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1D98 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The NUT,PLAIN,CAP is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 360 OVERALL, nut_style: CAP, nut_height: 0.500 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNS, thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-440-2568, 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
1D98
NSN: 5310-00-440-2568
FSC: 5310
CAGE: 0AHP5 — CURTISS-WRIGHT CONTROLS, INC. DIV ACTUATION DIVISION (USA)
SPECIFICATIONS
materialCOPPER ALLOY 360 OVERALL
nut_styleCAP
nut_height0.500 INCHES NOMINAL IN
thread_class2B
thread_seriesUNS
thread_directionRIGHT-HAND
width_across_flats1.000 INCHES NOMINAL IN
nominal_thread_size0.875 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch18
material_document_and_classificationAMS 4610 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-440-2568
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1D98 · 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
•
WIDTH ACROSS FLATS: 1.000 INCHES NOMINAL IN
•
NUT HEIGHT: 0.500 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 18
•
THREAD SERIES: UNS
•
NOMINAL THREAD SIZE: 0.875 INCHES IN
•
BEARING SURFACE TYPE: CHAMFERED
•
MATERIAL: COPPER ALLOY 360 OVERALL
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH ACROSS FLATS1.000 INCHES NOMINAL IN
NUT HEIGHT0.500 INCHES NOMINAL IN
THREAD QUANTITY PER INCH18
THREAD SERIESUNS
NOMINAL THREAD SIZE0.875 INCHES IN
BEARING SURFACE TYPECHAMFERED
MATERIALCOPPER ALLOY 360 OVERALL
THREAD DIRECTIONRIGHT-HAND
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4610 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NUT STYLECAP
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
154926R91Interchangeable
interchangeable cross-reference
interchangeable
28174XInterchangeable
interchangeable cross-reference
interchangeable
11-457-4Interchangeable
interchangeable cross-reference
interchangeable
114574-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1D98?
1D98 is a NUT,PLAIN,CAP.
What parts can replace 1D98?
There are 4 known substitutes for 1D98: 154926R91, 28174X, 11-457-4 and 1 more. Substitute compatibility should be verified for your specific system.
Is 1D98 still available?
1D98 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026