Model: 51-501-27

Recessed Washer

Properties:

Hole Diameter
Between 0.252 inches and 0.260 inches
Outside Diameter
0.531 inches
Recess Diameter
Between 0.334 inches and 0.344 inches
Material Thickness
0.078 inches
Min. Tensile Strength (psi)
125000 pounds per square inch
Hardness Rating
Between 46.0 rockwell c and 50.0 rockwell c
Recess Angle
90.0 degrees
Material
Steel comp 1330 or steel comp 4130
Surface Treatment
Nickel
Surface Treatment Specification
Mil-c-26074, class 1 military specification single treatment response or qq-n-290, class 1, grade c federal specification single treatment response
Style Designator
15 recessed
Style Designator
Recessed
NSN
5310-00-553-3939
Part Number
51-501-27
Description
Washer,recessed
CAGE
1YRX6

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 51-501-27 NSN 5310-00-553-3939

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:
FX
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
194160
UFC:
55210
LTL:
50.0
LCL:
50.0
WCC:
713
TCC:
Z
SHC:
Z
ACC:
Equipment for Aircraft

Pricing & Availability Check

Submit this form for stock availability and pricing.
Part Number:
Quantity:
Email Address:
Phone Number:
Your Name:
Company:



Privacy Policy    Terms & Conditions

How to Order  

Ordering from buyaircraftparts.com

If you would like to order this recessed washer (NSN 5310-00-553-3939) please submit the pricing and availability form above to receive an up to date quote by email. If you agree to the pricing and terms you can e-sign your order online!

We are pleased to have the opportunity to serve you.

Have a Question

Hours: 08:00-18:00 Eastern Standard Time
Phone: +1 470-231-0824
Email: Contact Form »
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

Highest Rated Parts
Recently Purchased Parts
Hot Parts