BM17020-5-12
View detailed technical data, stock status, and sourcing information for: BM17020-5-12
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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.
0.351 inches minimum thread length, double hexagon head style, 3a thread class, right-hand thread direction, 1.101 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
- 0.351 inches minimum
- Fastener Length
- 1.101 inches nominal
- Head Style
- double hexagon
- Head Height
- 0.187 inches nominal
- Width Between Flats
- 0.492 inches minimum and 0.502 inches maximum
- Grip Diameter
- 0.3108 inches minimum and 0.3117 inches maximum
- Nominal Thread Diameter
- 0.312 inches
- Grip Length
- 0.750 inches nominal
- Thread Quantity Per Inch
- 24
- Minimum Tensile Strength
- 220000 pounds per square inch
- Hardness Rating
- 46.0 rockwell c minimum and 50.0 rockwell c maximum overall
- Material
- steel overall
- Material Document And Classification
- sps-m-107,fscm 03680 mfr ref single material response overall
- Surface Treatment
- cadmium overall
- Surface Treatment Document And Classification
- nas 672 assn std single treatment response overall
- Thread Series Designator
- unjf
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FAQs
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Does NSN 5306-00-925-9750 require demilitarization?
Does NSN 5306-00-925-9750 contain precious materials?
Does NSN 5306-00-925-9750 contain hazardous materials?
When the NSN 5306-00-925-9750 was assigned to the Federal Catalog?
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