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Technical Data Sheet
PartsTable / COMPONENT / 120620
120620 ✓ Verified by PartsTable
Zyxel · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The DIFFERENTIAL,DRIVING AXLE is a Zyxel industrial component. Key specifications include head_style: FLAT COUNTERSUNK, thread_class: 2A A, head_diameter: 0.343 INCHES MINIMUM AND 0.365 INCHES MAXIMUM IN, thread_length: 0.750 INCHES NOMINAL IN, screw_material: STEEL, fastener_length: 0.750 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-012-0620, 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
120620
NSN: 5305-00-012-0620
FSC: 5305
CAGE: 72582 — ROLLS-ROYCE SOLUTIONS AMERICA INC (USA)
SPECIFICATIONS
head_styleFLAT COUNTERSUNK
thread_class2A A
head_diameter0.343 INCHES MINIMUM AND 0.365 INCHES MAXIMUM IN
thread_length0.750 INCHES NOMINAL IN
screw_materialSTEEL
fastener_length0.750 INCHES NOMINAL IN
thread_directionRIGHT-HAND
countersink_angle80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
internal_drive_styleSLOT
nominal_thread_diameter0.190 INCHES IN
screw_surface_treatmentCADMIUM AND CHROMATE OR ZINC AND CHROMATE
thread_quantity_per_inch24
NSN5305-00-012-0620
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 120620 · Zyxel ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
THREAD LENGTH: 0.750 INCHES NOMINAL IN
•
SCREW SURFACE TREATMENT: CADMIUM AND CHROMATE OR ZINC AND CHROMATE
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
COUNTERSINK ANGLE: 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
HEAD DIAMETER: 0.343 INCHES MINIMUM AND 0.365 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
•
SCREW MATERIAL: STEEL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD LENGTH0.750 INCHES NOMINAL IN
SCREW SURFACE TREATMENTCADMIUM AND CHROMATE OR ZINC AND CHROMATE
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
COUNTERSINK ANGLE80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
NOMINAL THREAD DIAMETER0.190 INCHES IN
HEAD DIAMETER0.343 INCHES MINIMUM AND 0.365 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL
FASTENER LENGTH0.750 INCHES NOMINAL IN
THREAD QUANTITY PER INCH24
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
1206-20Interchangeable
interchangeable cross-reference
interchangeable
515175Interchangeable
interchangeable cross-reference
interchangeable
1456780Interchangeable
interchangeable cross-reference
interchangeable
FFS92TYPE1STYLE2SInterchangeable
Same NIIN cross-reference
interchangeable
MS35241-72Interchangeable
Same NIIN cross-reference
interchangeable
BCKX2AG1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 120620?
120620 is a DIFFERENTIAL,DRIVING AXLE manufactured by Zyxel.
What parts can replace 120620?
There are 6 known substitutes for 120620: 1206-20, 515175, 1456780 and 3 more. Substitute compatibility should be verified for your specific system.
Is 120620 still available?
120620 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