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SK133643 — NUT,PLAIN,ROUND

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

SK133643: NUT,PLAIN,ROUND.

The NUT,PLAIN,ROUND is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY R-405 OVERALL, nut_style: ROUND, nut_diameter: 2.062 INCHES NOMINAL IN, thread_class: 2B, nut_thickness: 1.688 INCHES NOMINAL IN, thread_series: UN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-152-1576, 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
SK133643
NSN: 5310-00-152-1576
FSC: 5310 — Nuts and Washers
CAGE: 0UBG9 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DIV EPD (USA)
SPECIFICATIONS
materialNICKEL ALLOY R-405 OVERALL
nut_styleROUND
nut_diameter2.062 INCHES NOMINAL IN
thread_class2B
nut_thickness1.688 INCHES NOMINAL IN
thread_seriesUN
thread_directionRIGHT-HAND
drive_point_depth0.531 INCHES NOMINAL IN
nominal_thread_size1.625 INCHES IN
drive_point_diameter0.266 INCHES NOMINAL IN
drive_point_quantity4
thread_quantity_per_inch12
NSN5310-00-152-1576
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SK133643 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.625 INCHES IN
•
NUT DIAMETER: 2.062 INCHES NOMINAL IN
•
DRIVE POINT DEPTH: 0.531 INCHES NOMINAL IN
•
NUT THICKNESS: 1.688 INCHES NOMINAL IN
•
DRIVE POINT DIAMETER: 0.266 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
THREAD SERIESUN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.625 INCHES IN
NUT DIAMETER2.062 INCHES NOMINAL IN
DRIVE POINT DEPTH0.531 INCHES NOMINAL IN
NUT THICKNESS1.688 INCHES NOMINAL IN
DRIVE POINT DIAMETER0.266 INCHES NOMINAL IN
DRIVE POINT QUANTITY4
NUT STYLEROUND
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 3
SL5002PC37Reference document
Same NSN cross-reference
Reference document — Secondary reference
SL5968PC37Reference document
Same NSN cross-reference
Reference document — Secondary reference
CS4320-0282Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 SK133643?
SK133643 is a NUT,PLAIN,ROUND.
What parts can replace SK133643?
There are 3 known substitutes for SK133643: SL5002PC37, SL5968PC37, CS4320-0282. Substitute compatibility should be verified for your specific system.
What is the NSN for SK133643?
SK133643 is cataloged in the U.S. Government catalog under NSN 5310-00-152-1576. 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.