H.J TECH INDUSTRY LIMITED
H.J TECH INDUSTRY LIMITED
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H.J Tech Industry is certificated according to the ISO 9001:2000 since 2005 and the Production Process Controls:
At the entrance;
During the production;
At the end of the process;
Also  many kinds of quality tests are supported.

Products
customer part > SAE Washer,USS Washer

Product name: SAE Washer
Item No.: HJ10002


Features


Description

Flat washers, also sometimes called plain washers, are used under bolt heads or nuts to increase the bearing area or offer greater hardness, so that the nut or bolt can be rotated without distortion of the bearing surface. Flat washers are also used to give tightness to a joint, to prevent leakage, and especially to distribute pressure under the head of a nut or bolt.

There are two common flat washer styles, based on the evolution of this part: USS (United States Standard) flat washers and SAE flat washers (originally approved by Society of Automotive Engineers). USS flat washers have a larger outer diameter than SAE flat washers. Differences between USS and SAE flat washers are reflected in each item's actual physical measurements; unless the buyer has a specific USS or SAE requirement, the buyer should consider the measurements, based on need, and not whether the flat washer is USS or SAE.

It is important to note that the nominal size of a washer does not match the actual size of its internal diameter. The internal diameter of a washer is larger than its nominal size so that when one matches a, for example, ¾-20 bolt with a ¾ washer, the ID of the ¾ will be large enough to accommodate the diameter of the bolt’s shaft. A ¾ flat washer is .812”, not .750”, as one would likely assume. This makes it easy to match bolts or screws with the appropriate size washer. When ordering a washer for a use other than matching it to a screw or a bolt, however, if the ID is important to the use to which the washer is to be put, one should determine the actual inner diameter of the washer before placing an order.

1.Specifications:flat washer
2.Material: Mild steel,Carbon steel,Q235,A2,A4,304,316,45#,50#.
3.Class:HV100;HV140;HV200;High Strength
4.Surface treatment: plain; black; zinc-plated (ZPCR3+; ZPCR6+; BZP; YZP);Hot-Dip Galvanized;powder-coated;
5.Size:From M1.6 to M95
6.Packing:25kgs/carton, 36cartons/pallet, or according to customer's requirement
7.Certificatiojn: ISO9001-2000

SAE Grade 2 Washers



Bolt Size Outside
Diameter
Inside
Diameter
Thickness Approx Lbs
per M Pcs
#6 0.375 0.156 .036/.065 1.26
#8 0.438 0.188 .036/.065 1.7
#10 0.5 0.219 .036/.065 2.3
#12 0.563 0.25 .051/.080 3.4
1/4 . 0.625 0.281 .051/.080 4.5
5/16 . 0.688 0.344 .051/.080 5.2
3/8 . 0.813 0.406 .051/.080 7.2
7/16 . 0.922 0.469 .051/.080 9.5
1/2 . 1.063 0.531 .074/.121 18.3
9/16 . 1.156 0.594 .074/.121 23.4
5/8 . 1.313 0.656 .074/.121 27.7
3/4 . 1.469 0.813 .108/.160 47.4
7/8 . 1.75 0.938 .108/.160 63
1 . 2 1.063 .108/.160 83
1-1/8 . 2.25 1.25 .108/.160 109
1-1/4 . 2.5 1.375 .136/.192 160
1-3/8 . 2.75 1.5 .136/.192 190
1-1/2 . 3 1.625 .136/.192 240





USS Grade 2 Washers



Bolt Size Outside
Diameter
Inside
Diameter
Thickness Approx Lbs
per M Pcs
3/16 . 0.563 0.25 .036/.065 2.8
1/4 . 0.75 0.313 .051/.080 6.7
5/16 . 0.875 0.375 .064/.104 11.5
3/8. 1 0.438 .064/.104 14.9
7/16 . 1.25 0.5 .064/.104 24.4
1/2 . 1.375 0.563 .086/.132 38.5
9/16 . 1.469 0.625 .086/.132 45.5
5/8 . 1.75 0.688 .108/.160 77
3/4 . 2 0.813 .122/.177 110
7/8 . 2.25 0.938 .136/.192 153
1 . 2.5 1.063 .136/.192 188
1-1/8 . 2.75 1.25 .136/.192 220
1-1/4 . 3 1.375 .136/.192 260
1-3/8 . 3.25 1.5 .153/.213 333
1-1/2 . 3.5 1.625 .153/.213 385
1-5/8 . 3.75 1.75 .153/.213 448
1-3/4 . 4 1.875 .153/.213 500
1-7/8 . 4.25 2 .153/.213 569
2 . 4.5 2.125 .153/.213 630
2-1/4 . 4.75 2.375 .193/.248 826
2-1/2 . 5 2.625 .210/.280 961
2-3/4 . 5.25 2.875 .228/.310 1100
3 . 5.5 3.125 .249/.327 1300


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