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1B3256 — PACKING,PREFORMED

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

1B3256: PACKING,PREFORMED.

The PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: SQUARE, grip_length: 1.000 INCHES NOMINAL IN, head_height: 0.625 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 1.500 INCHES MINIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-208-8012, 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
1B3256
NSN: 5306-00-208-8012
NIINs: 002088012, 013993118
FSC: 5306 — Bolts
CAGE: 61653 — BRUNSWICK CORP UNION HARDWARE TECHNETICS DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleSQUARE
grip_length1.000 INCHES NOMINAL IN
head_height0.625 INCHES NOMINAL IN
thread_class2A A
thread_length1.500 INCHES MINIMUM IN
fastener_length2.500 INCHES NOMINAL IN
special_featuresFURNISHED W/ ONE HEX NUT
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
width_between_flats1.062 INCHES NOMINAL IN
nominal_thread_diameter0.625 INCHES IN
NSN5306-00-208-8012
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 1B3256 · 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
•
HEAD HEIGHT: 0.625 INCHES NOMINAL IN
•
FASTENER LENGTH: 2.500 INCHES NOMINAL IN
•
THREAD LENGTH: 1.500 INCHES MINIMUM IN
•
NOMINAL THREAD DIAMETER: 0.625 INCHES IN
•
FEATURES PROVIDED: FINISHED HEAD
•
HEAD STYLE: SQUARE
•
THREAD DIRECTION: RIGHT-HAND
•
GRIP LENGTH: 1.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.625 INCHES NOMINAL IN
FASTENER LENGTH2.500 INCHES NOMINAL IN
THREAD LENGTH1.500 INCHES MINIMUM IN
NOMINAL THREAD DIAMETER0.625 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
HEAD STYLESQUARE
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH1.000 INCHES NOMINAL IN
WIDTH BETWEEN FLATS1.062 INCHES NOMINAL IN
SPECIAL FEATURESFURNISHED W/ ONE HEX NUT
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1B3256?
1B3256 is a PACKING,PREFORMED.
What is the NSN for 1B3256?
1B3256 is cataloged in the U.S. Government catalog under NSN 5306-00-208-8012. 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.