Model: 1A6-1291

Shouldered Washer

Special Features:

Chamfer 0.005 in. By 45 degrees on outside dia

Properties:

Hole Diameter
Between 0.188 inches and 0.190 inches
Shoulder Diameter
Between 0.248 inches and 0.250 inches
Outside Diameter
0.343 inches
Shoulder Height
Between 0.033 inches and 0.035 inches
Material Thickness
Between 0.021 inches and 0.024 inches
Material
Steel comp 1213
Material Specification
Aisi assn standard single material response
Surface Treatment
Cadmium and chromate
Style Designator
Shouldered
NSN
5310-01-044-3040
Part Number
1A6-1291
Description
Washer,shouldered
CAGE
02765

A washer, round in shape, and having a centrally located hole. One bearing surface is flat and unbroken, the other surface is in the form of a raised shoulder (boss) having a flat bearing surface. The thickness of the shoulder (boss) must not exceed 25 percent of the shoulder (boss) diameter. For items having a shoulder (boss) of greater thickness, use bearing, sleeve; bushing sleeve; or spacer, sleeve. Excludes insulator, washer and thrust type washers.

Part 1A6-1291 NSN 5310-01-044-3040

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
15934
FIIG:
A022B0
Concept No.:
1
App. Key:
A
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:
194160
UFC:
55210
LTL:
50.0
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7318220000
  • SITC: 69422
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Washers other than lock washers, iron or steel

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