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Technical Data Sheet
PartsTable / COMPONENT / 1N218
1N218 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The SEMICONDUCTOR DEVICE,DIODE is a the manufacturer industrial component. Key specifications include material: SILICON SEMICONDUCTOR, ring_style: INTERNAL, usage_design: INTERNAL, overall_length: 0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN, major_thickness: 0.078 INCHES NOMINAL IN, mounting_method: TERMINAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-205-6674, 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
1N218
NSN: 5325-00-205-6674
FSC: 5325
CAGE: 72800 — EATON CORP ENGINEERED FASTENERS DIV (USA)
SPECIFICATIONS
materialSILICON SEMICONDUCTOR
ring_styleINTERNAL
usage_designINTERNAL
overall_length0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN
major_thickness0.078 INCHES NOMINAL IN
mounting_methodTERMINAL
terminal_length1.125 INCHES NOMINAL IN
outside_diameter2.415 INCHES NOMINAL IN
overall_diameter0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
features_providedHERMETICALLY SEALED CASE
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
NSN5325-00-205-6674
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 1N218 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
MATERIAL HARDNESS RATING: 47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
•
MATERIAL: STEEL
•
NONDEFINITIVE SPEC/STD DATA: MS16625-218 REFERENCE NUMBER
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD NO. 66 AISI C1066 THRU C1090 FED STD SINGLE MATERIAL RESPONSE OR SAE 1070 THRU 1090 ASSN STD SINGLE MATERIAL RESPONSE
•
USAGE DESIGN: INTERNAL
•
MAJOR THICKNESS: 0.078 INCHES NOMINAL IN
•
RING STYLE: INTERNAL
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
MATERIAL HARDNESS RATING47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
MATERIALSTEEL
NONDEFINITIVE SPEC/STD DATAMS16625-218 REFERENCE NUMBER
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD NO. 66 AISI C1066 THRU C1090 FED STD SINGLE MATERIAL RESPONSE OR SAE 1070 THRU 1090 ASSN STD SINGLE MATERIAL RESPONSE
USAGE DESIGNINTERNAL
MAJOR THICKNESS0.078 INCHES NOMINAL IN
RING STYLEINTERNAL
OUTSIDE DIAMETER2.415 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
RRN-218Interchangeable
interchangeable cross-reference
interchangeable
10658290Interchangeable
interchangeable cross-reference
interchangeable
1N218Interchangeable
interchangeable cross-reference
interchangeable
614174-2REVAInterchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-21248Interchangeable
interchangeable cross-reference
interchangeable
MIL-R-16417Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1N218?
1N218 is a SEMICONDUCTOR DEVICE,DIODE.
What parts can replace 1N218?
There are 18 known substitutes for 1N218: RRN-218, 10658290, 1N218 and 15 more. Substitute compatibility should be verified for your specific system.
Is 1N218 still available?
1N218 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026