5306-01-643-2339
Find complete technical information, availability, and procurement data for: 5306-01-643-2339
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A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. 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. The unthreaded portion is of specific 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. A locking feature may be incorporated in the design of the head or threads. See bolt, machine and bolt, clevis.
double hexagon extended washer head style, right-hand thread direction, 1.036 inches minimum thread length, 3a thread class, 4.056 inches nominal 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
- 1.036 inches minimum
- Fastener Length
- 4.056 inches nominal
- Head Style
- double hexagon extended washer
- Head Height
- 0.711 inches nominal
- Width Between Flats
- 0.8125 inches nominal
- Extended Washer Diameter
- 1.220 inches minimum and 1.230 inches maximum
- Extended Washer Thickness
- 0.178 inches nominal
- Hole Diameter
- 0.05 inches minimum and 0.06 inches maximum
- Grip Diameter
- 0.7480 inches minimum and 0.7490 inches maximum
- Nominal Thread Diameter
- 0.7500 inches
- Grip Length
- 2.99 inches minimum and 3.01 inches maximum
- Hole Quantity
- 4
- Hole Type
- drilled
- Thread Quantity Per Inch
- 16
- Minimum Tensile Strength
- 180000 pounds per square inch
- Hardness Rating
- 39.0 rockwell c minimum and 43.0 rockwell c maximum overall
- Hole Configuration Style
- hexagon flats
- Surface Finish
- 125.0 microinches grip
- Surface Finish
- 125.0 microinches threads
- Surface Finish
- 32.0 microinches bearing surface of head
- Part Name Assigned By Controlling Agency
- bolt,tension,steel,external wrenching,flanged,12-point,180 ksi ftu,450 degree
- Special Features
- maximum tensile strength is 200,000 psi
- Material
- steel comp 4140 or steel comp 4340 or steel comp 8740 or steel comp 6150 overall
- Material Document And Classification
- mil-s-5826(aisi 4140) government std/spec 1st material response or mil-s-5000(aisi 4340) government std/spec 2nd material response or mil-s-6049(aisi 8740) government std/spec 3rd material response or mil-s-8503(aisi 6150) government std/spec 4th material response overall
- Surface Treatment
- cadmium overall
- Surface Treatment Document And Classification
- qq-p-416,type ii,class 2 national std single treatment response overall
- Thread Series Designator
- unjf
- Specification/Standard Data
- 80205-nas-21250 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 |
|---|---|
| MS21250H12048 | Shear Bolt |
FAQs
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