1034-D310 ITEM 12
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A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use shim. For items fabricated from ceramic or electrically rated materials by specification or industry standards use insulator (1), washer. Excludes:disk, valve, graphite impregnated and lubricated items.
round peripheral shape style, 0.252 inches minimum and 0.260 inches maximum hole diameter, 0.062 inches nominal thickness, rectangular cross-sectional shape style, round center hole shape style
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
- Hole Diameter
- 0.252 inches minimum and 0.260 inches maximum
- Peripheral Shape Style
- round
- Center Hole Shape Style
- round
- Thickness
- 0.062 inches nominal
- Overall Diameter
- 0.531 inches nominal
- Surface Finish
- 63.0 microinches bottom
- Surface Finish
- 63.0 microinches top
- Material
- steel comp 321 or steel comp 347 overall
- Material Document And Classification
- mil-s-6721 mil spec all material responses or qq-s-763 fed spec all material responses overall
- Surface Treatment
- passivate overall
- Surface Treatment Document And Classification
- qq-p-35 fed spec single treatment response overall
- Specification/Standard Data
- 80205-nas1587 professional/industrial association standard
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5310-00-988-1435 | No Name Available | 06/01/1988 |
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:
| Part Number | Name |
|---|---|
| 10121253 | Flat Washer |
| 1034-D310 ITEM 12 | Flat Washer |
| NAS1587-4 | Flat Washer |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5310-00-279-9075?
Does the NSN 5310-00-279-9075 have a Schedule B code assigned?
Does NSN 5310-00-279-9075 require demilitarization?
Does NSN 5310-00-279-9075 contain precious materials?
Does NSN 5310-00-279-9075 contain hazardous materials?
When the NSN 5310-00-279-9075 was assigned to the Federal Catalog?
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Pricing
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