Model: 20016A2-3C

Internal Wrenching Bolt

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.122 inches and 0.188 inches
Fastener Length
Between 0.158 inches and 0.188 inches
Head Style
Flat chamfer
Head Diameter
Between 0.134 inches and 0.140 inches
Head Height
Between 0.083 inches and 0.086 inches
Internal Drive Style
Hexagon
Thread Diameter
0.086 inches
Width Across Flats
0.078 inches
Thready Qty Per Inch (tpi)
56
Min. Tensile Strength (psi)
180000 pounds per square inch
Hardness Rating
38.0 rockwell c and 45.0 rockwell c
Minimum Yield Strength
155000 pounds per square inch
Part Name Assigned By Controlling Agency
Navy special project
Material
Steel comp 4140 or steel comp 4142 or steel comp 8640
Surface Treatment
Oxide
Surface Treatment Specification
Mil-c-13924, cl 1 military specification single treatment response
Thread Series Designator
Unc
NSN
5306-01-033-4354
Part Number
20016A2-3C
Description
Bolt,internal Wrenching
CAGE
71159

An externally threaded fastener whose threaded portion is of one nominal diameter, no. 10 (0.190 in.) (5 mm) or larger. It is designed with an internal socket or internal multiple spline for use with an internal driver. The head is beveled (conical) or cylindrical in shape. Items with cylindrical shaped heads must have an externally relieved body. A locking feature may be incorporated in the design of the head or threads. See also screw, cap, socket head. Excludes setscrew; screw, shoulder; bolt, shoulder; screw, externally relieved body; bolt, externally relieved body; and screw, machine.

Part 20016A2-3C NSN 5306-01-033-4354

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06666
FIIG:
A003B0
Concept No.:
App. Key:
BM
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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
573
TCC:
Z
SHC:
9
ACC:
Construction Materials

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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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