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PBF1478-5-14 — BOLT,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

PBF1478-5-14: BOLT,CLOSE TOLERANCE.

The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 718 OVERALL, head_style: DOUBLE HEXAGON W/HOLE, grip_length: 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN, head_height: 0.338 INCHES MINIMUM AND 0.358 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-330-9785, 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
PBF1478-5-14
NSN: 5306-01-330-9785
FSC: 5306 — Bolts
CAGE: 27624 — SPS TECHNOLOGIES LLC DBA PB FASTENERS DIV PB FASTENERS (USA)
SPECIFICATIONS
materialNICKEL ALLOY 718 OVERALL
head_styleDOUBLE HEXAGON W/HOLE
grip_length0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN
head_height0.338 INCHES MINIMUM AND 0.358 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN
thread_length0.480 INCHES NOMINAL IN
fastener_length1.340 INCHES MINIMUM AND 1.370 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_between_flats0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
extended_washer_diameter0.521 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
NSN5306-01-330-9785
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: PBF1478-5-14 · 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
•
EXTENDED WASHER THICKNESS: 0.082 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.338 INCHES MINIMUM AND 0.358 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.340 INCHES MINIMUM AND 1.370 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
EXTENDED WASHER DIAMETER: 0.521 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.480 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
HEAD STYLE: DOUBLE HEXAGON W/HOLE
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.082 INCHES NOMINAL IN
HEAD HEIGHT0.338 INCHES MINIMUM AND 0.358 INCHES MAXIMUM IN
FASTENER LENGTH1.340 INCHES MINIMUM AND 1.370 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
EXTENDED WASHER DIAMETER0.521 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
THREAD LENGTH0.480 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
HEAD STYLEDOUBLE HEXAGON W/HOLE
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM 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 1
GB511GF5-14Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is PBF1478-5-14?
PBF1478-5-14 is a BOLT,CLOSE TOLERANCE.
What parts can replace PBF1478-5-14?
There is 1 known substitute for PBF1478-5-14: GB511GF5-14. Substitute compatibility should be verified for your specific system.
What is the NSN for PBF1478-5-14?
PBF1478-5-14 is cataloged in the U.S. Government catalog under NSN 5306-01-330-9785. 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.