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Technical Data Sheet
PartsTable / COMPONENT / 1/2-UNC X 1,18-8 STAINLESS
1/2-UNC X 1,18-8 STAINLESS ✓ 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 1/2-UNC X 1,18-8 STAINLESS is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-646-7389, 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
1/2-UNC X 1,18-8 STAINLESS
NSN: 5305-00-646-7389
FSC: 5305
CAGE: 1N109 — COAST INDUSTRIAL SUPPLY CO INC (USA)
SPECIFICATIONS
Part Number1/2-UNC X 1,18-8 STAINLESS
NSN5305-00-646-7389
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 1/2-UNC X 1,18-8 STAINLESS · 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
•
THREAD QUANTITY PER INCH: 13
•
MATERIAL: STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OVERALL
•
MINIMUM TENSILE STRENGTH: 80000 POUNDS PER SQUARE INCH LBS
•
WIDTH BETWEEN FLATS: 0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
•
HEAD STYLE: HEXAGON
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
THREAD CLASS: 2A A
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH13
MATERIALSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OVERALL
MINIMUM TENSILE STRENGTH80000 POUNDS PER SQUARE INCH LBS
WIDTH BETWEEN FLATS0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
HEAD STYLEHEXAGON
NOMINAL THREAD DIAMETER0.500 INCHES IN
THREAD CLASS2A A
THREAD LENGTH1.000 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
F505Interchangeable
interchangeable cross-reference
interchangeable
100001-1025Interchangeable
interchangeable cross-reference
interchangeable
WEE10Interchangeable
interchangeable cross-reference
interchangeable
402C-5Interchangeable
interchangeable cross-reference
interchangeable
B94.19 TABLE 29Interchangeable
interchangeable cross-reference
interchangeable
505Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1/2-UNC X 1,18-8 STAINLESS?
1/2-UNC X 1,18-8 STAINLESS is a 1/2-UNC X 1,18-8 STAINLESS.
What parts can replace 1/2-UNC X 1,18-8 STAINLESS?
There are 23 known substitutes for 1/2-UNC X 1,18-8 STAINLESS: F505, 100001-1025, WEE10 and 20 more. Substitute compatibility should be verified for your specific system.
Is 1/2-UNC X 1,18-8 STAINLESS still available?
1/2-UNC X 1,18-8 STAINLESS 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