1- 800- 526-1389  Standoffs, Spacers, Captive, Swage, Male to Female Standoffs, Jack Screws, Male to Male Standoffs, Handles, Thumb Screws, Thumbscrews, Shoulder

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Metric Insulating Washer
Technical / Engineering Data
Metric insulating Washers       Metric e-Catalog
Length of Shoulder
(For Shoulder Washers Only)
Choose & write down your
LENGTH OF SHOULDER code
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Dimension E

Order Code Dimension E
(see diagram in
insulating washers charts)

A

1mm

.039

B

2mm

.078

C

3mm

.118

D

4mm

.157

E

5mm

.196

F

6mm

.236

G

7mm

.275

H

8mm

.315

J

9mm

.354

K

10mm

.393

M

11mm

.433

R

12mm

.472

S

13mm

.511
Material Selection

      MATERIALS

 Choose & write down your
MATERIAL code
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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    DFARS    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 Washers Only)

A

Major Diameter

± 0.15

B

Shank Diameter

+ 0.00 / - 0.15

C

Thickness of Head

± 0.15

D

Inside Diameter

+ 0.17 / - 0.00

E

Length of Shoulder

± 0.15

L

Overall Length

+ 0.26 / - 0.15
Tolerances
(For Flat Washers Only)

A

Major Diameter

 + 0.26 / - 0.15

C

Thickness

.4  through 1.6  ±  .16
1.7  through  2.4  ±  .23

D

Inside Diameter

+ .26 / - .00

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