33686
View detailed technical data, stock status, and sourcing information for: 33686
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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.
0.672 inches minimum and 0.688 inches maximum fastener length, 0.471 inches minimum and 0.513 inches maximum thread length, right-hand thread direction, 2a thread class, flat countersunk head style
Product Characteristics
Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.
- Thread Class
- 2a
- Thread Direction
- right-hand
- Thread Length
- 0.471 inches minimum and 0.513 inches maximum
- Fastener Length
- 0.672 inches minimum and 0.688 inches maximum
- Head Style
- flat countersunk
- Head Diameter
- 0.660 inches minimum and 0.693 inches maximum
- Internal Drive Style
- slot
- Nominal Thread Diameter
- 0.375 inches
- Thread Quantity Per Inch
- 24
- Hardness Rating
- 93.4 rockwell c nominal
- Countersink Angle
- 82.0 degrees minimum and 84.0 degrees maximum
- Screw Material
- steel comp 1008
- Screw Material Document And Classification
- sae assn std single material response
- Screw Surface Treatment
- dichromate zinc
- Thread Series Designator
- unf
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5305-00-208-6291 | No Name Available | 06/11/1971 |
| 5305-00-298-1351 | No Name Available | 01/01/1961 |
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 |
|---|---|
| 10A1913960 | Machine Screw |
| 1603114 | Machine Screw |
| 1913960 | Machine Screw |
| 33686 | Machine Screw |
| 3F-0379 | Machine Screw |
| 3F379 | Machine Screw |
| FF-S-92B TYPE I ST 2S | Machine Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-00-428-6527?
Does the NSN 5305-00-428-6527 have a Schedule B code assigned?
Does NSN 5305-00-428-6527 require demilitarization?
Does NSN 5305-00-428-6527 contain precious materials?
Does NSN 5305-00-428-6527 contain hazardous materials?
When the NSN 5305-00-428-6527 was assigned to the Federal Catalog?
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