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549-3682-002 — NUT,PLAIN,ROUND

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

549-3682-002: NUT,PLAIN,ROUND.

The NUT,PLAIN,ROUND is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, nut_style: ROUND, nut_diameter: 0.766 INCHES MINIMUM AND 0.797 INCHES MAXIMUM IN, thread_class: 2B, nut_thickness: 0.172 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN, thread_series: UNEF. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-702-4949, 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
549-3682-002
NSN: 5310-00-702-4949
FSC: 5310 — Nuts and Washers
CAGE: 13499 — ROCKWELL COLLINS, INC. DBA COLLINS AEROSPACE GOVERNMENT SYSTEMS DIV COLLINS AEROSPACE - GOVERNMENT SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
nut_styleROUND
nut_diameter0.766 INCHES MINIMUM AND 0.797 INCHES MAXIMUM IN
thread_class2B
nut_thickness0.172 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
thread_seriesUNEF
thread_directionRIGHT-HAND
drive_point_depth0.047 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
drive_point_width0.117 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.562 INCHES IN
drive_point_quantity4
NSN5310-00-702-4949
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 549-3682-002 · 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: UNEF
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
DRIVE POINT WIDTH: 0.117 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.562 INCHES IN
•
NUT DIAMETER: 0.766 INCHES MINIMUM AND 0.797 INCHES MAXIMUM IN
•
DRIVE POINT DEPTH: 0.047 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
•
NUT THICKNESS: 0.172 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
THREAD SERIESUNEF
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
DRIVE POINT WIDTH0.117 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.562 INCHES IN
NUT DIAMETER0.766 INCHES MINIMUM AND 0.797 INCHES MAXIMUM IN
DRIVE POINT DEPTH0.047 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
NUT THICKNESS0.172 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
DRIVE POINT QUANTITY4
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 549-3682-002?
549-3682-002 is a NUT,PLAIN,ROUND.
What is the NSN for 549-3682-002?
549-3682-002 is cataloged in the U.S. Government catalog under NSN 5310-00-702-4949. 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.