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Technical Data Sheet
PartsTable / COMPONENT / 20T5079
20T5079 ✓ 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,SQUARE NECK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1018 OVERALL, head_style: BUTTON, neck_width: 0.750 INCHES NOMINAL IN, head_height: 0.375 INCHES NOMINAL IN, neck_length: 0.469 INCHES NOMINAL IN, thread_class: 2A A. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-496-2225, 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
20T5079
NSN: 5306-00-496-2225
FSC: 5306
CAGE: 81336 — CHIEF OF ENGINEERS DEPT OF ARMY (USA)
SPECIFICATIONS
materialSTEEL COMP 1018 OVERALL
head_styleBUTTON
neck_width0.750 INCHES NOMINAL IN
head_height0.375 INCHES NOMINAL IN
neck_length0.469 INCHES NOMINAL IN
thread_class2A A
head_diameter1.562 INCHES NOMINAL IN
thread_length1.375 INCHES MINIMUM IN
fastener_length2.000 INCHES NOMINAL IN
hardness_rating9.0 ROCKWELL C MINIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentPHOSPHATE OVERALL
NSN5306-00-496-2225
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 20T5079 · 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
•
SURFACE TREATMENT: PHOSPHATE OVERALL
•
THREAD SERIES DESIGNATOR: UNF
•
NECK WIDTH: 0.750 INCHES NOMINAL IN
•
THREAD CLASS: 2A A
•
HEAD STYLE: BUTTON
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD DIAMETER: 0.750 INCHES IN
•
HEAD DIAMETER: 1.562 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTPHOSPHATE OVERALL
THREAD SERIES DESIGNATORUNF
NECK WIDTH0.750 INCHES NOMINAL IN
THREAD CLASS2A A
HEAD STYLEBUTTON
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD DIAMETER0.750 INCHES IN
HEAD DIAMETER1.562 INCHES NOMINAL IN
HEAD HEIGHT0.375 INCHES NOMINAL IN
THREAD QUANTITY PER INCH16
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
T56Upgraded Successor
successor cross-reference
successor
K901432-501Interchangeable
interchangeable cross-reference
interchangeable
M901432SUB7PT2Interchangeable
interchangeable cross-reference
interchangeable
3441-2132-5061Interchangeable
interchangeable cross-reference
interchangeable
AVA250-AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20T5079?
20T5079 is a BOLT,SQUARE NECK.
What parts can replace 20T5079?
There are 5 known substitutes for 20T5079: T56, K901432-501, M901432SUB7PT2 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20T5079?
20T5079 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-496-2225. 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