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2643353 — BOLT,EYE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

2643353: BOLT,EYE.

The BOLT,EYE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OVERALL, shank_length: 3.097 INCHES NOMINAL3.097 INCHES NOMINAL IN, thread_class: 2A2A, thread_length: 1.625 INCHES NOMINAL1.625 INCHES NOMINAL IN, overall_length: 3.405 INCHES NOMINAL3.405 INCHES NOMINAL IN, hardness_rating: 34.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL39.0 ROCKWELL C MAXIMUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-144-3078, 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
2643353
NSN: 5306-01-144-3078
FSC: 5306 — Bolts
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OVERALL
shank_length3.097 INCHES NOMINAL3.097 INCHES NOMINAL IN
thread_class2A2A
thread_length1.625 INCHES NOMINAL1.625 INCHES NOMINAL IN
overall_length3.405 INCHES NOMINAL3.405 INCHES NOMINAL IN
hardness_rating34.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL39.0 ROCKWELL C MAXIMUM OVERALL
style_designatorROUND, CLOSEDROUND, CLOSED
thread_directionRIGHT-HANDRIGHT-HAND
eye_stock_diameter0.339 INCHES MINIMUM AND 0.339 INCHES MINIMUM AND 0.449 INCHES MAXIMUM0.449 INCHES MAXIMUM IN
eye_inside_diameter0.316 INCHES MINIMUM AND 0.316 INCHES MINIMUM AND 0.319 INCHES MAXIMUM0.319 INCHES MAXIMUM IN
nominal_thread_diameter0.312 INCHES0.312 INCHES IN
minimum_tensile_strength160000 POUNDS PER SQUARE INCH160000 POUNDS PER SQUARE INCH LBS
NSN5306-01-144-3078
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 2643353 · 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
•
EYE STOCK DIAMETER: 0.339 INCHES MINIMUM AND 0.339 INCHES MINIMUM AND 0.449 INCHES MAXIMUM0.449 INCHES MAXIMUM IN
•
THREAD LENGTH: 1.625 INCHES NOMINAL1.625 INCHES NOMINAL IN
•
HARDNESS RATING: 34.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL39.0 ROCKWELL C MAXIMUM OVERALL
•
SHANK LENGTH: 3.097 INCHES NOMINAL3.097 INCHES NOMINAL IN
•
STYLE DESIGNATOR: ROUND, CLOSEDROUND, CLOSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALLMIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.312 INCHES0.312 INCHES IN
TECHNICAL CHARACTERISTICS
EYE STOCK DIAMETER0.339 INCHES MINIMUM AND 0.339 INCHES MINIMUM AND 0.449 INCHES MAXIMUM0.449 INCHES MAXIMUM IN
THREAD LENGTH1.625 INCHES NOMINAL1.625 INCHES NOMINAL IN
HARDNESS RATING34.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL39.0 ROCKWELL C MAXIMUM OVERALL
SHANK LENGTH3.097 INCHES NOMINAL3.097 INCHES NOMINAL IN
STYLE DESIGNATORROUND, CLOSEDROUND, CLOSED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALLMIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH3.405 INCHES NOMINAL3.405 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.312 INCHES0.312 INCHES IN
THREAD DIRECTIONRIGHT-HANDRIGHT-HAND
DISTANCE FROM CENTER OF EYE TO SHANK END3.125 INCHES NOMINAL3.125 INCHES NOMINAL 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 2643353?
2643353 is a BOLT,EYE.
What is the NSN for 2643353?
2643353 is cataloged in the U.S. Government catalog under NSN 5306-01-144-3078. 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.