PartsTable
Technical Data Sheet
10511921 ✓ 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,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 NUT, nut_style: HEXAGON, nut_height: 0.160 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN, lubrication: SOLUBLE LUBRICANT, temp_rating: 250.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-982-6813, 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
10511921
NSN: 5310-00-982-6813
FSC: 5310
CAGE: 56161 — GENERAL DYNAMICS LAND SYSTEMS CANADACORP (CAN)
SPECIFICATIONS
materialSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 NUT
nut_styleHEXAGON
nut_height0.160 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
lubricationSOLUBLE LUBRICANT
temp_rating250.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNJC
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
countersink_angle88.0 DEGREES NOMINAL NUT
surface_treatmentPASSIVATE OVERALL EXCEPT INSERT
width_across_flats0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
NSN5310-00-982-6813
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10511921 · 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 DIRECTION: RIGHT-HAND
NUT STYLE: HEXAGON
COUNTERSINK ANGLE: 88.0 DEGREES NOMINAL NUT
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
MATERIAL: STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 NUT
BEARING SURFACE FINISH: 125.0 MICROINCHES
THREAD SERIES: UNJC
NOMINAL THREAD SIZE: 0.138 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
NUT STYLEHEXAGON
COUNTERSINK ANGLE88.0 DEGREES NOMINAL NUT
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
MATERIALSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 NUT
BEARING SURFACE FINISH125.0 MICROINCHES
THREAD SERIESUNJC
NOMINAL THREAD SIZE0.138 INCHES IN
END ITEM IDENTIFICATIONMRAP - RG-33; MULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
THREAD QUANTITY PER INCH32
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
75NM62Interchangeable
interchangeable cross-reference
interchangeable
298538P2Interchangeable
interchangeable cross-reference
interchangeable
9621-21Interchangeable
interchangeable cross-reference
interchangeable
79NM-62Interchangeable
interchangeable cross-reference
interchangeable
1287424-5Interchangeable
interchangeable cross-reference
interchangeable
79M62Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10511921?
10511921 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 10511921?
There are 15 known substitutes for 10511921: 75NM62, 298538P2, 9621-21 and 12 more. Substitute compatibility should be verified for your specific system.
Is 10511921 still available?
10511921 is currently cancelled.
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