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ARP 400-8550 Chrome Moly Hardened Washers with Chamfer - 10-Piece

Part of: ARP Chrome Moly Hardened Washers with Chamfer

Other options in this family: ARP 200-8534 ARP 200-8557 ARP 400-8539 ARP 200-8585 ARP 200-8587

Manufacturer

Picture for manufacturer ARP

Part Number

400-8550
11 reviews
Sale Price

$13.57

In Stock (8)

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

These precision washers feature an inside diameter chamfer that provides proper seating and load distribution when used with ARP fasteners and cylinder head studs.

Key Features:

  • Premium chrome moly steel construction for exceptional strength and durability
  • Parallel-ground surfaces ensure even clamping load distribution
  • Heat-treated and hardened to prevent crushing under high torque loads
  • Black oxide finish provides corrosion resistance and professional appearance
  • I.D. chamfer allows proper fastener seating and reduces stress concentrations
  • Precision manufactured to ARP's exacting tolerances

ARP washers are engineered to work in conjunction with ARP fasteners to achieve optimal clamping force without deformation. The chamfered inner diameter accommodates fastener underhead radius, while the parallel-ground flat surfaces ensure uniform load transfer to the component being fastened. These washers are essential when installing high-performance cylinder head studs or bolts where precise torque values and consistent clamping are critical.

Package Contents: 10 hardened washers with chamfer

Products specifications

Hardened

No

Inside Diameter Chamfer

Yes

Quantity

Sold as a set of 10.

Size (ID/OD)

5/16 / 0.625

Thickness

.120?

Washer Finish

Natural

Washer Inside Diameter (in)

0.313 in.

Washer Inside Diameter (mm)

7.950 mm

Washer Material

Stainless steel

Washer Outside Diameter (in)

0.625 in.

Washer Outside Diameter (mm)

15.875 mm

Washer Thickness (in)

0.120 in.

Washer Thickness (mm)

3.048 mm

Excellent, washers are nice and thick. I went with the 6 point for clearance issues... Came in a timely manner...

Used ApplePay to checkout. The entire transaction from Add-To-Cart to Thank You For Your Order was under 30 seconds.

Fast turn around

Definitely will shop here again

No problems at all

Fast shipping

Good fast shipping. Easy ordering.

very good

ordered fuel cans, marked as shipped next day! quick shipping great prices! cant go wrong, will be ordering from them again!

Fantastic ! Ordered a Weather Tech Cargo Liner for my 2012 Ford Explorer. Price was $60 less here than ALL other sites on web. I was skeptical that this was going to be a counterfeit -- as the price was too good to be true. I was extremely happy to receive the genuine product as I expected in less than a week -- and for $60 less than the competitors ! GREAT VALUE and great service ! I will definitely be back !!

Wow Super fast shipping, right product, no hassle no fuss. just how i like it. good job autoplicity keep it up.

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