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Technical Data Sheet
PartsTable / COMPONENT / 306418
306418 ✓ 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 SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include end_item_identification: 5865014889308, DETECTING SYSTEM, COUNTERMEASURES., part_name_assigned_by_controlling_agency: UPPER BELT KIT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-071-2242, 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
306418
NSN: 5305-00-071-2242
FSC: 5305
CAGE: 32195 — OUTBOARD MARINE CORP JOHNSON MOTORS DIV (USA)
SPECIFICATIONS
end_item_identification5865014889308, DETECTING SYSTEM, COUNTERMEASURES.
part_name_assigned_by_controlling_agencyUPPER BELT KIT
NSN5305-00-071-2242
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 306418 · 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
•
HARDNESS RATING: 23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
•
MINIMUM YIELD STRENGTH: 85 POUNDS PER SQUARE INCH LBS
•
MATERIAL: STEEL OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE GR 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
HEAD HEIGHT: 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
WIDTH BETWEEN FLATS: 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
HARDNESS RATING23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM YIELD STRENGTH85 POUNDS PER SQUARE INCH LBS
MATERIALSTEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONSAE GR 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
HEAD HEIGHT0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
WIDTH BETWEEN FLATS0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.250 INCHES IN
MINIMUM TENSILE STRENGTH120 POUNDS PER SQUARE INCH LBS
FASTENER LENGTH1.125 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
80028Interchangeable
interchangeable cross-reference
interchangeable
SCD80028Interchangeable
interchangeable cross-reference
interchangeable
66345AXInterchangeable
interchangeable cross-reference
interchangeable
5305PL2184018Interchangeable
interchangeable cross-reference
interchangeable
17S57651-5659Interchangeable
interchangeable cross-reference
interchangeable
90-426-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 306418?
306418 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace 306418?
There are 21 known substitutes for 306418: 80028, SCD80028, 66345AX and 18 more. Substitute compatibility should be verified for your specific system.
Is 306418 still available?
306418 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