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SK-189570PC2 — NUT,PLAIN,ROUND

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

SK-189570PC2: NUT,PLAIN,ROUND.

The NUT,PLAIN,ROUND is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 400 OR NICKEL ALLOY R-405 OVERALL, nut_style: ROUND, nut_diameter: 2.812 INCHES NOMINAL IN, thread_class: 2B, nut_thickness: 0.594 INCHES NOMINAL IN, thread_series: UNF. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-024-7555, 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
SK-189570PC2
NSN: 5310-01-024-7555
FSC: 5310 — Nuts and Washers
CAGE: 93232 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DBA CURTISS WRIGHT ENGINEERED PUMP DIVISION USE CAGE CODE 0UBG9 FOR CATALOGING (USA)
SPECIFICATIONS
materialNICKEL ALLOY 400 OR NICKEL ALLOY R-405 OVERALL
nut_styleROUND
nut_diameter2.812 INCHES NOMINAL IN
thread_class2B
nut_thickness0.594 INCHES NOMINAL IN
thread_seriesUNF
thread_directionRIGHT-HAND
drive_point_depth0.438 INCHES NOMINAL IN
nominal_thread_size1.250 INCHES IN
drive_point_diameter0.281 INCHES NOMINAL IN
drive_point_quantity2
hole_type_and_quantity1 TAPPED
NSN5310-01-024-7555
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SK-189570PC2 · 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
•
HOLE THREAD QUANTITY PER INCH: 20
•
THREAD SERIES: UNF
•
HOLE CONFIGURATION STYLE: CONFIGURATION J
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.250 INCHES IN
•
NUT DIAMETER: 2.812 INCHES NOMINAL IN
•
DRIVE POINT DEPTH: 0.438 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
HOLE THREAD QUANTITY PER INCH20
THREAD SERIESUNF
HOLE CONFIGURATION STYLECONFIGURATION J
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.250 INCHES IN
NUT DIAMETER2.812 INCHES NOMINAL IN
DRIVE POINT DEPTH0.438 INCHES NOMINAL IN
NUT THICKNESS0.594 INCHES NOMINAL IN
DRIVE POINT DIAMETER0.281 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 3
389570-01Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
SK-188765PC18Reference document
Same NSN cross-reference
Reference document — Secondary reference
389570-1Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
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 SK-189570PC2?
SK-189570PC2 is a NUT,PLAIN,ROUND.
What parts can replace SK-189570PC2?
There are 3 known substitutes for SK-189570PC2: 389570-01, SK-188765PC18, 389570-1. Substitute compatibility should be verified for your specific system.
What is the NSN for SK-189570PC2?
SK-189570PC2 is cataloged in the U.S. Government catalog under NSN 5310-01-024-7555. 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.