973-674-1700Standoffs, Spacers, Captive, Swage, Male Female Standoffs, Jack Screws, Male Male Standoffs, Handles, Thumb Screws, Thumbscrews, Shoulder Screws, Insulating Washers, Electronic Hardware.

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Insulating Washers
Technical / Engineering Data
 
Insulating Washers        Standard e-Catalog
Length of Shoulder (for shoulder washer only)
Choose & write down your 
LENGTH OF SHOULDER  Code - Go to Next Step 
Order Code Dimension E
(See diagram in insulating washers charts)
A .015
B .025
C .040
E .058
F .085
G .120
H .182
J .215
K .245
M .300
R .360
S .425
V .490
 
Material Selection

   MATERIALS

Choose & write down your
MATERIAL Code- Go Back to

 
SPECIFICATIONS

   Nylon

N

 Mil - P - 17091B Type 1

   Teflon®

T

 Mil - P - 19468A

   Lexan®

L

 LP- 393 A

   Ultem®

U

 GE 1000 Resins

   Delrin®

D

 LP- 392 A

   Phenolic

P

 MIL- I - 24768 / 15

    RoHS Compliance Statement  I  R.E.A.C.H. Statement  I  DFARS  I  WEEE
 
Properties for Non- Metallic Materials

Properties

Phenolic Teflon® Nylon Lexan®

Delrin®

Ultem®

Flammability Rating V-1 UL HB UL 94V-2 V-O UL94HB V-O
Water Absorption
(%) 24 hrs.
0.6 - 0.7 .02 1.5 0.15 0.25 0.25
Dielectric Constant
(60 cycles)
5.2 - 5.3 2.1 10 2.9 3.7 3.15
Dielectric Strength
1/8 thickness (v/mil)
350 400 300- 400 380 500 N/A
Arc Resistance (sec) 100 200 140 10 129 120
Tensile Strength (psi) 6,500- 7,000 2,700- 3,100 11,200- 16,500 9,000 10,400 16,500
Heat Resistance (continuous degrees F) 250- 275 550 250 270 250 340
Compression Strength (psi) 201- 235 700- 1,200 4,000 - 11,000 12,500 18,000 22,000
 
Tolerances  (for shoulder washer only)
A Major Diameter ± .005
B Shank Diameter + .000 / - .005
C Thickness of Head ± .005
D Inside Diameter + .006 / - .000
E Length of Shoulder ± .005
L Overall Length +.010/ - .005
 
Tolerances  (for flat washer only)
A Major Diameter + .010 / - .005
C Thickness .015  through  .063 ± .003
.064  through  .091 ± .006
.092 up  ± .009
D Inside Diameter + .010 / -.000
For Modified Parts or Engineering Assistance:
Unicorp offers your firm engineering and design services for customized or
modified parts at no additional charge. Please call our Engineering Department.
UNICORP, MFR. IDENT. Code No. 04729

Phone:  973-674-1700       Toll Free:  1-800-526-1389       Fax:  973-674-3803

UNICORP is a worldwide leader in manufacturing stock and custom
electronic hardware, handles and precision fasteners used by leading companies
in nearly every industry since 1971.


Unicorp,  291 Cleveland St., Orange, New Jersey  07050  USA

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