5305-01-439-5179
Find complete technical information, availability, and procurement data for: 5305-01-439-5179
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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.
1.000 inches nominal fastener length, flat fillister head style, 3a thread class, right-hand thread direction, 1.000 inches nominal thread length
Product Characteristics
Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.
- Thread Class
- 3a
- Thread Direction
- right-hand
- Thread Length
- 1.000 inches nominal
- Fastener Length
- 1.000 inches nominal
- Head Style
- flat fillister
- Head Diameter
- 0.365 inches minimum and 0.375 inches maximum
- Head Height
- 0.244 inches minimum and 0.250 inches maximum
- Locking Feature
- patch or pellet or strip threads
- Internal Drive Style
- hexagon
- Nominal Thread Diameter
- 0.250 inches
- Width Across Flats
- 0.216 inches nominal
- Thread Quantity Per Inch
- 20
- Material
- plastic polyamide (nylon) locking feature
- Material
- steel corrosion resisting overall
- Thread Series Designator
- unrc
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 |
|---|---|
| 211040506 | Socket Head Cap Screw |
| 561-6404325-100 | Socket Head Cap Screw |
FAQs
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When the NSN 5305-01-439-5179 was assigned to the Federal Catalog?
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