Hardened Steel Washers Astm F 436
► Hardened Steel Washers ASTM F436 Introduction
Hardened Steel Washers F436 are intended for general-purpose mechanical and structural use with bolts, nuts, studs, and other internally and externally threaded fasteners. These washers are suitable for use with fasteners covered in Specifications A 325, A 354, A 449, A 490, and A 687.
► Hardened Steel Washers ASTM F436 Dimensions
|Hardened Steel Washers ASTM F436-93|
|1 1/8||1 1/4||－0||＋1/32||2 1/4||－1/32||＋1/32||0.136||0.177||55.34|
|1 1/4||1 3/8||－0||＋1/32||2 1/2||－1/32||＋1/32||0.136||0.177||68.93|
|1 3/8||1 1/2||－0||＋1/32||2 3/4||－1/32||＋1/32||0.136||0.177||84.00|
|1 1/2||1 5/8||－0||＋1/32||3||－1/32||＋1/32||0.136||0.177||100.55|
|1 3/4||1 7/8||－0||＋1/16||3 3/8||－1/16||＋1/16||0.178||0.28||182.20|
|2||2 1/8||－0||＋1/16||3 3/4||－1/16||＋1/16||0.178||0.28||220.88|
|2 1/4||2 3/8||－0||＋1/16||4||－1/16||＋1/16||0.24||0.34||303.52|
|2 1/2||2 5/8||－0||＋1/16||4 1/2||－1/16||＋1/16||0.24||0.34||391.42|
|2 3/4||2 7/8||－0||＋1/16||5||－1/16||＋1/16||0.24||0.34||490.31|
|3||3 1/8||－0||＋1/8||5 1/2||－1/8||＋1/8||0.24||0.34||600.18|
|3 1/4||3 3/8||－0||＋1/8||6||－1/8||＋1/8||0.24||0.34||20%1.04|
|3 1/2||3 5/8||－0||＋1/8||6 1/2||－1/8||＋1/8||0.24||0.34||852.89|
|3 3/4||3 7/8||－0||＋1/8||7||－1/8||＋1/8||0.24||0.34||995.20%|
|4||4 1/8||－0||＋1/8||7 1/2||－1/8||＋1/8||0.24||0.34||1208.14|
► Hardened Steel Washers ASTM F436 Materials
Steel used in the manufacture of washers shall be produced by the open-hearth, basic-oxygen, or electric-furnace process.
Washers up to and including 1-1/2 inch in bolt size shall be through hardened. Washers over 1-1/2 inch may be either through hardened or carburized at the option of the manufacturer.
► Hardened Steel Washers ASTM F436 Properties
Through hardened washers shall have a hardness of 38 to 45 HRC, except when zinc-coated by the hot-dip process, in which case they shall have a hardness of 26 to 45 HRC.
Carburized washers shall be carburized to a minimum depth of 0.015 inch and shall have a surface hardness of 69 to 73 HRA or 79 to 83 HR15N, except when zinc-coated by the hot-dip process, in which case they shall have a hardness of 63 to 73 HRA or 73 to 83 HR15N.
Carburized and hardened washers shall have a minimum core hardness of 30 HRC or 65 HRA.
► Hardened Steel Washers ASTM F436 Surface Treatments
|● Zinc Cr+3||● Mechanically Deposited Zinc||● Hot Dip Galvanizing|
|● Yellow Zinc||● Dacromet||● Delta|
|● Geomet||● Magni||● Customized|
► Hardened Steel Washers ASTM F436 FAQ
A. Yes, T&S initially manufactures standard flat washers, lock washers and conical washers, but in the past 17 years, T&S has already developed successfully 980 customized parts in different sizes.
A. T&S provides stamping parts, sheet metal parts, machining parts, cold heading parts, hot forging parts, cold working parts, Zn-Al die casting parts, powder metallurgy parts, and other customized parts.
T&S is capable of providing customized parts not only with single-process, but also with a variety of combined crafts.
A. Not all customized parts cost mould fee. For example, a turning part does not need a mould yet requires the appropriate tools and fixtures. T&S spends time and labor making samples, therefore charges certain sample fees.
A. T&S has its factories. We have invested in multiple factories, which are mainly located in Zhejiang and Jiangsu Province. You can visit the corresponding factories depending on the products to be purchased. Please feel free to visit our factories and offer guidance. We can pick you up at the nearest airport or train station.
A. Yes, for standard fasteners we can provide free samples. Please kindly understand that we charge certain fees before making customized samples.
A. T&S conducts quality control in strict accordance with the ISO9001 Quality Certification System. T&S practices the worker's self-inspection and routing inspection on a regular basis during production, the QC strict sampling before packaging and delivery after compliance. Each batch of products is accompanied by Inspection Certificate from T&S and Raw Material Test Report from the steel factory.
A. For the first development of non-standard parts, we refund the mould fee in case of 2 times of nonconforming samples delivered. If you give us more chances to make the moulds, we will continue to study until success.
A. MOQ for non-standard fasteners: 1-2 tons according to different parts. We charge mould fees, which will be refunded when reaching a certain quantity, more to be described in our quotation.
B. MOQ for stamping parts : Depending on the degree of difficulty and dimensions of the parts. We will charge mould fee and refund it when reaching a certain quantity, more to be described in our quotation.
C. MOQ for turning parts is 100 pieces, and no mould fee to be charged. But if you need samples for confirming, we will charge sample fee and refund it after doing the order.
A: 15-30 days for samples, 25-50 days for mass production.
A. If the order quantity is large, we absolutely accept OEM.