Model: 08M31

Spring Tension Washer

Properties:

Hole Diameter
Between 0.162 inches and 0.182 inches
Outside Diameter
Between 0.396 inches and 0.416 inches
Overall Height
Between 0.030 inches and 0.050 inches
Material Thickness
Between 0.021 inches and 0.041 inches
Hardness Rating
Between 47.0 rockwell c and 50.0 rockwell c
Part Name Assigned By Controlling Agency
Navy special project
Material
Steel comp 1095
Material Specification
Sae assn standard single material response
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, cl 2 federal specification single treatment response
Style Designator
Spring tension
NSN
5310-00-959-6881
Part Number
08M31
Description
Washer,spring Tension
CAGE
23650

A bent spring metal washer with a centrally located hole. It is designed to exert pressure axially when assembled in place.

Part 08M31 NSN 5310-00-959-6881

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
15938
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:
--
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:
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: 7318210000
  • SITC: 69422
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Spring washers and other lock washers, iron or steel

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