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Technical Data Sheet
PartsTable / COMPONENT / NAS620-3L
NAS620-3L ✓ 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,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.016 INCHES NOMINAL IN, hole_diameter: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN, overall_diameter: 0.175 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN, surface_treatment: CADMIUM OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-576-0900, 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
NAS620-3L
NSN: 5310-00-576-0900
FSC: 5310
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.016 INCHES NOMINAL IN
hole_diameter0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
overall_diameter0.175 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
surface_treatmentCADMIUM OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationQQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-576-0900
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: NAS620-3L · 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
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL OVERALL
•
OVERALL DIAMETER: 0.175 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
HOLE DIAMETER: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
PERIPHERAL SHAPE STYLEROUND
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
OVERALL DIAMETER0.175 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
CENTER HOLE SHAPE STYLEROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HOLE DIAMETER0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
THICKNESS0.016 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
51558Interchangeable
interchangeable cross-reference
interchangeable
51558-00Interchangeable
interchangeable cross-reference
interchangeable
SC-C-70650Interchangeable
interchangeable cross-reference
interchangeable
78-20A FIND 44Interchangeable
interchangeable cross-reference
interchangeable
51567Interchangeable
interchangeable cross-reference
interchangeable
10139110Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NAS620-3L?
NAS620-3L is a WASHER,FLAT.
What parts can replace NAS620-3L?
There are 13 known substitutes for NAS620-3L: 51558, 51558-00, SC-C-70650 and 10 more. Substitute compatibility should be verified for your specific system.
Is NAS620-3L still available?
NAS620-3L 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