75~35.69 | 76.02~76.96 | 3.45~4.88 | 3.45~4.00 |
4.00~4.30 | ||||
4.30~4.88 | ||||
USS 13/8 | 37.85~39.24 | 82.30~83.69 | 3.89~5.41 | 3.89~4.40 |
4.40~5.00 | ||||
5.00~5.41 | ||||
USS 11/2 | 41.02~42.42 | 88.65~90.04 | 3.89~5.41 | 3.89~4.40 |
4.40~5.00 | ||||
5.00~5.41 | ||||
USS 15/8 | 44.20~45.59 | 95.00~96.39 | 3.89~5.41 | 3.89~4.40 |
4.40~5.00 | ||||
5.00~5.41 | ||||
USS 13/4 | 47.37~48.77 | 101.35~102.74 | 3.89~5.41 | 3.89~4.40 |
4.40~5.00 | ||||
5.00~5.41 | ||||
USS 17/8 | 50.55~51.04 | 107.70~109.09 | 3.89~5.41 | 3.89~4.40 |
4.40~5.00 | ||||
5.00~5.41 | ||||
USS 2 | 53.72~55.12 | 114.05~115.44 | 3.89~5.41 | 3.89~4.40 |
4.40~5.00 | ||||
5.00~5.41 |
Handan city Yongnian District Maide Fasteners Co. Ltd
Handan city Yongnian District Maide Fasteners Co. Ltd
Handan Maide Fastener Co.Ltd has own factory and the factory has over 15years experience in fasteners products. Our factroy occupied5000 square meters,and located in the largest distribution center of fasteners--Yongnian district,North of Handan in Hebei.
We mainly produce DIN,GB,ISO,ASTM hex nuts ,hex bolts,flat washers and so on.Our company always adhere the business philosophy of the people as base,the market as core and keep learning the high -quality management experience from successful enterprise and introducing advanced technology at home and abroad.
In addition,Our company promise with our excellent reputation and good service attitude that we will provide high quality of products and good after-sales service to the domestic and overseas customers, warmly welcome new and existing clients to visit our company to negotiate.