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Technical Data Sheet
PartsTable / COMPONENT / 202987
202987 ✓ 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,HEXAGON is a the manufacturer industrial component. Key specifications include nut_style: HEXAGON, nut_height: 0.640 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, thread_direction: RIGHT-HAND, width_across_flats: 1.060 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-010-3332, 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
202987
NSN: 5310-00-010-3332
FSC: 5310
CAGE: 06853 — BENDIX COMMERCIAL VEHICLE SYSTEMS LLC DBA BENDIX COMMERCIAL VEHICLE SYSTEMS (USA)
SPECIFICATIONS
nut_styleHEXAGON
nut_height0.640 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
thread_directionRIGHT-HAND
width_across_flats1.060 INCHES NOMINAL IN
nominal_thread_size0.625 INCHES IN
bearing_surface_typeWASHER FACED
thread_quantity_per_inch18
NSN5310-00-010-3332
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 202987 · 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
•
NONDEFINITIVE SPEC/STD DATA: 3 STYLE AND A CLASS
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
OUTSIDE DIAMETER: 1.299 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
HOLE DIAMETER: 0.763 INCHES MINIMUM AND 0.791 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
MATERIAL THICKNESS: 0.226 INCHES MINIMUM AND 0.236 INCHES MAXIMUM IN
•
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
TECHNICAL CHARACTERISTICS (FLIS)
NONDEFINITIVE SPEC/STD DATA3 STYLE AND A CLASS
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
OUTSIDE DIAMETER1.299 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
HOLE DIAMETER0.763 INCHES MINIMUM AND 0.791 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
MATERIAL THICKNESS0.226 INCHES MINIMUM AND 0.236 INCHES MAXIMUM IN
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
664664Interchangeable
interchangeable cross-reference
interchangeable
782796Interchangeable
interchangeable cross-reference
interchangeable
829790Interchangeable
interchangeable cross-reference
interchangeable
4315Interchangeable
interchangeable cross-reference
interchangeable
MS17161-62Interchangeable
interchangeable cross-reference
interchangeable
349BMZ216Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 202987?
202987 is a NUT,PLAIN,HEXAGON.
What parts can replace 202987?
There are 27 known substitutes for 202987: 664664, 782796, 829790 and 24 more. Substitute compatibility should be verified for your specific system.
Is 202987 still available?
202987 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