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10121782 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

10121782: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 420 OVERALL, hole_diameter: 0.194 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN, outside_diameter: 0.334 INCHES MAXIMUM IN, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: PASSIVATE OVERALL, material_thickness: 0.047 INCHES MINIMUM AND 0.053 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-869-9576, 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
10121782
NSN: 5310-00-869-9576
FSC: 5310 — Nuts and Washers
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
materialSTEEL COMP 420 OVERALL
hole_diameter0.194 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN
outside_diameter0.334 INCHES MAXIMUM IN
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentPASSIVATE OVERALL
material_thickness0.047 INCHES MINIMUM AND 0.053 INCHES MAXIMUM IN
end_item_identificationMRAP BUFFALO MK2A2; ARMORED MULTI-PURPOSE VEHICLE (AMPV); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE
material_document_and_classificationAISI ASSN STD SINGLE MATERIAL RESPONSE OR SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-869-9576
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10121782 · 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
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI ASSN STD SINGLE MATERIAL RESPONSE OR SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.334 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.047 INCHES MINIMUM AND 0.053 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL COMP 420 OVERALL
•
HOLE DIAMETER: 0.194 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE OR SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.334 INCHES MAXIMUM IN
MATERIAL THICKNESS0.047 INCHES MINIMUM AND 0.053 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
END ITEM IDENTIFICATIONMRAP BUFFALO MK2A2; ARMORED MULTI-PURPOSE VEHICLE (AMPV); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE
MATERIALSTEEL COMP 420 OVERALL
HOLE DIAMETER0.194 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 9
1011-939Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
82-0143-0010Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
236-1150P5Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
FFW84Reference document
Same NSN cross-reference
Reference document — Identification reference
FF-W-84N010STYL E2CLASSBReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
5310008699576Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 10121782?
10121782 is a WASHER,LOCK.
What parts can replace 10121782?
There are 9 known substitutes for 10121782: 1011-939, 82-0143-0010, 236-1150P5 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 10121782?
10121782 is cataloged in the U.S. Government catalog under NSN 5310-00-869-9576. 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.