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Concave Washer

Model / MPN: 6073-0 | NSN: 5310-00-083-9303
ITAR Registered seal

A washer which is round with a centrally located hole. One bearing surface is smooth, flat, and unbroken, the other bearing surface is smooth, unbroken, and is recessed to form a curved or spherical contour. See also washer (1), convex. Excludes washer (1), recessed and bearing, washer, thrust.

Product Details
NATO Stock Number
5310-00-083-9303
Sold in multiples of
25 EA
DEMIL
NO
Hole Diameter
Between 0.252 inches and 0.258 inches
Radius
Between 0.235 inches and 0.240 inches
Outside Diameter
Between 0.375 inches and 0.385 inches
Recess Depth
Between 0.040 inches and 0.050 inches
Material Thickness
Between 0.078 inches and 0.088 inches
Hardness Rating
Between 38.0 rockwell c and 44.0 rockwell c
Surface Finish
63.0 microinches counterbore wall
Heat Treatment
As fabricated
Material
Steel comp 8740 or steel comp 8630 or steel comp 4130 or steel comp 4027
Material Specification
Mil-s-6049 military specification 1st material response or mil-s-6050 military specification 2nd material response or mil-s-6758 military specification 3rd material response or mil-s-18729 military specification 3rd material response or astm a322 assn standard 4th material response
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, cl 3 federal specification single treatment response
Style Designator
Concave
Specification Data
81205-bacw10au manufacturers standard
6073 Series Parts
Solicitations
Solicitation Description Qty UOM Close Date
SPE5E716T0036 Washer, Concave 3868 EA 10/15/2015
SPE5E716T0419 Washer, Concave 4008 EA 10/19/2015
SPE5E318T0318 Washer, Concave 2500 EA 10/17/2017
SPE5E318T153D Washer, Concave 6538 EA 07/05/2018

Pricing and Availability

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