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Technical Data Sheet
PartsTable / COMPONENT / 5310002091366
5310002091366 ✓ 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 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: 0.305 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN, style_designator: FLAT EXTERNAL TEETH, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-209-1366, 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
5310002091366
NSN: 5310-00-209-1366
FSC: 5310
CAGE: A00AM — E.C.A ETABLISSEMENT CENTRAL DES APPROVISIONNEMENTS DES FORCES ARMEES ROYALES
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_diameter0.305 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
style_designatorFLAT EXTERNAL TEETH
surface_treatmentPASSIVATE OVERALL
material_thickness0.016 INCHES MINIMUM AND 0.022 INCHES MAXIMUM IN
material_document_and_classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-35,TY 2 OR 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-209-1366
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5310002091366 · 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
•
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35,TY 2 OR 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL: STEEL COMP 410 OVERALL
•
STYLE DESIGNATOR: FLAT EXTERNAL TEETH
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
OUTSIDE DIAMETER: 0.305 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.141 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.016 INCHES MINIMUM AND 0.022 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35,TY 2 OR 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIALSTEEL COMP 410 OVERALL
STYLE DESIGNATORFLAT EXTERNAL TEETH
SURFACE TREATMENTPASSIVATE OVERALL
OUTSIDE DIAMETER0.305 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
HOLE DIAMETER0.141 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
MATERIAL THICKNESS0.016 INCHES MINIMUM AND 0.022 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
END ITEM IDENTIFICATIONW/S:RADAR SET, AN/TPN-18; AIRCRAFT (AC-130H, MC-130H, EC-130E, HC-130); COMMUNICATIONS TERMINAL, SATELLITE AN/GSC-39(V)1; AN/SPN-35B; MISSILE, ADVANCED MEDIUM RANGE AIR-TO-AIR (AMRAAM)/AIM120A; AIRBORNE MOBILE DIR AIR SPT CTL (2ID), (02M JUL83)(AN/UYQ-3A); SUPPORT EQUIPMENT, B-1 AIRCRAFT; SUPPORT EQUIPMENT, B-52 AIRCRAFT; TEST STATION, OQ-290(V)MSM A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
6204-2R2Interchangeable
interchangeable cross-reference
interchangeable
9045741Interchangeable
interchangeable cross-reference
interchangeable
1204LLInterchangeable
interchangeable cross-reference
interchangeable
160600Interchangeable
interchangeable cross-reference
interchangeable
540-0062Interchangeable
interchangeable cross-reference
interchangeable
690-0446Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5310002091366?
5310002091366 is a WASHER,LOCK.
What parts can replace 5310002091366?
There are 19 known substitutes for 5310002091366: 6204-2R2, 9045741, 1204LL and 16 more. Substitute compatibility should be verified for your specific system.
Is 5310002091366 still available?
5310002091366 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