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Worldwide distributor of NSN parts and consumables located in the USA.

Socket Head Cap Screw

Model / MPN: 591770 | NSN: 5305-00-945-8596
ITAR Registered seal

An externally threaded fastener whose threaded portion is of one diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See bolt, internal wrenching. Excludes screw, shoulder; and screw, machine.

Product Details
NATO Stock Number
5305-00-945-8596
Sold in multiples of
DEMIL
NO
Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.250 inches
Fastener Length
Between 0.234 inches and 0.266 inches
Head Style
Flat chamfer
Head Diameter
Between 0.218 inches and 0.226 inches
Head Height
Between 0.122 inches and 0.126 inches
Hole Diameter
Between 0.026 inches and 0.031 inches
Internal Drive Style
Hexagon
Thread Diameter
0.112 inches
Width Across Flats
Between 0.1094 inches and 0.1111 inches
Hole Quantity
6
Hole Type
Drilled
Thready Qty Per Inch (tpi)
40
Hardness Rating
32.0 rockwell c and 38.0 rockwell c
Hole Configuration Style
Round internal hexagon
Surface Finish
32.0 microinches threads
Material
Stainless steel
Material Specification
Ams 5616 assn standard single material response
Thread Series Designator
Unf
59177 Series Parts

Pricing and Availability

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591770 Cross Reference