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BACB30NF12D38 — BOLT,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

BACB30NF12D38: BOLT,CLOSE TOLERANCE.

The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL COMP E4340 OR STEEL COMP 8740 OVERALL, head_style: DISHED HEXAGON, grip_length: 2.365 INCHES MINIMUM AND 2.385 INCHES MAXIMUM IN, head_height: 0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.7480 INCHES MINIMUM AND 0.7490 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-358-2728, 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
BACB30NF12D38
NSN: 5306-01-358-2728
FSC: 5306 — Bolts
CAGE: 81205 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL COMP E4340 OR STEEL COMP 8740 OVERALL
head_styleDISHED HEXAGON
grip_length2.365 INCHES MINIMUM AND 2.385 INCHES MAXIMUM IN
head_height0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.7480 INCHES MINIMUM AND 0.7490 INCHES MAXIMUM IN
thread_length0.673 INCHES NOMINAL IN
surface_finish32.0 MICROINCHES THREADS
fastener_length3.033 INCHES MINIMUM AND 3.063 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
width_between_flats1.052 INCHES MINIMUM AND 1.064 INCHES MAXIMUM IN
NSN5306-01-358-2728
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: BACB30NF12D38 · 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: 0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
•
FASTENER LENGTH: 3.033 INCHES MINIMUM AND 3.063 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.673 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 HEIGHT0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
FASTENER LENGTH3.033 INCHES MINIMUM AND 3.063 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.673 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 AMS6322 ASSN STD 2ND MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.750 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 BACB30NF12D38?
BACB30NF12D38 is a BOLT,CLOSE TOLERANCE.
What is the NSN for BACB30NF12D38?
BACB30NF12D38 is cataloged in the U.S. Government catalog under NSN 5306-01-358-2728. 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.