4NKB01023
View detailed technical data, stock status, and sourcing information for: 4NKB01023
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An item of any peripheral shape usually having one flat or spherical surface and a centrally located hole. It is designed for applications involving moving (kinetic) loads. Except for items fabricated from bearing quality synthetic (plastic) or composed of multilayer material, one bearing surface must either have a specific surface finish designation of 32 microinch (0.8 micrometre) or less, arithmetical average (aa) (arithmetic mean deviation) or one of the following conditions: be lapped or ground; have visible or detectable means of lubrication; grooves, indentations; or self-lubrication. The thickness must not exceed 25 percent of the outside diameter of the shortest distance between peripheral flats (when thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance). Excludes:straight, tubular (without flange) items having a bearing surface(s) parallel to the axis of the bore only. See also washer, flat and spacer, sleeve.
2.3750 inches nominal outside diameter, 1.7810 inches nominal diameter, rectangular cross-sectional shape style, round center hole shape style, 0.1750 inches minimum and 0.1770 inches maximum overall thickness
Product Characteristics
Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.
- Cross-Sectional Shape Style
- rectangular
- Outside Diameter
- 2.3750 inches nominal
- Center Hole Shape Style
- round
- Diameter
- 1.7810 inches nominal
- Overall Thickness
- 0.1750 inches minimum and 0.1770 inches maximum
- Corner Shape
- chamfered second inside corner
- Corner Shape
- square first inside corner
- Corner Shape
- square first outside corner
- Corner Shape
- square second outside corner
- Hardness Rating
- 40.0 rockwell c minimum and 45.0 rockwell c maximum overall
- Material
- steel comp 1045 overall
- Material Document And Classification
- qq-s-634 fed spec single material response overall
- Surface Condition
- ground
- Style Designator
- round
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 2520-00-773-5650 | No Name Available | 03/06/1967 |
Related Parts
This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 3120-00-661-4430?
Does the NSN 3120-00-661-4430 have a Schedule B code assigned?
Does NSN 3120-00-661-4430 require demilitarization?
Does NSN 3120-00-661-4430 contain precious materials?
Does NSN 3120-00-661-4430 contain hazardous materials?
When the NSN 3120-00-661-4430 was assigned to the Federal Catalog?
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