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K618712-11 — BOLT,EYE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

K618712-11: BOLT,EYE.

The BOLT,EYE is a the manufacturer industrial component. Key specifications include material: STEEL COMP E4340 OVERALL, shank_length: 0.640 INCHES NOMINAL IN, thread_class: 3A A, thread_length: 0.640 INCHES MINIMUM IN, overall_length: 1.575 INCHES NOMINAL IN, hardness_rating: 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-421-7767, 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
K618712-11
NSN: 5306-00-421-7767
FSC: 5306 — Bolts
CAGE: 84955 — KAMAN AEROSPACE CORPORATION DBA AIR VEHICLES & MRO DIVISION (USA)
SPECIFICATIONS
materialSTEEL COMP E4340 OVERALL
shank_length0.640 INCHES NOMINAL IN
thread_class3A A
thread_length0.640 INCHES MINIMUM IN
overall_length1.575 INCHES NOMINAL IN
hardness_rating34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
special_featuresSHANK END SLOTTED 0.075 IN. MIN,0.085 IN. MAX W BY 0.438 IN. DEEP IN
style_designatorROUND, CLOSED
thread_directionRIGHT-HAND
eye_stock_diameter0.125 INCHES NOMINAL IN
eye_inside_diameter0.376 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
nominal_thread_diameter0.375 INCHES IN
NSN5306-00-421-7767
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: K618712-11 · 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: 0.125 INCHES NOMINAL IN
•
THREAD LENGTH: 0.640 INCHES MINIMUM IN
•
HARDNESS RATING: 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
•
SHANK LENGTH: 0.640 INCHES NOMINAL IN
•
CRITICALITY CODE JUSTIFICATION: AATK
•
STYLE DESIGNATOR: ROUND, CLOSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
EYE STOCK DIAMETER0.125 INCHES NOMINAL IN
THREAD LENGTH0.640 INCHES MINIMUM IN
HARDNESS RATING34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
SHANK LENGTH0.640 INCHES NOMINAL IN
CRITICALITY CODE JUSTIFICATIONAATK
STYLE DESIGNATORROUND, CLOSED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH1.575 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.375 INCHES IN
THREAD DIRECTIONRIGHT-HAND
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
K618712-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 K618712-11?
K618712-11 is a BOLT,EYE.
What parts can replace K618712-11?
There is 1 known substitute for K618712-11: K618712-1. Substitute compatibility should be verified for your specific system.
What is the NSN for K618712-11?
K618712-11 is cataloged in the U.S. Government catalog under NSN 5306-00-421-7767. 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.