Model: 2-56UNC3AX3-8

Socket Head Cap Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.375 inches
Fastener Length
0.375 inches
Head Style
Button
Head Diameter
Between 0.154 inches and 0.164 inches
Head Height
Between 0.038 inches and 0.046 inches
Spline Major Diameter
Between 0.061 inches and 0.062 inches
Internal Drive Style
Six spline
Thread Diameter
0.086 inches
Thready Qty Per Inch (tpi)
56
Hardness Rating
36.0 rockwell c and 43.0 rockwell c
Material
Steel
Surface Treatment
Cadmium
Thread Series Designator
Unc
NSN
5305-00-405-6956
Part Number
2-56UNC3AX3-8
Description
Screw,cap,socket Head
CAGE
08664

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.

Part 2-56UNC3AX3-8 NSN 5305-00-405-6956

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
16282
FIIG:
A003B0
Concept No.:
App. Key:
SC
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

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Schedule B and Export
  • Schedule B: 7318152000
  • SITC: 69421
  • End Use: Iron and steel products, other
  • NAICS: 332722
  • USDA: 1

Freight Class: Bolts and bolts and their nuts or washers exported in the same shipment

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