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Technical Data Sheet
PartsTable / COMPONENT / 20T4081
20T4081 ✓ 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 STUD,PLAIN is a the manufacturer industrial component. Key specifications include material: STEEL COMP B1113, thread_class: 3A NUT THREAD A, thread_length: 0.938 INCHES MINIMUM NUT THREAD IN, overall_length: 2.188 INCHES NOMINAL IN, thread_direction: RIGHT-HAND STUD THREAD, surface_treatment: CADMIUM OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-496-2582, 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
20T4081
NSN: 5307-00-496-2582
FSC: 5307
CAGE: 81336 — CHIEF OF ENGINEERS DEPT OF ARMY (USA)
SPECIFICATIONS
materialSTEEL COMP B1113
thread_class3A NUT THREAD A
thread_length0.938 INCHES MINIMUM NUT THREAD IN
overall_length2.188 INCHES NOMINAL IN
thread_directionRIGHT-HAND STUD THREAD
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.625 INCHES NUT THREAD IN
thread_pitch_diameters+0.5680 TO 0.5700 INCHES STUD THREAD IN
thread_quantity_per_inch18 NUT THREAD
thread_series_designatorUNF NUT THREAD
NSN5307-00-496-2582
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 20T4081 · 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: CADMIUM OVERALL
•
THREAD LENGTH: 0.938 INCHES MINIMUM NUT THREAD IN
•
THREAD DIRECTION: RIGHT-HAND NUT THREAD
•
THREAD PITCH DIAMETERS: +0.5680 TO 0.5700 INCHES STUD THREAD IN
•
NOMINAL THREAD SIZE: 0.625 INCHES NUT THREAD IN
•
THREAD SERIES DESIGNATOR: UNS STUD THREAD
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTCADMIUM OVERALL
THREAD LENGTH0.938 INCHES MINIMUM NUT THREAD IN
THREAD DIRECTIONRIGHT-HAND NUT THREAD
THREAD PITCH DIAMETERS+0.5680 TO 0.5700 INCHES STUD THREAD IN
NOMINAL THREAD SIZE0.625 INCHES NUT THREAD IN
OVERALL LENGTH2.188 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND STUD THREAD
THREAD SERIES DESIGNATORUNS STUD THREAD
THREAD QUANTITY PER INCH18 NUT THREAD
MATERIALSTEEL COMP B1113
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
E519A01Interchangeable
interchangeable cross-reference
interchangeable
105996Interchangeable
interchangeable cross-reference
interchangeable
202941Interchangeable
interchangeable cross-reference
interchangeable
B34087Interchangeable
interchangeable cross-reference
interchangeable
20294Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20T4081?
20T4081 is a STUD,PLAIN.
What parts can replace 20T4081?
There are 5 known substitutes for 20T4081: E519A01, 105996, 202941 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20T4081?
20T4081 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-496-2582. 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