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6566-20-381-3102 — NUT,PLAIN,ROUND

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

6566-20-381-3102: NUT,PLAIN,ROUND.

The NUT,PLAIN,ROUND is a the manufacturer industrial component. Key specifications include material: STEEL COMP 630 OVERALL, nut_style: ROUND, nut_diameter: 0.985 INCHES MINIMUM AND 0.990 INCHES MAXIMUM IN, thread_class: 3B, nut_thickness: 0.120 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN, thread_series: UNJC. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-130-3277, 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
6566-20-381-3102
NSN: 5310-01-130-3277
FSC: 5310 — Nuts and Washers
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 630 OVERALL
nut_styleROUND
nut_diameter0.985 INCHES MINIMUM AND 0.990 INCHES MAXIMUM IN
thread_class3B
nut_thickness0.120 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
thread_seriesUNJC
thread_directionRIGHT-HAND
countersink_angle85.0 DEGREES MINIMUM AND 95.0 DEGREES MAXIMUM BOTH ENDS
nominal_thread_size0.138 INCHES IN
thread_quantity_per_inch32
material_document_and_classificationAMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-130-3277
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 6566-20-381-3102 · 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: UNJC
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.138 INCHES IN
•
NUT DIAMETER: 0.985 INCHES MINIMUM AND 0.990 INCHES MAXIMUM IN
•
NUT THICKNESS: 0.120 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
•
COUNTERSINK ANGLE: 85.0 DEGREES MINIMUM AND 95.0 DEGREES MAXIMUM BOTH ENDS
•
NUT STYLE: ROUND
TECHNICAL CHARACTERISTICS
THREAD SERIESUNJC
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.138 INCHES IN
NUT DIAMETER0.985 INCHES MINIMUM AND 0.990 INCHES MAXIMUM IN
NUT THICKNESS0.120 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
COUNTERSINK ANGLE85.0 DEGREES MINIMUM AND 95.0 DEGREES MAXIMUM BOTH ENDS
NUT STYLEROUND
THREAD CLASS3B
THREAD QUANTITY PER INCH32
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6566-20-381-3102?
6566-20-381-3102 is a NUT,PLAIN,ROUND.
What is the NSN for 6566-20-381-3102?
6566-20-381-3102 is cataloged in the U.S. Government catalog under NSN 5310-01-130-3277. This indicates validated use in U.S. government and defense supply chains.
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