Model: SM-B-745222

Lock Washer

Properties:

Hole Diameter
Between 0.256 inches and 0.295 inches
Outside Diameter
Between 0.670 inches and 0.700 inches
Material Thickness
Between 0.032 inches and 0.040 inches
Hardness Rating
Between 86.0 rockwell b and 92.0 rockwell b
Material
Copper alloy
Material Specification
Qq-b-750 temper extra hard federal specification single material response
Surface Treatment
Oxide film
Surface Treatment Specification
Mil-f-495 military specification single treatment response
Style Designator
Flat external and internal teeth
NSN
5310-00-237-6781
Part Number
SM-B-745222
Description
Washer,lock
CAGE
80064

A washer which is usually round with a centrally located hole. Its edges and two bearing surfaces are so designed that applied pressure brings into play the spring tension and/or frictional locking principle which materially resists any tendency toward turning. It may be made of one or two pieces

Part SM-B-745222 NSN 5310-00-237-6781

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
14218
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

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:

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
194120
UFC:
95100
LTL:
RATING VARIABLE
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7415210000
  • SITC: 69432
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Copper washers including spring washers not threaded

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