Model: 66-14778-1

Internal Wrenching Bolt

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.673 inches and 0.703 inches
Fastener Length
Between 4.985 inches and 5.015 inches
Head Style
Bevel-conical
Head Diameter
Between 0.615 inches and 0.625 inches
Head Height
0.343 inches
Shank Unthreaded Hole Diameter
0.106 inches first hole and 0.111 inches first hole
Internal Drive Style
Hexagon
Thread Diameter
0.375 inches
Width Across Flats
Between 0.3755 inches and 0.3785 inches
Thready Qty Per Inch (tpi)
24
Distance From Head Largest Bearing Surface To Shank Hole Center
4.781 inches first hole
Material
Aluminum alloy 2024
Material Specification
Qq-a-200/3 temper t4 federal specification single material response
Surface Treatment
Anodize
Surface Treatment Specification
Mil-a-8625 type 1 military specification single treatment response
Thread Series Designator
Unf
NSN
5306-01-079-7245
Part Number
66-14778-1
Description
Bolt,internal Wrenching
CAGE
17765

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 66-14778-1 NSN 5306-01-079-7245

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:
SX
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
013280
UFC:
05450
LTL:
70.0
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7616106000
  • SITC: 69440
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Threaded fasteners of aluminum

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