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Socket Head Cap Screw

Model / MPN: 20409-003 FIND 35 | NSN: 5305-01-321-8735
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
5305-01-321-8735
Sold in multiples of
1 EA
DEMIL
NO
Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.563 inches and 0.625 inches
Fastener Length
Between 0.595 inches and 0.625 inches
Head Style
Flat chamfer
Head Diameter
Between 0.303 inches and 0.312 inches
Head Height
Between 0.185 inches and 0.190 inches
Hole Diameter
Between 0.044 inches and 0.050 inches
Internal Drive Style
Hexagon
Thread Diameter
0.190 inches
Width Across Flats
Between 0.156 inches and 0.158 inches
Hole Quantity
6
Hole Type
Drilled
Thready Qty Per Inch (tpi)
32
Min. Tensile Strength (psi)
160000 pounds per square inch
Hardness Rating
33.0 rockwell c and 42.0 rockwell c
Minimum Yield Strength
120000 pounds per square inch
Hole Configuration Style
Round internal hexagon
Material
Iron alloy 660
Material Specification
Ams 5731 assn standard single material response or ams 5737 assn standard single material response
Precious Material And Location
silver
Precious Material
Silver
Surface Treatment
Silver
Surface Treatment Specification
Ams 2411 assn standard single treatment response
Thread Series Designator
Unrf
Specification Data
80205-nas1351 professional/industrial association standard
20409 Series Parts

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20409-003 FIND 35 Cross Reference
  • NAS1351N3H10S