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Hardened Steel Washers Astm F 436

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A complete metric companion to Specification F436 has been developed — Specification F436M.


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► 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.

ASTM F436 HDG
ASTM F436 Black
ASTM F436 ZY Cr+3
ASTM F436 ZY

►  Hardened Steel Washers ASTM F436 Dimensions

ASTM F436
 Hardened Steel Washers ASTM F436-93
Bolt
size
Nominal Inside
Diameter (ID)
ID
Tolerances
Nominal Outside
Diameter (OD)
OD
Tolerances
Thickness (T) Weight/M
min. max. (kgs)
1/4 9/32 -0 +1/32  5/8 -1/32 +1/32 0.051 0.080 2.06
5/16 11/32 -0 +1/32  11/16 -1/32 +1/32 0.051 0.080 2.35
3/8 13/32 -0 +1/32 13/16 -1/32 +1/32 0.051 0.080 3.28
7/16 15/32 -0 +1/32 59/64 -1/32 +1/32 0.051 0.080 4.17
1/2 17/32 -0 +1/32 1  1/16 -1/32 +1/32 0.097 0.177 11.20%
5/8  11/16 -0 +1/32 1  5/16 -1/32 +1/32 0.122 0.177 18.88
3/4 13/16 -0 +1/32 1 15/32 -1/32 +1/32 0.122 0.177 22.61
7/8 15/16 -0 +1/32 1 3/4 -1/32 +1/32 0.136 0.177 34.53
1 1 1/8 -0 +1/32 2 -1/32 +1/32 0.136 0.177 43.24
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

Surface Treatments

● Zinc Cr+3 ● Mechanically Deposited Zinc ● Hot Dip Galvanizing
● Yellow Zinc ● Dacromet ● Delta
● Geomet ● Magni ● Customized

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► Hardened Steel Washers ASTM F436 FAQ

Q1. Can you provide customization services?

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.

Q2. What types of customized parts do you provide?

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.

Q3. Does every customized part need mould fee? 

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.

Q4. Where are your factories, can I have a visit? 

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.

Q5. Can you provide free samples?

A. Yes, for standard fasteners we can provide free samples. Please kindly understand that we charge certain fees before making customized samples.

Q6. How do you guarantee quality?

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.

Q7. If I have paid the mould fee yet receive nonconforming samples, what will you do?

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.

Q8. What is your MOQ? Any mould fee? Is the mould fee refundable?

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.

Q9. What is your delivery time?

A: 15-30 days for samples, 25-50 days for mass production.

Q10. Do you accept the use of our own logo?

A. If the order quantity is large, we absolutely accept OEM.


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