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Shouldered And Recessed Washer NSN 5310-01-131-2958

Item Description

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.

NSN 5310-01-131-2958 NSN: 5310-01-131-2958

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Features and Characteristics

Hole Diameter
Between 0.312 inches and 0.319 inches
Shoulder Diameter
1.830 inches
Outside Diameter
2.900 inches
Recess Diameter
Between 0.375 inches and 0.405 inches
Shoulder Height
0.140 inches
Recess Angle
90.0 degrees
Special Features
Bearing surface convex 3.000 in. Radius
Material
Aluminum alloy 7075
FSC
5310 Nuts And Washers
NIIN
011312958
NSN
5310011312958

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
74A110681-2003
Cage Code:
76301
Status:
A
MSDS:
Part Number:
10109600
Cage Code:
A486G
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 7616108000
  • NAICS: 332722
  • SITC: 69440
  • Description: Cotters, cotter-pins, washers and similar articles, of aluminum
  • End Use (Code 12300):
    Finished metal shapes

Q & A

Frequently asked questions for NSN 5310-01-131-2958
What are the manufacturers of nsn 5310011312958?
Does this nsn 5310011312958 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310011312958
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.
Does nsn 5310011312958 contain any precious metals?
No precious metal content.
Does nsn 5310011312958 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310011312958?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
15935
FIIG:
A022B0
App. Key:
A
Cond. Code:
1
Status:
A

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