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

Socket Head Cap Screw

Model / MPN: 1562278-1 | NSN: 5305-01-285-2020
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
5305-01-285-2020
Sold in multiples of
1 EA
DEMIL
NO
Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.235 inches and 0.327 inches
Fastener Length
Between 0.297 inches and 0.327 inches
Head Style
Binding
Head Diameter
Between 0.298 inches and 0.313 inches
Head Height
0.082 inches
Spline Minor Diameter
Between 0.080 inches and 0.082 inches
Spline Major Diameter
0.098 inches
Spline Width
Between 0.021 inches and 0.022 inches
Internal Drive Style
Six spline
Thread Diameter
0.164 inches
Thready Qty Per Inch (tpi)
32
Hardness Rating
36.0 rockwell c and 43.0 rockwell c
Part Name Assigned By Controlling Agency
Navy special project
Material
Steel
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416 type 2 cl 1 federal specification single treatment response
Thread Series Designator
Unc
1562278 Series Parts

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1562278-1 Cross Reference