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DB1864 — BOLT,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

DB1864: BOLT,CLOSE TOLERANCE.

The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: SPLINE EXTENDED WASHER, thread_class: 3A A, fastener_length: 1.000 INCHES NOMINAL IN, nominal_thread_diameter: 0.375 INCHES IN, thread_quantity_per_inch: 24. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-192-5744, 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
DB1864
NSN: 5306-01-192-5744
FSC: 5306 — Bolts
CAGE: Z4660 — ROSEBANK ENGINEERING (AUS)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleSPLINE EXTENDED WASHER
thread_class3A A
fastener_length1.000 INCHES NOMINAL IN
nominal_thread_diameter0.375 INCHES IN
thread_quantity_per_inch24
thread_series_designatorUNF
NSN5306-01-192-5744
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: DB1864 · 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
•
FASTENER LENGTH: 1.000 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
HEAD STYLE: SPLINE EXTENDED WASHER
•
THREAD CLASS: 3A A
•
THREAD QUANTITY PER INCH: 24
•
MATERIAL: STEEL OVERALL
•
THREAD SERIES DESIGNATOR: UNF
TECHNICAL CHARACTERISTICS
FASTENER LENGTH1.000 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.375 INCHES IN
HEAD STYLESPLINE EXTENDED WASHER
THREAD CLASS3A A
THREAD QUANTITY PER INCH24
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORUNF
SUBSTITUTES & CROSS-REFERENCES 2
10116134Reference document
Same NSN cross-reference
Reference document — Informative reference only
2607641Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is DB1864?
DB1864 is a BOLT,CLOSE TOLERANCE.
What parts can replace DB1864?
There are 2 known substitutes for DB1864: 10116134, 2607641. Substitute compatibility should be verified for your specific system.
What is the NSN for DB1864?
DB1864 is cataloged in the U.S. Government catalog under NSN 5306-01-192-5744. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.