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7057655 — NUT,PLAIN,ROUND

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

7057655: NUT,PLAIN,ROUND.

The NUT,PLAIN,ROUND is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: ROUND, nut_diameter: 2.380 INCHES NOMINAL IN, thread_class: 3B, nut_thickness: 0.280 INCHES NOMINAL IN, thread_series: UN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-622-3777, 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
7057655
NSN: 5310-00-622-3777
FSC: 5310 — Nuts and Washers
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleROUND
nut_diameter2.380 INCHES NOMINAL IN
thread_class3B
nut_thickness0.280 INCHES NOMINAL IN
thread_seriesUN
hardness_rating35.0 ROCKWELL C MAXIMUM
thread_directionLEFT-HAND
countersink_angle45.0 DEGREES NOMINAL NUT
drive_point_depth0.130 INCHES NOMINAL IN
drive_point_width0.250 INCHES NOMINAL IN
features_providedCASEHARDENED
NSN5310-00-622-3777
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 7057655 · 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: UN
•
HARDNESS RATING: 35.0 ROCKWELL C MAXIMUM
•
FEATURES PROVIDED: CASEHARDENED
•
DRIVE POINT WIDTH: 0.250 INCHES NOMINAL IN
•
THREAD DIRECTION: LEFT-HAND
•
NOMINAL THREAD SIZE: 1.750 INCHES IN
•
NUT DIAMETER: 2.380 INCHES NOMINAL IN
•
DRIVE POINT DEPTH: 0.130 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
THREAD SERIESUN
HARDNESS RATING35.0 ROCKWELL C MAXIMUM
FEATURES PROVIDEDCASEHARDENED
DRIVE POINT WIDTH0.250 INCHES NOMINAL IN
THREAD DIRECTIONLEFT-HAND
NOMINAL THREAD SIZE1.750 INCHES IN
NUT DIAMETER2.380 INCHES NOMINAL IN
DRIVE POINT DEPTH0.130 INCHES NOMINAL IN
NUT THICKNESS0.280 INCHES NOMINAL IN
COUNTERSINK ANGLE45.0 DEGREES NOMINAL NUT
SUBSTITUTES & CROSS-REFERENCES 1
1669887Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7057655?
7057655 is a NUT,PLAIN,ROUND.
What parts can replace 7057655?
There is 1 known substitute for 7057655: 1669887. Substitute compatibility should be verified for your specific system.
What is the NSN for 7057655?
7057655 is cataloged in the U.S. Government catalog under NSN 5310-00-622-3777. 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.