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Technical Data Sheet
PartsTable / COMPONENT / ASME B18.6.4
ASME B18.6.4 ✓ 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 ASME B18.6.4 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-637-4522, 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
ASME B18.6.4
NSN: 5305-00-637-4522
FSC: 5305
CAGE: 05047 — THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS (USA)
SPECIFICATIONS
Part NumberASME B18.6.4
NSN5305-00-637-4522
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: ASME B18.6.4 · 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
•
NONMACHINE NOMINAL THREAD DIAMETER: 0.151 INCHES IN
•
NONMACHINE THREAD STYLE: GIMLET POINT (TYPE A, AB OR BA)
•
HEAD STYLE: PAN NO. 2
•
HEAD HEIGHT: 0.079 INCHES MINIMUM AND 0.089 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM-B633 FED SPEC 1ST TREATMENT RESPONSE OVERALL
•
FEATURES PROVIDED: CASEHARDENED
•
SURFACE TREATMENT: ZINC OVERALL
•
NONDEFINITIVE SPEC/STD DATA: A TYPE
TECHNICAL CHARACTERISTICS (FLIS)
NONMACHINE NOMINAL THREAD DIAMETER0.151 INCHES IN
NONMACHINE THREAD STYLEGIMLET POINT (TYPE A, AB OR BA)
HEAD STYLEPAN NO. 2
HEAD HEIGHT0.079 INCHES MINIMUM AND 0.089 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM-B633 FED SPEC 1ST TREATMENT RESPONSE OVERALL
FEATURES PROVIDEDCASEHARDENED
SURFACE TREATMENTZINC OVERALL
NONDEFINITIVE SPEC/STD DATAA TYPE
MATERIALSTEEL OVERALL
INTERNAL DRIVE STYLESLOT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
AMSE-B18.6.4Interchangeable
interchangeable cross-reference
interchangeable
FF-S-107 TYAInterchangeable
interchangeable cross-reference
interchangeable
ANSI B18.6.4Interchangeable
interchangeable cross-reference
interchangeable
MS24617-46Interchangeable
interchangeable cross-reference
interchangeable
80096Interchangeable
interchangeable cross-reference
interchangeable
FF-S-107 TYABST PAN RECESSEDInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ASME B18.6.4?
ASME B18.6.4 is a ASME B18.6.4.
What parts can replace ASME B18.6.4?
There are 26 known substitutes for ASME B18.6.4: AMSE-B18.6.4, FF-S-107 TYA, ANSI B18.6.4 and 23 more. Substitute compatibility should be verified for your specific system.
Is ASME B18.6.4 still available?
ASME B18.6.4 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: July 2026