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81328634 — BOLT,EYE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

81328634: BOLT,EYE.

The BOLT,EYE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1022 OR STEEL COMP 8620 OVERALL, shank_length: 2.531 INCHES NOMINAL IN, thread_class: 3A A, thread_length: 1.250 INCHES MINIMUM IN, overall_length: 4.594 INCHES NOMINAL IN, style_designator: ROUND, CLOSED. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-206-0772, 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
81328634
NSN: 5306-00-206-0772
FSC: 5306 — Bolts
CAGE: 82796 — COLTEC INDUSTRIES INC. DBA FAIRBANKS MORSE ENGINE DIV FAIRBANKS MORSE ENGINE (USA)
SPECIFICATIONS
materialSTEEL COMP 1022 OR STEEL COMP 8620 OVERALL
shank_length2.531 INCHES NOMINAL IN
thread_class3A A
thread_length1.250 INCHES MINIMUM IN
overall_length4.594 INCHES NOMINAL IN
style_designatorROUND, CLOSED
thread_directionRIGHT-HAND
eye_stock_diameter0.438 INCHES NOMINAL IN
eye_inside_diameter1.188 INCHES NOMINAL IN
nominal_thread_diameter0.500 INCHES IN
thread_quantity_per_inch20
thread_series_designatorUNF
NSN5306-00-206-0772
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 81328634 · 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: 0.438 INCHES NOMINAL IN
•
THREAD LENGTH: 1.250 INCHES MINIMUM IN
•
SHANK LENGTH: 2.531 INCHES NOMINAL IN
•
STYLE DESIGNATOR: ROUND, CLOSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-20166 MIL SPEC ALL MATERIAL RESPONSES OVERALL
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
EYE STOCK DIAMETER0.438 INCHES NOMINAL IN
THREAD LENGTH1.250 INCHES MINIMUM IN
SHANK LENGTH2.531 INCHES NOMINAL IN
STYLE DESIGNATORROUND, CLOSED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-20166 MIL SPEC ALL MATERIAL RESPONSES OVERALL
OVERALL LENGTH4.594 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.500 INCHES IN
THREAD DIRECTIONRIGHT-HAND
DISTANCE FROM CENTER OF EYE TO SHANK END4.062 INCHES NOMINAL IN
EYE INSIDE DIAMETER1.188 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-004-7044 5306-00-007-6129 5306-00-008-7899 5306-00-009-4739 5306-00-118-7332 5306-00-151-1777 5306-00-255-4507 5306-01-101-2459
SUBSTITUTES & CROSS-REFERENCES 1
00583Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
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 81328634?
81328634 is a BOLT,EYE.
What parts can replace 81328634?
There is 1 known substitute for 81328634: 00583. Substitute compatibility should be verified for your specific system.
What is the NSN for 81328634?
81328634 is cataloged in the U.S. Government catalog under NSN 5306-00-206-0772. 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.