NSN 5305-01-321-9731
Button Head Socket Screw
About this product
2.750 inches fastener length, flat countersunk head style, between 0.872 inches and 0.938 inches head diameter, internal drive style: hexagon.
Manufacturer part number 1/2-13UNC-3A 2 3/4 IN. LG for national stock number 5305013219731.
Datasheet
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Product description
Socket Head Cap Screw NSN 5305-01-321-9731.
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MPN or Model
1/2-13UNC-3A 2 3/4 IN. LG
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Schedule B
7508.90.0000 (Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire)) -
NMF (National Motor Freight)
139820 - Nickel Bolts/nails/nuts/rivets Etc -
Unit Weight (Est.)
0.1 lb -
Thread Class
3a -
Thread Direction
Right-hand -
Thread Length
Between 1.500 inches and 2.380 inches -
Fastener Length
2.750 inches -
Head Style
Flat countersunk -
Head Diameter
Between 0.872 inches and 0.938 inches -
Internal Drive Style
Hexagon -
Thread Diameter
0.500 inches -
Width Across Flats
0.312 inches -
Thready Qty Per Inch (tpi)
13 -
Countersink Angle
Between 80.0 degrees and 84.0 degrees -
Material
Nickel alloy 400 or nickel alloy r-405 -
Material Specification
Qq-n-281 federal specification all material responses -
Thread Series Designator
Unc -
Nondefinitive Specification/std Data
4 type
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Socket Head Cap Screw
An externally threaded fastener whose threaded portion is of one nominal 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.
![Mechanic Bill explains Button Head Socket Screw](/public/images/billy-thinking.png)
Pricing and Availability
Get a quote for 5305-01-321-9731 socket head cap screwManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
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1/2-13UNC-3A 2 3/4 IN. LG | American National Standards |
FF-S-86 | Federal Specifications |
Stock Check
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