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8C-6123 — NUT,PLAIN,CONE SEAT,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

8C-6123: NUT,PLAIN,CONE SEAT,HEXAGON.

The NUT,PLAIN,CONE SEAT,HEXAGON is a the manufacturer industrial component. Key specifications include nut_height: 1.57 MILLIMETERS NOMINAL MM, width_across_flats: 7.8 MILLIMETERS NOMINAL MM, nominal_thread_size: 0.250 INCHES IN, thread_quantity_per_inch: 40. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-466-5711, 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
8C-6123
NSN: 5310-01-466-5711
FSC: 5310 — Nuts and Washers
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
nut_height1.57 MILLIMETERS NOMINAL MM
width_across_flats7.8 MILLIMETERS NOMINAL MM
nominal_thread_size0.250 INCHES IN
thread_quantity_per_inch40
NSN5310-01-466-5711
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 8C-6123 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
WIDTH ACROSS FLATS: 7.8 MILLIMETERS NOMINAL MM
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
NUT HEIGHT: 1.57 MILLIMETERS NOMINAL MM
•
THREAD QUANTITY PER INCH: 40
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS7.8 MILLIMETERS NOMINAL MM
NOMINAL THREAD SIZE0.250 INCHES IN
NUT HEIGHT1.57 MILLIMETERS NOMINAL MM
THREAD QUANTITY PER INCH40
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 2
7002Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
126-7156 IT.23Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8C-6123?
8C-6123 is a NUT,PLAIN,CONE SEAT,HEXAGON.
What parts can replace 8C-6123?
There are 2 known substitutes for 8C-6123: 7002, 126-7156 IT.23. Substitute compatibility should be verified for your specific system.
What is the NSN for 8C-6123?
8C-6123 is cataloged in the U.S. Government catalog under NSN 5310-01-466-5711. 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.