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Technical Data Sheet
PartsTable / COMPONENT / B18.6.1
B18.6.1 ✓ 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 B18.6.1 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-014-9367, 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
B18.6.1
NSN: 5305-00-014-9367
FSC: 5305
CAGE: 80204 — AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED DBA AMERICAN NATIONAL STANDARDS INSTITUTE (USA)
SPECIFICATIONS
Part NumberB18.6.1
NSN5305-00-014-9367
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: B18.6.1 · 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
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
•
FASTENER LENGTH: 2.438 INCHES MINIMUM AND 2.500 INCHES MAXIMUM IN
•
NONMACHINE THREAD STYLE: GIMLET POINT (TYPE A, AB OR BA)
•
COUNTERSINK ANGLE: 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
•
HEAD STYLE: FLAT COUNTERSUNK
•
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND 2C STYLE
•
NONMACHINE NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
HEAD DIAMETER: 0.183 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
FASTENER LENGTH2.438 INCHES MINIMUM AND 2.500 INCHES MAXIMUM IN
NONMACHINE THREAD STYLEGIMLET POINT (TYPE A, AB OR BA)
COUNTERSINK ANGLE80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
HEAD STYLEFLAT COUNTERSUNK
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 2C STYLE
NONMACHINE NOMINAL THREAD DIAMETER0.190 INCHES IN
HEAD DIAMETER0.183 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY 260 OR COPPER ALLOY 268 OR COPPER ALLOY 270 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
ANSI B18.6.1Interchangeable
interchangeable cross-reference
interchangeable
FF-S-111 TY1ST2CInterchangeable
interchangeable cross-reference
interchangeable
MS35492-80Interchangeable
interchangeable cross-reference
interchangeable
MIL-S-971Interchangeable
interchangeable cross-reference
interchangeable
B18.6.1Interchangeable
interchangeable cross-reference
interchangeable
MS35493-266Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B18.6.1?
B18.6.1 is a B18.6.1.
What parts can replace B18.6.1?
There are 20 known substitutes for B18.6.1: ANSI B18.6.1, FF-S-111 TY1ST2C, MS35492-80 and 17 more. Substitute compatibility should be verified for your specific system.
Is B18.6.1 still available?
B18.6.1 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