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Shouldered And Recessed Washer NSN 5310-01-243-9437

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 5310-01-243-9437 NSN: 5310-01-243-9437

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Features and Characteristics

Hole Diameter
Between 4.025 inches and 4.035 inches
Shoulder Diameter
4.560 inches
Outside Diameter
5.880 inches
Shoulder Height
0.340 inches
Material Thickness
Between 0.159 inches and 0.163 inches
Hardness Rating
Between 32.0 rockwell c and 38.0 rockwell c
Special Features
Depth of bottom recess 0.160 in., chamfer outer edge 30 deg
Material
Steel comp 4140 or steel comp 4142 or steel comp 8640
Material Specification
Astm a322 assn standard all material responses
FSC
5310 Nuts And Washers
NIIN
012439437
NSN
5310012439437

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
13211E8712
Cage Code:
97403
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 5310-01-243-9437
What are the manufacturers of nsn 5310012439437?
Does this nsn 5310012439437 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310012439437
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 5310012439437 contain any precious metals?
No precious metal content.
Does nsn 5310012439437 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310012439437?
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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