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Worldwide distributor of NSN parts and consumables located in the USA.

Shouldered And Recessed Washer

Model / MPN: 20403-A | NSN: 5310-01-198-2717
ITAR Registered seal

A washer, round in shape, having a centrally located hole. One bearing surface is flat, the other surface is in the form of a raised shoulder (boss) having a flat bearing surface. Either or both of the bearing surfaces must be broken by a counterbore, countersink, or similar shaped recess. The thickness of the shoulder (boss) must not exceed 25 percent of the shoulder (boss) diameter. For items having a shoulder (boss) of greater thickness, use bearing, sleeve; bushing, sleeve; or spacer, sleeve. Excludes insulator, washer and thrust type washers.

Product Details
NATO Stock Number
5310-01-198-2717
Sold in multiples of
1 EA
DEMIL
DEMIL/MLI
Hole Diameter
0.531 inches
Shoulder Diameter
Between 1.469 inches and 1.531 inches
Outside Diameter
Between 1.969 inches and 2.031 inches
Recess Diameter
Between 1.219 inches and 1.281 inches
Shoulder Height
0.312 inches
Recess Depth
0.312 inches
Material Thickness
0.188 inches
Criticality Code Justification
Zzzy
Material
Steel comp 304
Material Specification
Mil-s-23195 comp 304 ty a military specification single material response
Style Designator
Shouldered and recessed
Reference Number Differentiating Characteristics
Material will be in accordance with ships parts control center activity hx quality control, manufacturing and testing specifications

Pricing and Availability

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20403-A Cross Reference
  • 5330-F PC14