Model: B31-15-1095

Recessed Washer

Special Features:

Unit packagequantity type 2, unit package type, bag

Properties:

Hole Diameter
Between 0.315 inches and 0.321 inches
Outside Diameter
0.750 inches
Material Thickness
0.125 inches
Top Recess Diameter
0.343 inches
Bottom Recess Angle
82.0 degrees
Top Recess Angle
82.0 degrees
Bottom Recess Diameter
0.343 inches
Heat Treatment
Annealed
Material
Steel comp 303 or steel comp 416
Material Specification
Astm a582 assn standard all material responses
Style Designator
Recessed both sides
Reference Number Differentiating Characteristics
As differentiated by packaging
NSN
5310-00-513-9955
Part Number
B31-15-1095
Description
Washer,recessed
CAGE
81361

A washer of any peripheral shape having a centrally located hole. Both bearing surfaces are parallel and flat, but one or both of the bearing surfaces must be broken by a counterbore, countersink, or similarly shaped recess. The thickness must not exceed 25 per cent of the outside diameter or the largest outside dimension. The maximum limit of the tolerance or range applied to the thickness and/or largest outside dimension must be used to determine compliance. Excludes washer, concave, retainer, packing, and thrust type washers. See also spacer, sleeve; and spacer, stepped.

Part B31-15-1095 NSN 5310-00-513-9955

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
15933
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:
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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