Model: 3179866-4

Machine Screw

Special Features:

Furnished withone silicon rubbero-ring and one polytetrafluoroethylene shim

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
Between 0.298 inches and 0.405 inches
Fastener Length
Between 0.360 inches and 0.405 inches
Head Style
Watertight
Head Diameter
Between 0.360 inches and 0.375 inches
Head Height
Between 0.095 inches and 0.105 inches
Internal Drive Style
Cross recess type 1
Thread Diameter
0.138 inches
Thready Qty Per Inch (tpi)
32
Screw Material
Steel comp 431
Screw Material Specification
Aisi assn standard single material response
Screw Surface Treatment
Passivate
Screw Surface Treatment Specification
Mil-f-14072 finish e300 military specification single treatment response
Thread Series Designator
Unc
NSN
5305-00-494-2707
Part Number
3179866-4
Description
Screw,machine
CAGE
77068

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.

Part 3179866-4 NSN 5305-00-494-2707

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06657
FIIG:
A500D0
Concept No.:
App. Key:
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

Packaging & Shipping

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

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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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