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BACB30LU5D19 — SCREW,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

BACB30LU5D19: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT COUNTERSUNK, grip_length: 0.500 INCHES NOMINAL IN, thread_class: 3A A, grip_diameter: 0.326 INCHES NOMINAL IN, head_diameter: 0.637 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-583-5275, 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
BACB30LU5D19
NSN: 5305-01-583-5275
FSC: 5305 — Screws
CAGE: 81205 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFLAT COUNTERSUNK
grip_length0.500 INCHES NOMINAL IN
thread_class3A A
grip_diameter0.326 INCHES NOMINAL IN
head_diameter0.637 INCHES NOMINAL IN
thread_length0.500 INCHES NOMINAL IN
fastener_length0.969 INCHES NOMINAL IN
thread_directionRIGHT-HAND
countersink_angle100.0 DEGREES NOMINAL
internal_drive_styleCROSS RECESS TYPE 1
end_item_identificationAIRCRAFT, AWACS, E-3A A
NSN5305-01-583-5275
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: BACB30LU5D19 · 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: 0.969 INCHES NOMINAL IN
•
THREAD LENGTH: 0.500 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK
•
THREAD DIRECTION: RIGHT-HAND
•
GRIP LENGTH: 0.500 INCHES NOMINAL IN
•
GRIP DIAMETER: 0.326 INCHES NOMINAL IN
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
TECHNICAL CHARACTERISTICS
FASTENER LENGTH0.969 INCHES NOMINAL IN
THREAD LENGTH0.500 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.312 INCHES IN
HEAD STYLEFLAT COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH0.500 INCHES NOMINAL IN
GRIP DIAMETER0.326 INCHES NOMINAL IN
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
COUNTERSINK ANGLE100.0 DEGREES NOMINAL
THREAD CLASS3A A
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 BACB30LU5D19?
BACB30LU5D19 is a SCREW,CLOSE TOLERANCE.
What is the NSN for BACB30LU5D19?
BACB30LU5D19 is cataloged in the U.S. Government catalog under NSN 5305-01-583-5275. 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.