Model: 6-55097-16

Recessed Washer

Special Features:

0.075 in. Min 0.080 in. Max radius opposite side recessed angle and chamfer 0.030 in. Min 0.040 in. Max by 45 degrees bottom outside corner

Properties:

Hole Diameter

Between 0.875 inches and 0.882 inches

Outside Diameter

Between 1.600 inches and 1.620 inches

Recess Diameter

Between 1.080 inches and 1.086 inches

Material Thickness

Between 0.280 inches and 0.320 inches

Min. Tensile Strength (psi)

150000 pounds per square inch

Recess Angle

90.0 degrees

Surface Finish

63.0 microinches counterbore wall

Surface Finish

63.0 microinches inner

Material

Steel comp 4140 or steel comp 8740 or steel comp e4340

Material Specification

Mil-s-5626, cond d military specification 1st material response or mil-s-6049, cond d military specification 2nd material response or mil-s-5000, cond d military specification 3rd material response

Style Designator

15 recessed

NSN

5310-01-111-5957

Part Number

6-55097-16

Description

Washer,recessed

CAGE

17765

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 6-55097-16 NSN 5310-01-111-5957

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

15933

FIIG:

A022B0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

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:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

194160

UFC:

55210

LTL:

50.0

LCL:

WCC:

713

TCC:

SHC:

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