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M05-6163555 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

M05-6163555: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 410 OVERALL, hole_diameter: 0.141 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN, hardness_rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM, outside_diameter: 0.275 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN, style_designator: FLAT INTERNAL TEETH, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-616-3555, 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
M05-6163555
NSN: 5310-00-616-3555
FSC: 5310 — Nuts and Washers
CAGE: 53774 — MISCO INC (USA)
SPECIFICATIONS
materialSTEEL COMP 410 OVERALL
hole_diameter0.141 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
outside_diameter0.275 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN
style_designatorFLAT INTERNAL TEETH
surface_treatmentPASSIVATE OVERALL
material_thickness0.017 INCHES MINIMUM AND 0.021 INCHES MAXIMUM IN
end_item_identificationMULTIPLE LAUNCH ROCKET SYSTEM (MLRS); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE
material_document_and_classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-35,TY 2 OR TY 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-616-3555
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: M05-6163555 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35,TY 2 OR TY 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: FLAT INTERNAL TEETH
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.275 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.017 INCHES MINIMUM AND 0.021 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35,TY 2 OR TY 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORFLAT INTERNAL TEETH
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.275 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN
MATERIAL THICKNESS0.017 INCHES MINIMUM AND 0.021 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
END ITEM IDENTIFICATIONMULTIPLE LAUNCH ROCKET SYSTEM (MLRS); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE
MATERIALSTEEL COMP 410 OVERALL
HOLE DIAMETER0.141 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 9
5310PL1369320Reference document
Same NSN cross-reference
Reference document — Informative reference only
2810102-002Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
6INTLT00THSSTReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
404893Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
173-0003-106Reference document
Same NSN cross-reference
Reference document — Secondary reference
939WIS6Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is M05-6163555?
M05-6163555 is a WASHER,LOCK.
What parts can replace M05-6163555?
There are 9 known substitutes for M05-6163555: 5310PL1369320, 2810102-002, 6INTLT00THSST and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M05-6163555?
M05-6163555 is cataloged in the U.S. Government catalog under NSN 5310-00-616-3555. 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.