NK5-4A
View detailed technical data, stock status, and sourcing information for: NK5-4A
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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.
0.578 inches minimum and 0.625 inches maximum fastener length, 0.500 inches minimum and 0.579 inches maximum thread length, hexagon head style, 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
- 0.500 inches minimum and 0.579 inches maximum
- Fastener Length
- 0.578 inches minimum and 0.625 inches maximum
- Head Style
- hexagon
- Head Height
- 0.172 inches minimum and 0.204 inches maximum
- Width Between Flats
- 0.490 inches minimum and 0.502 inches maximum
- Locking Feature
- pellet threads
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 0.046 inches minimum and 0.078 inches maximum
- Features Provided
- finished head
- Thread Quantity Per Inch
- 24
- Minimum Tensile Strength
- 125000 pounds per square inch
- Hardness Rating
- 26.0 rockwell c minimum and 32.0 rockwell c maximum overall
- 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
- Material Document And Classification
- mil-s-5626 mil spec 1st material response or mil-s-6049 mil spec 2nd material response or mil-s-6050 mil spec 3rd material response or ggams-6300 mil spec 4th material response overall
- Surface Treatment
- cadmium and chromate overall
- Surface Treatment Document And Classification
- qq-p-416,ty2,cl3 fed spec single treatment response overall
- Thread Series Designator
- uns
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 |
|---|---|
| NK5-4A | Machine Bolt |
FAQs
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What is the FSCG of the NSN 5306-00-061-9777?
Does the NSN 5306-00-061-9777 have a Schedule B code assigned?
Does NSN 5306-00-061-9777 require demilitarization?
Does NSN 5306-00-061-9777 contain precious materials?
Does NSN 5306-00-061-9777 contain hazardous materials?
When the NSN 5306-00-061-9777 was assigned to the Federal Catalog?
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