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Technical Data Sheet
PartsTable / COMPONENT / 35218-1
35218-1 ✓ Verified by PartsTable
Legrand · 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 POPPET is a Legrand industrial component. Key specifications include special_features: DOOR ASSEMBLY, end_item_identification: MK 86 NAVIGATION SYSTEM FOR MH-53 HELICOPTER. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-558-9993, 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
35218-1
NSN: 5306-00-558-9993
FSC: 5306
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
special_featuresDOOR ASSEMBLY
end_item_identificationMK 86 NAVIGATION SYSTEM FOR MH-53 HELICOPTER
NSN5306-00-558-9993
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 35218-1 · Legrand ⚠ 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
•
INTERNAL DRIVE STYLE: HEXAGON
•
MINIMUM TENSILE STRENGTH: 160000 POUNDS PER SQUARE INCH LBS
•
HEAD HEIGHT: 1.000 INCHES NOMINAL IN
•
THREAD CLASS: 3A A
•
MATERIAL: STEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 6150 OR STEEL COMP 8735 OR STEEL COMP 8740 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-8503 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 5TH MATERIAL RESPONSE OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: LAC0491 FSCM 98897 MFR REF SINGLE TREATMENT RESPONSE AND 170 FSCM 98897 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
SURFACE TREATMENT: CADMIUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
INTERNAL DRIVE STYLEHEXAGON
MINIMUM TENSILE STRENGTH160000 POUNDS PER SQUARE INCH LBS
HEAD HEIGHT1.000 INCHES NOMINAL IN
THREAD CLASS3A A
MATERIALSTEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 6150 OR STEEL COMP 8735 OR STEEL COMP 8740 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-8503 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 5TH MATERIAL RESPONSE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONLAC0491 FSCM 98897 MFR REF SINGLE TREATMENT RESPONSE AND 170 FSCM 98897 MFR REF SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM OVERALL
THREAD SERIES DESIGNATORUNS
NOMINAL THREAD DIAMETER1.000 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
352181Interchangeable
interchangeable cross-reference
interchangeable
352181-1Interchangeable
interchangeable cross-reference
interchangeable
32653Interchangeable
interchangeable cross-reference
interchangeable
32653-1Interchangeable
interchangeable cross-reference
interchangeable
35218Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 35218-1?
35218-1 is a POPPET manufactured by Legrand.
What parts can replace 35218-1?
There are 5 known substitutes for 35218-1: 352181, 352181-1, 32653 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 35218-1?
35218-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-558-9993. 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.
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Last verified: July 2026