NAS428H4A5
View detailed technical data, stock status, and sourcing information for: NAS428H4A5
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An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, bolt, shear. See also screw, cap, hexagon head and screw, machine.
0.625 inches minimum and 0.687 inches maximum fastener length, crowned hexagon head style, 0.563 inches minimum and 0.594 inches maximum thread length, right-hand thread direction, 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
- 0.563 inches minimum and 0.594 inches maximum
- Fastener Length
- 0.625 inches minimum and 0.687 inches maximum
- Head Style
- crowned hexagon
- Head Height
- 0.141 inches nominal
- Width Between Flats
- 0.428 inches minimum and 0.460 inches maximum
- Hole Diameter
- 0.062 inches nominal
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 0.031 inches minimum and 0.062 inches maximum
- Hole Quantity
- 1
- Hole Type
- drilled
- Features Provided
- finished head
- Thread Quantity Per Inch
- 28
- Minimum Tensile Strength
- 125000 pounds per square inch
- Hardness Rating
- 26.0 rockwell c minimum and 32.0 rockwell c maximum overall
- Hole Configuration Style
- hexagon flats
- Material
- steel comp 4140 or steel comp 8740 or steel comp 8630 or steel comp 8735 or steel comp 4130 or steel comp 4037 overall
- Surface Treatment
- cadmium and chromate overall
- Surface Treatment Document And Classification
- qq-p-416 fed spec single treatment response overall
- Thread Series Designator
- unf
- Specification/Standard Data
- 80205-nas428 professional/industrial association standard
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 |
|---|---|
| NAS428H4-5 | Machine Bolt |
| NAS428H4A5 | Machine Bolt |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5306-00-207-4589?
Does the NSN 5306-00-207-4589 have a Schedule B code assigned?
Does NSN 5306-00-207-4589 require demilitarization?
Does NSN 5306-00-207-4589 contain precious materials?
Does NSN 5306-00-207-4589 contain hazardous materials?
When the NSN 5306-00-207-4589 was assigned to the Federal Catalog?
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