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6280C-SS-0440 — NUT,PLAIN,CLINCH

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

6280C-SS-0440: NUT,PLAIN,CLINCH.

The NUT,PLAIN,CLINCH is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, nut_style: CLINCH, nut_height: 0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN, nut_diameter: 0.278 INCHES MINIMUM AND 0.284 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC). This part is cataloged in the U.S.

Government catalog under NSN 5310-01-043-5784, 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
6280C-SS-0440
NSN: 5310-01-043-5784
FSC: 5310 — Nuts and Washers
CAGE: 1YGB8 — CAREY MANUFACTURING CO, INC DBA AMATOM ELECTRONIC HARDWARE DIV AMATOM ELECTRONIC HARDWARE (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleCLINCH
nut_height0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN
nut_diameter0.278 INCHES MINIMUM AND 0.284 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
pilot_diameter0.247 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
nominal_thread_size0.099 INCHES IN
counterbore_diameter0.192 INCHES MINIMUM AND 0.197 INCHES MAXIMUM FIRST END IN
nut_counterbore_depth0.073 INCHES MINIMUM AND 0.083 INCHES MAXIMUM NUT IN
thread_quantity_per_inch48
NSN5310-01-043-5784
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 6280C-SS-0440 · 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
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
NUT COUNTERBORE DEPTH: 0.073 INCHES MINIMUM AND 0.083 INCHES MAXIMUM NUT IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.099 INCHES IN
•
NUT DIAMETER: 0.278 INCHES MINIMUM AND 0.284 INCHES MAXIMUM IN
•
COUNTERBORE DIAMETER: 0.192 INCHES MINIMUM AND 0.197 INCHES MAXIMUM FIRST END IN
•
PILOT DIAMETER: 0.247 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN
•
NUT HEIGHT: 0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
NUT COUNTERBORE DEPTH0.073 INCHES MINIMUM AND 0.083 INCHES MAXIMUM NUT IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.099 INCHES IN
NUT DIAMETER0.278 INCHES MINIMUM AND 0.284 INCHES MAXIMUM IN
COUNTERBORE DIAMETER0.192 INCHES MINIMUM AND 0.197 INCHES MAXIMUM FIRST END IN
PILOT DIAMETER0.247 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN
NUT HEIGHT0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN
NUT STYLECLINCH
THREAD CLASS2B
SUBSTITUTES & CROSS-REFERENCES 2
0125981-2Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
5048-3Same 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 6280C-SS-0440?
6280C-SS-0440 is a NUT,PLAIN,CLINCH.
What parts can replace 6280C-SS-0440?
There are 2 known substitutes for 6280C-SS-0440: 0125981-2, 5048-3. Substitute compatibility should be verified for your specific system.
What is the NSN for 6280C-SS-0440?
6280C-SS-0440 is cataloged in the U.S. Government catalog under NSN 5310-01-043-5784. 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.