PBF1417-4-8
View detailed technical data, stock status, and sourcing information for: PBF1417-4-8
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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.
right-hand thread direction, 0.425 inches nominal thread length, 0.920 inches minimum and 0.930 inches maximum fastener length, flat countersunk head style, 3a thread class
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
- 0.425 inches nominal
- Fastener Length
- 0.920 inches minimum and 0.930 inches maximum
- Head Style
- flat countersunk
- Head Diameter
- 0.449 inches minimum and 0.507 inches maximum
- Grip Diameter
- 0.2485 inches minimum and 0.2495 inches maximum
- Internal Drive Style
- offset cruciform (torque set)
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 0.490 inches minimum and 0.510 inches maximum
- Thread Quantity Per Inch
- 28
- Minimum Tensile Strength
- 160000 pounds per square inch
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Surface Finish
- 32.0 microinches overall
- Material
- titanium alloy uns r56400 overall
- Thread Series Designator
- unjf
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FAQs
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What is the FSCG of the NSN 5305-01-398-7402?
Does the NSN 5305-01-398-7402 have a Schedule B code assigned?
Does NSN 5305-01-398-7402 require demilitarization?
Does NSN 5305-01-398-7402 contain precious materials?
Does NSN 5305-01-398-7402 contain hazardous materials?
When the NSN 5305-01-398-7402 was assigned to the Federal Catalog?
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