A78325-6H-4
View detailed technical data, stock status, and sourcing information for: A78325-6H-4
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An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.
right-hand thread direction, spline extended washer head style, 3a thread class, 0.624 inches minimum and 0.684 inches maximum thread length, 0.884 inches minimum and 0.924 inches maximum fastener 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
- 0.624 inches minimum and 0.684 inches maximum
- Fastener Length
- 0.884 inches minimum and 0.924 inches maximum
- Head Style
- spline extended washer
- Head Height
- 0.327 inches minimum and 0.347 inches maximum
- Extended Washer Diameter
- 0.691 inches minimum and 0.701 inches maximum
- Extended Washer Thickness
- 0.044 inches minimum and 0.064 inches maximum
- Hole Diameter
- 0.230 inches minimum and 0.270 inches maximum
- Grip Diameter
- 0.3740 inches minimum and 0.3745 inches maximum
- Head Minor Diameter
- 0.448 inches minimum and 0.453 inches maximum
- Nominal Thread Diameter
- 0.375 inches
- Grip Length
- 0.240 inches minimum and 0.260 inches maximum
- Hole Quantity
- 4
- Hole Type
- drilled
- Thread Quantity Per Inch
- 24
- Hole Configuration Style
- spline
- Material
- nickel alloy 718 overall
- Material Document And Classification
- ams5662 assn std single material response overall
- Surface Treatment
- passivate overall
- Surface Treatment Document And Classification
- qq-p-35 fed spec single treatment response overall
- Thread Series Designator
- unjf
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 |
|---|---|
| A78325-6H-4 | Close Tolerance Bolt |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5306-01-361-7056?
Does the NSN 5306-01-361-7056 have a Schedule B code assigned?
Does NSN 5306-01-361-7056 require demilitarization?
Does NSN 5306-01-361-7056 contain precious materials?
Does NSN 5306-01-361-7056 contain hazardous materials?
When the NSN 5306-01-361-7056 was assigned to the Federal Catalog?
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