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21218D — Technical Data Sheet

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— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The INSULATOR,PLATE is a the manufacturer industrial component. Key specifications include material: GLASS FIBER AND PLASTIC EPOXY OVERALL, overall_width: 3.600 INCHES NOMINAL IN, overall_length: 5.850 INCHES NOMINAL IN, style_designator: FLAT, RECTANGULAR, first_hole_spacing: 3.050 INCHES NOMINAL IN, first_hole_diameter: 0.312 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5970-01-098-6156, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
21218D
NSN: 5970-01-098-6156
FSC: 5970
CAGE: 30377 — SMITHS AEROSPACE, INC., ELECTRONIC SYSTEMS-GRAND RAPIDS (USA)
SPECIFICATIONS
materialGLASS FIBER AND PLASTIC EPOXY OVERALL
overall_width3.600 INCHES NOMINAL IN
overall_length5.850 INCHES NOMINAL IN
style_designatorFLAT, RECTANGULAR
first_hole_spacing3.050 INCHES NOMINAL IN
first_hole_diameter0.312 INCHES NOMINAL IN
second_hole_spacing1.550 INCHES NOMINAL IN
material_document_and_classificationMIL-P-18177, TYPE GEE MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5970-01-098-6156
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available INSULATOR,PLATE TITLE COMPONENT PN 21218D MFR INSULATOR,PLATE
KEY FEATURES
•
FIRST HOLE DIAMETER: 0.312 INCHES NOMINAL IN
•
MATERIAL: GLASS FIBER AND PLASTIC EPOXY OVERALL
•
STYLE DESIGNATOR: FLAT, RECTANGULAR
•
FIRST HOLE SPACING: 3.050 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-P-18177, TYPE GEE MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
SECOND HOLE SPACING: 1.550 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FIRST HOLE DIAMETER0.312 INCHES NOMINAL IN
MATERIALGLASS FIBER AND PLASTIC EPOXY OVERALL
STYLE DESIGNATORFLAT, RECTANGULAR
FIRST HOLE SPACING3.050 INCHES NOMINAL IN
OVERALL WIDTH3.600 INCHES NOMINAL IN
OVERALL LENGTH5.850 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-P-18177, TYPE GEE MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
SECOND HOLE SPACING1.550 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
21218InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
500038InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
708206InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
21351InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
50A4412InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
15486-1THRU27InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21218D?
21218D is a INSULATOR,PLATE.
What parts can replace 21218D?
There are 14 known substitutes for 21218D: 21218, 500038, 708206 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21218D?
21218D is cataloged in the Federal Logistics Information System under NSN 5970-01-098-6156. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: October 2026