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68NKC1-40 — NUT,SELF-LOCKING,CLINCH

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

68NKC1-40: NUT,SELF-LOCKING,CLINCH.

The NUT,SELF-LOCKING,CLINCH is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2017 NUT, nut_style: CLINCH, nut_height: 0.266 INCHES NOMINAL IN, pilot_length: 0.057 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN, thread_class: 3B, thread_series: UNIFIED NATIONAL COARSE (UNC). This part is cataloged in the U.S.

Government catalog under NSN 5310-00-784-3729, 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
68NKC1-40
NSN: 5310-00-784-3729
FSC: 5310 — Nuts and Washers
CAGE: 72962 — HARVARD INDUSTRIES INC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2017 NUT
nut_styleCLINCH
nut_height0.266 INCHES NOMINAL IN
pilot_length0.057 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
pilot_diameter0.187 INCHES MINIMUM AND 0.191 INCHES MAXIMUM IN
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
special_featuresRED NYLON CAP 0.140 IN. DIA AND NYLON LOCKING INSERT PROVIDED AS AN INTEGRAL PART OF THE ITEM IN
thread_directionRIGHT-HAND
width_across_flats0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
nominal_thread_size0.112 INCHES IN
NSN5310-00-784-3729
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 68NKC1-40 · 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: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.112 INCHES IN
•
PILOT DIAMETER: 0.187 INCHES MINIMUM AND 0.191 INCHES MAXIMUM IN
•
PILOT LENGTH: 0.057 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN
•
LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT
•
NUT HEIGHT: 0.266 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.112 INCHES IN
PILOT DIAMETER0.187 INCHES MINIMUM AND 0.191 INCHES MAXIMUM IN
PILOT LENGTH0.057 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
NUT HEIGHT0.266 INCHES NOMINAL IN
SPECIAL FEATURESRED NYLON CAP 0.140 IN. DIA AND NYLON LOCKING INSERT PROVIDED AS AN INTEGRAL PART OF THE ITEM IN
NUT STYLECLINCH
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 68NKC1-40?
68NKC1-40 is a NUT,SELF-LOCKING,CLINCH.
What is the NSN for 68NKC1-40?
68NKC1-40 is cataloged in the U.S. Government catalog under NSN 5310-00-784-3729. This indicates validated use in U.S. government and defense supply chains.
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