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C646-08 — NUT,CLIP-ON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

C646-08: NUT,CLIP-ON.

The NUT,CLIP-ON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: FLOATING, temp_rating: -65.0 FAHRENHEIT MINIMUM AND 450.0 FAHRENHEIT MAXIMUM DEGF, thread_class: 3B, overall_width: 0.437 INCHES MAXIMUM IN, thread_series: UNIFIED NATIONAL COARSE (UNC). This part is cataloged in the U.S.

Government catalog under NSN 5310-00-062-3315, 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
C646-08
NSN: 5310-00-062-3315
FSC: 5310 — Nuts and Washers
CAGE: 81755 — LOCKHEED MARTIN CORPORATION DIV LOCKHEED MARTIN AERONAUTICS COMPANY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleFLOATING
temp_rating-65.0 FAHRENHEIT MINIMUM AND 450.0 FAHRENHEIT MAXIMUM DEGF
thread_class3B
overall_width0.437 INCHES MAXIMUM IN
thread_seriesUNIFIED NATIONAL COARSE (UNC)
locking_featurePREVAILING TORQUE ALL METAL DESIGN
panel_thickness0.190 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
features_providedFLOATING NUT
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.164 INCHES IN
NSN5310-00-062-3315
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: C646-08 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
TEMP RATING: -65.0 FAHRENHEIT MINIMUM AND 450.0 FAHRENHEIT MAXIMUM DEGF
•
DISTANCE FROM BASE TO CENTER OF APERTURE: 0.570 INCHES MAXIMUM IN
•
FEATURES PROVIDED: FLOATING NUT
•
THREAD DIRECTION: RIGHT-HAND
•
PANEL THICKNESS: 0.190 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
TEMP RATING-65.0 FAHRENHEIT MINIMUM AND 450.0 FAHRENHEIT MAXIMUM DEGF
DISTANCE FROM BASE TO CENTER OF APERTURE0.570 INCHES MAXIMUM IN
FEATURES PROVIDEDFLOATING NUT
OVERALL WIDTH0.437 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
PANEL THICKNESS0.190 INCHES MAXIMUM IN
NOMINAL THREAD SIZE0.164 INCHES IN
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
SUBSTITUTES & CROSS-REFERENCES 7
BACN10FX83Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
BRC500-8-08Reference document
Same NSN cross-reference
Reference document — Secondary reference
A4972-8-82Reference document
Same NSN cross-reference
Reference document — Secondary reference
062-3315Reference document
Same NSN cross-reference
Reference document — Secondary reference
294671LReference document
Same NSN cross-reference
Reference document — Secondary reference
RM52LHA4972-8-82Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is C646-08?
C646-08 is a NUT,CLIP-ON.
What parts can replace C646-08?
There are 7 known substitutes for C646-08: BACN10FX83, BRC500-8-08, A4972-8-82 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for C646-08?
C646-08 is cataloged in the U.S. Government catalog under NSN 5310-00-062-3315. This indicates validated use in U.S. government and defense supply chains.
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