Model: 16990-94C-4P3A

Socket Head Cap Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.724 inches
Fastener Length
0.875 inches
Head Style
Flat countersunk
Head Diameter
0.082 inches
Internal Drive Style
Hexagon
Thread Diameter
0.112 inches
Width Across Flats
0.625 inches
Thready Qty Per Inch (tpi)
40
Min. Tensile Strength (psi)
80000 pounds per square inch
Hardness Rating
36.0 rockwell c and 43.0 rockwell c
Countersink Angle
Between 80.0 degrees and 82.0 degrees
Material
Steel
Surface Treatment
Passivate
Thread Series Designator
Unrc
Specification Data
56878-16990-94c-4+3a manufacturers standard
NSN
5305-01-328-2693
Part Number
16990-94C-4P3A
Description
Screw,cap,socket Head
CAGE
56878

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 16990-94C-4P3A NSN 5305-01-328-2693

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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