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Technical Data Sheet
PartsTable / COMPONENT / NAS6203-20
NAS6203-20 ✓ Verified by PartsTable
— · 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 BOLT,SHEAR is a the manufacturer industrial component. Key specifications include material: STEEL COMP E4340 OR STEEL COMP 4340 OR STEEL COMP 8740 OVERALL, head_style: DISHED HEXAGON, grip_length: 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN, head_height: 0.110 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-01-058-3323, 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
NAS6203-20
NSN: 5306-01-058-3323
FSC: 5306
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialSTEEL COMP E4340 OR STEEL COMP 4340 OR STEEL COMP 8740 OVERALL
head_styleDISHED HEXAGON
grip_length1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN
head_height0.110 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN
thread_length0.298 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN
fastener_length1.558 INCHES MINIMUM AND 1.588 INCHES MAXIMUM IN
hardness_rating36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
width_between_flats0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
NSN5306-01-058-3323
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: NAS6203-20 · OEM ⚠ 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: 0.298 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
WIDTH BETWEEN FLATS: 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP E4340 OR STEEL COMP 4340 OR STEEL COMP 8740 OVERALL
•
HARDNESS RATING: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
•
SPECIFICATION/STANDARD DATA: 80205-NAS6203 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
THREAD DIRECTION: RIGHT-HAND
•
FASTENER LENGTH: 1.558 INCHES MINIMUM AND 1.588 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD LENGTH0.298 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.190 INCHES IN
WIDTH BETWEEN FLATS0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
MATERIALSTEEL COMP E4340 OR STEEL COMP 4340 OR STEEL COMP 8740 OVERALL
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
SPECIFICATION/STANDARD DATA80205-NAS6203 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
THREAD DIRECTIONRIGHT-HAND
FASTENER LENGTH1.558 INCHES MINIMUM AND 1.588 INCHES MAXIMUM IN
GRIP DIAMETER0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
10130Upgraded Successor
successor cross-reference
successor
ML003Upgraded Successor
successor cross-reference
successor
900123Interchangeable
interchangeable cross-reference
interchangeable
MS35296-66Interchangeable
interchangeable cross-reference
interchangeable
100030Interchangeable
interchangeable cross-reference
interchangeable
QUARTZ SILICA SANDInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NAS6203-20?
NAS6203-20 is a BOLT,SHEAR.
What parts can replace NAS6203-20?
There are 19 known substitutes for NAS6203-20: 10130, ML003, 900123 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NAS6203-20?
NAS6203-20 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-01-058-3323. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026