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PartsTable / COMPONENT / 5740578
5740578 ✓ 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 SCREW ASSEMBLY,PANEL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thread_class: 3A A, fastener_length: 0.280 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN, hardness_rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM FASTENER, thread_direction: RIGHT-HAND, thread_series_designator: UNIFIED NATIONAL COARSE (UNC). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-190-4078, 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
5740578
NSN: 5305-01-190-4078
FSC: 5305
CAGE: 34623 — AM GENERAL LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thread_class3A A
fastener_length0.280 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN
hardness_rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM FASTENER
thread_directionRIGHT-HAND
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
material_accommodated_thickness0.028 INCHES NOMINAL IN
material_document_and_classification41L400 FSCM 84760 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NSN5305-01-190-4078
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 5740578 · 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
•
MATERIAL ACCOMMODATED THICKNESS: 0.028 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
HARDNESS RATING: 50.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM SPRING
•
MATERIAL DOCUMENT AND CLASSIFICATION: 41L400 FSCM 84760 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL OVERALL
•
FASTENER LENGTH: 0.280 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL ACCOMMODATED THICKNESS0.028 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
HARDNESS RATING50.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM SPRING
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM FASTENER
MATERIAL DOCUMENT AND CLASSIFICATION41L400 FSCM 84760 MFR REF SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
FASTENER LENGTH0.280 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN
THREAD CLASS3A A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
99121622Interchangeable
interchangeable cross-reference
interchangeable
21622Interchangeable
interchangeable cross-reference
interchangeable
3010V0708Interchangeable
interchangeable cross-reference
interchangeable
1501508Interchangeable
interchangeable cross-reference
interchangeable
122351Interchangeable
interchangeable cross-reference
interchangeable
1501417Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5740578?
5740578 is a SCREW ASSEMBLY,PANEL.
What parts can replace 5740578?
There are 13 known substitutes for 5740578: 99121622, 21622, 3010V0708 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5740578?
5740578 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-190-4078. 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