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66A79C67-2 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

66A79C67-2: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OVERALL, head_style: ROUND W/WRENCH FLATS, head_height: 0.125 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 2.000 INCHES NOMINAL IN, thread_length: 0.574 INCHES MINIMUM AND 0.606 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-177-5730, 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
66A79C67-2
NSN: 5306-00-177-5730
FSC: 5306 — Bolts
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OVERALL
head_styleROUND W/WRENCH FLATS
head_height0.125 INCHES NOMINAL IN
thread_class3A A
head_diameter2.000 INCHES NOMINAL IN
thread_length0.574 INCHES MINIMUM AND 0.606 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length2.094 INCHES MINIMUM AND 2.109 INCHES MAXIMUM IN
shoulder_length0.690 INCHES MINIMUM AND 0.692 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter1.1220 INCHES MINIMUM AND 1.1230 INCHES MAXIMUM FIRST SHOULDER IN
surface_treatmentNICKEL OVERALL
NSN5306-00-177-5730
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 66A79C67-2 · 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: 0.125 INCHES NOMINAL IN
•
FASTENER LENGTH: 2.094 INCHES MINIMUM AND 2.109 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 0.690 INCHES MINIMUM AND 0.692 INCHES MAXIMUM FIRST SHOULDER IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-26074 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SHOULDER DIAMETER: 1.1220 INCHES MINIMUM AND 1.1230 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.574 INCHES MINIMUM AND 0.606 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
NOMINAL THREAD DIAMETER: 1.000 INCHES IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.125 INCHES NOMINAL IN
FASTENER LENGTH2.094 INCHES MINIMUM AND 2.109 INCHES MAXIMUM IN
SHOULDER LENGTH0.690 INCHES MINIMUM AND 0.692 INCHES MAXIMUM FIRST SHOULDER IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-26074 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SHOULDER DIAMETER1.1220 INCHES MINIMUM AND 1.1230 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.574 INCHES MINIMUM AND 0.606 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
NOMINAL THREAD DIAMETER1.000 INCHES IN
HEAD STYLEROUND W/WRENCH FLATS
THREAD DIRECTIONRIGHT-HAND
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-004-7044 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 66A79C67-2?
66A79C67-2 is a BOLT,SHOULDER.
What is the NSN for 66A79C67-2?
66A79C67-2 is cataloged in the U.S. Government catalog under NSN 5306-00-177-5730. 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.