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PBF1668-3-3 — SCREW,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

PBF1668-3-3: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: TITANIUM ALLOY UNS R56400 OVERALL, head_style: FLAT COUNTERSUNK, grip_length: 0.188 INCHES NOMINAL IN, point_style: FLAT, point_length: 0.108 INCHES NOMINAL IN, thread_class: 3A A. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-657-3919, 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
PBF1668-3-3
NSN: 5305-01-657-3919
FSC: 5305 — Screws
CAGE: 27624 — SPS TECHNOLOGIES LLC DBA PB FASTENERS DIV PB FASTENERS (USA)
SPECIFICATIONS
materialTITANIUM ALLOY UNS R56400 OVERALL
head_styleFLAT COUNTERSUNK
grip_length0.188 INCHES NOMINAL IN
point_styleFLAT
point_length0.108 INCHES NOMINAL IN
thread_class3A A
grip_diameter0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN
head_diameter0.3206 INCHES NOMINAL IN
thread_length0.530 INCHES NOMINAL IN
surface_finish32.0 MICROINCHES THREADS
fastener_length0.718 INCHES NOMINAL IN
special_features95 KSI MIN ULTIMATE SHEAR
NSN5305-01-657-3919
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: PBF1668-3-3 · 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
•
POINT LENGTH: 0.108 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.718 INCHES NOMINAL IN
•
THREAD LENGTH: 0.530 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
POINT CHAMFER ANGLE: 25.0 DEGREES MINIMUM AND 35.0 DEGREES MAXIMUM
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES THREADS
SURFACE FINISH32.0 MICROINCHES GRIP
SURFACE FINISH32.0 MICROINCHES BEARING SURFACE OF HEAD
POINT LENGTH0.108 INCHES NOMINAL IN
FASTENER LENGTH0.718 INCHES NOMINAL IN
THREAD LENGTH0.530 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
POINT CHAMFER ANGLE25.0 DEGREES MINIMUM AND 35.0 DEGREES MAXIMUM
SINGLE SHEAR STRENGTHERR-060
NOMINAL THREAD DIAMETER0.181 INCHES IN
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES 1
3D0264-3-3Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is PBF1668-3-3?
PBF1668-3-3 is a SCREW,CLOSE TOLERANCE.
What parts can replace PBF1668-3-3?
There is 1 known substitute for PBF1668-3-3: 3D0264-3-3. Substitute compatibility should be verified for your specific system.
What is the NSN for PBF1668-3-3?
PBF1668-3-3 is cataloged in the U.S. Government catalog under NSN 5305-01-657-3919. 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.