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PartsTable / COMPONENT / NAS 620-416
NAS 620-416 ✓ 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: 0.063 INCHES NOMINAL IN, head_style: HEXAGON, grip_length: 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN, head_height: 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN, thread_class: 3A A. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-655-7219, 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
NAS 620-416
NSN: 5310-00-655-7219
FSC: 5310
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.063 INCHES NOMINAL IN
head_styleHEXAGON
grip_length0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
head_height0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
hole_diameter0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
thread_length0.370 INCHES NOMINAL IN
fastener_length1.370 INCHES NOMINAL IN
hardness_rating36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
overall_diameter0.463 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN
NSN5310-00-655-7219
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: NAS 620-416 · 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: CADMIUM AND CHROMATE OVERALL
•
MATERIAL: STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-698 FED SPEC ALL MATERIAL RESPONSES OVERALL
•
THICKNESS: 0.063 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
CENTER HOLE SHAPE STYLE: ROUND
•
PERIPHERAL SHAPE STYLE: ROUND
•
OVERALL DIAMETER: 0.463 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
MATERIALSTEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-698 FED SPEC ALL MATERIAL RESPONSES OVERALL
THICKNESS0.063 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
CENTER HOLE SHAPE STYLEROUND
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER0.463 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN
HOLE DIAMETER0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
75NTM82Interchangeable
interchangeable cross-reference
interchangeable
1V0064-00Interchangeable
interchangeable cross-reference
interchangeable
21C1599-22Interchangeable
interchangeable cross-reference
interchangeable
1-012-1575Interchangeable
interchangeable cross-reference
interchangeable
NAS6204-16Interchangeable
interchangeable cross-reference
interchangeable
5306PL1497691Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NAS 620-416?
NAS 620-416 is a WASHER,FLAT.
What parts can replace NAS 620-416?
There are 16 known substitutes for NAS 620-416: 75NTM82, 1V0064-00, 21C1599-22 and 13 more. Substitute compatibility should be verified for your specific system.
Is NAS 620-416 still available?
NAS 620-416 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