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BACB30NF9D72X — BOLT,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

BACB30NF9D72X: BOLT,CLOSE TOLERANCE.

The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4340 OR STEEL COMP 8740 OVERALL, head_style: DISHED HEXAGON, grip_length: 4.490 INCHES MINIMUM AND 4.510 INCHES MAXIMUM IN, head_height: 0.281 INCHES MINIMUM AND 0.296 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.5605 INCHES MINIMUM AND 0.5615 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-535-0449, 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
BACB30NF9D72X
NSN: 5306-01-535-0449
FSC: 5306 — Bolts
CAGE: 81205 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL COMP 4340 OR STEEL COMP 8740 OVERALL
head_styleDISHED HEXAGON
grip_length4.490 INCHES MINIMUM AND 4.510 INCHES MAXIMUM IN
head_height0.281 INCHES MINIMUM AND 0.296 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.5605 INCHES MINIMUM AND 0.5615 INCHES MAXIMUM IN
thread_length0.605 INCHES NOMINAL IN
surface_finish32.0 MICROINCHES BEARING SURFACE OF HEAD
fastener_length5.090 INCHES MINIMUM AND 5.120 INCHES MAXIMUM IN
special_features0.0156 OVERSIZE
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
NSN5306-01-535-0449
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: BACB30NF9D72X · 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
•
SURFACE FINISH: 32.0 MICROINCHES THREADS
•
HEAD HEIGHT: 0.281 INCHES MINIMUM AND 0.296 INCHES MAXIMUM IN
•
FASTENER LENGTH: 5.090 INCHES MINIMUM AND 5.120 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 CL 2 TY 2 FED SPEC ALL TREATMENT RESPONSES OVERALL
•
THREAD LENGTH: 0.605 INCHES NOMINAL IN
•
SHANK UNTHREADED HOLE DIAMETER: 0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM FIRST HOLE IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES THREADS
SURFACE FINISH32.0 MICROINCHES GRIP
SURFACE FINISH32.0 MICROINCHES BEARING SURFACE OF HEAD
HEAD HEIGHT0.281 INCHES MINIMUM AND 0.296 INCHES MAXIMUM IN
FASTENER LENGTH5.090 INCHES MINIMUM AND 5.120 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 CL 2 TY 2 FED SPEC ALL TREATMENT RESPONSES OVERALL
THREAD LENGTH0.605 INCHES NOMINAL IN
SHANK UNTHREADED HOLE DIAMETER0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM FIRST HOLE IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR AMS 6322 ASSN STD 2ND MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.562 INCHES IN
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is BACB30NF9D72X?
BACB30NF9D72X is a BOLT,CLOSE TOLERANCE.
What is the NSN for BACB30NF9D72X?
BACB30NF9D72X is cataloged in the U.S. Government catalog under NSN 5306-01-535-0449. 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.