521377
View detailed technical data, stock status, and sourcing information for: 521377
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An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. Excludes:bolt,machine; bolt,externally relieved body; bolt,internal wrenching; and screw,cap,socket head.
2a thread class, 0.138 inches minimum and 0.142 inches maximum thread length, right-hand thread direction, headless (setscrew) head style, 0.138 inches minimum and 0.142 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
- 2a
- Thread Direction
- right-hand
- Thread Length
- 0.138 inches minimum and 0.142 inches maximum
- Fastener Length
- 0.138 inches minimum and 0.142 inches maximum
- Head Style
- headless (setscrew)
- Point Diameter
- 0.25 inches nominal
- Point Style
- flat
- Internal Drive Style
- slot
- Nominal Thread Diameter
- 0.25 inches
- Thread Quantity Per Inch
- 28
- Chamfer Angle
- 45.0 degrees nominal
- Part Name Assigned By Controlling Agency
- screw,set
- Special Features
- the hole dia is 0.159 x 0.070 deep
- Material
- steel comp 303 overall
- Material Document And Classification
- astm a 582/a 582m alloy s30300 cond a assn std single material response overall
- Surface Treatment
- passivate overall
- Surface Treatment Document And Classification
- astm a967,treat in aqueous solution nitric 2 assn std single treatment response overall
- Thread Series Designator
- unf
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FAQs
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When the NSN 5305-01-661-3593 was assigned to the Federal Catalog?
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