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Recessed Washer NSN 5310-01-031-8375

Item Description

A washer of any peripheral shape having a centrally located hole. Both bearing surfaces are parallel and flat, but one or both of the bearing surfaces must be broken by a counterbore, countersink, or similarly shaped recess. The thickness must not exceed 25 per cent of the outside diameter or the largest outside dimension. The maximum limit of the tolerance or range applied to the thickness and/or largest outside dimension must be used to determine compliance. Excludes washer, concave, retainer, packing, and thrust type washers. See also spacer, sleeve; and spacer, stepped.

NSN 5310-01-031-8375 NSN: 5310-01-031-8375

Features and Characteristics

Hole Diameter
Between 0.396 inches and 0.416 inches
Outside Diameter
0.875 inches
Material Thickness
Between 0.146 inches and 0.166 inches
Top Recess Diameter
Between 0.488 inches and 0.508 inches
Bottom Recess Angle
90.0 degrees
Top Recess Angle
90.0 degrees
Criticality Code Justification
Zzzw
Bottom Recess Diameter
Between 0.488 inches and 0.508 inches
Special Features
Od beveled 0.030 in. By 45 deg, washer cyanide hardened 0.005 to 0.008 in. Deep
Color
Black
Material
Steel
Material Specification
Aisi 12l14 assn standard single material response
Surface Treatment
Oxide film
Style Designator
Recessed both sides
Departure From Cited Document
As differentiated by special quality control testing for mk 48 torpedo
FSC
5310 Nuts And Washers
NIIN
010318375
NSN
5310010318375

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
2508835
Cage Code:
10001
Status:
A
MSDS:
Part Number:
PFW-375
Cage Code:
94882
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 7318220000
  • NAICS: 332722
  • SITC: 69422
  • Description: Washers other than lock washers, iron or steel
  • End Use (Code 12300):
    Finished metal shapes

Q & A

Frequently asked questions for NSN 5310-01-031-8375
What are the manufacturers of nsn 5310010318375?
Does this nsn 5310010318375 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310010318375
A washer of any peripheral shape having a centrally located hole. both bearing surfaces are parallel and flat, but one or both of the bearing surfaces must be broken by a counterbore, countersink, or similarly shaped recess. the thickness must not exceed 25 per cent of the outside diameter or the largest outside dimension. the maximum limit of the tolerance or range applied to the thickness and/or largest outside dimension must be used to determine compliance. excludes washer, concave, retainer, packing, and thrust type washers. see also spacer, sleeve; and spacer, stepped.
Does nsn 5310010318375 contain any precious metals?
Precious metal content is unknown.
Does nsn 5310010318375 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310010318375?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
15933
FIIG:
A022B0
App. Key:
A
Cond. Code:
1
Status:
A

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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
  •   Quality Fast Service
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