Model: 2890609-1

Assembled Washer Screw

Special Features:

2 holes in waser directly opposite each other 0.122-0.128 in. Dia; top of head chamfered 15.0 degrees x 0.380 in.

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 1.361 inches and 1.371 inches
Fastener Length
Between 1.511 inches and 1.521 inches
Head Style
Flat extended washer
Head Diameter
Between 0.620 inches and 0.630 inches
Head Height
Between 0.417 inches and 0.427 inches
Extended Washer Diameter
Between 1.245 inches and 1.255 inches
Extended Washer Thickness
Between 0.151 inches and 0.161 inches
Washer Quantity
1
Internal Drive Style
W/o internal drive
Thread Diameter
0.500 inches
Thready Qty Per Inch (tpi)
20
Primary Washer Outside Diameter
Between 1.245 inches and 1.255 inches
Primary Washer Style
Flat
Primary Washer Material Thickness
Between 0.151 inches and 0.161 inches
Material
Steel comp 630
Material Specification
Ams5643 assn standard single material response
Surface Treatment
Passivate
Surface Treatment Specification
Qq-p-35 federal specification single treatment response
Thread Series Designator
Unf
NSN
5305-01-161-6941
Part Number
2890609-1
Description
Screw,assembled Washer
CAGE
3B150

A screw, (as modified) to which has been assembled one or more nonremovable washer(s).

Part 2890609-1 NSN 5305-01-161-6941

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06660
FIIG:
A003B0
Concept No.:
App. Key:
SA
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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