MS27576-7-51R
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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.
dished hexagon head style, 3a thread class, 0.369 inches minimum and 0.482 inches maximum thread length, 3.770 inches minimum and 3.790 inches maximum fastener length, right-hand thread direction
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
- 0.369 inches minimum and 0.482 inches maximum
- Fastener Length
- 3.770 inches minimum and 3.790 inches maximum
- Head Style
- dished hexagon
- Head Height
- 0.220 inches minimum and 0.235 inches maximum
- Width Between Flats
- 0.617 inches minimum and 0.627 inches maximum
- Grip Diameter
- 0.4358 inches minimum and 0.4367 inches maximum
- Shank Unthreaded Hole Diameter
- 0.106 inches minimum and 0.116 inches maximum first hole
- Nominal Thread Diameter
- 0.438 inches
- Grip Length
- 3.188 inches minimum and 3.204 inches maximum
- Thread Quantity Per Inch
- 20
- Hardness Rating
- 36.0 rockwell c minimum and 41.0 rockwell c maximum overall
- Distance From Head Largest Bearing Surface To Shank Hole Center
- 3.573 inches minimum and 3.680 inches maximum first hole
- Surface Finish
- 63.0 microinches bearing surface of head
- Surface Finish
- 63.0 microinches grip
- Special Features
- w/retaining element on shank
- Material
- steel comp e4340 or steel comp 4140 or steel comp 8740 or steel comp 4130 or steel comp 6150 overall
- Surface Treatment
- cadmium and chromate overall
- Surface Treatment Document And Classification
- qq-p-416 ty 2 cl 2 fed spec all treatment responses overall
- Thread Series Designator
- unjf
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5306-00-006-0661 | No Name Available | 06/01/1990 |
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 |
|---|---|
| 106467-7-51 | Close Tolerance Bolt |
| CA4510-7-51 | Close Tolerance Bolt |
| CIPRD-MS27576-7-51R | Close Tolerance Bolt |
| MS27576-7-51 | Close Tolerance Bolt |
| MS27576-7-51R | Close Tolerance Bolt |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5306-00-003-4122?
Does the NSN 5306-00-003-4122 have a Schedule B code assigned?
Does NSN 5306-00-003-4122 require demilitarization?
Does NSN 5306-00-003-4122 contain precious materials?
Does NSN 5306-00-003-4122 contain hazardous materials?
When the NSN 5306-00-003-4122 was assigned to the Federal Catalog?
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