Model: 25906

Flat Washer

Properties:

Cross Sectional Shape
Rectangular
Hole Diameter
Between 0.139 inches and 0.159 inches
Edge Shape
Round
Center Hole Shape
1 round
Center Hole Shape
Round
Thickness
Between 0.022 inches and 0.042 inches
Overall Diameter
Between 0.370 inches and 0.395 inches
End Application
W/s: support equipment, b-52 aircraft; airborne mobile dir air spt ctl (2id), (02m jul83) (an/uyq-3a); fire pumps; engine, aircraft tf33-pw-102 (c-135e, ec-135h/k/p); aircraft, thunderbolt ii, a-10; aircraft, (ac-130h, mc130h, ec-130e, hc-130); test consoles, mini-sace; support equipment, b-1 aircraft; trainer, b-1b aircraft; missile, advanced medium range, air-to-air (amraam)/aim120a
Material
Steel
Material Specification
Mil-s-7952 military specification single material response or qq-s-698 federal specification single material response
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, cl 3 federal specification single treatment response
Nondefinitive Specification/std Data
A type and 2 grade and a class
NSN
5310-00-167-0816
Part Number
25906
Description
Washer,flat
CAGE
99167

A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use shim. For items fabricated from ceramic or electrically rated materials by specification or industry standards use insulator (1), washer. Excludes disk, valve, graphite impregnated and lubricated items.

Part 25906 NSN 5310-00-167-0816

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
13393
FIIG:
A022B0
Concept No.:
1
App. Key:
B
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:
A
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:
Q

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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