PartsTable
Technical Data Sheet
T25945B ✓ 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,STEPPED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140, thread_class: 3A NUT THREAD A, thread_length: 0.875 INCHES MINIMUM NUT THREAD IN, overall_length: 3.375 INCHES NOMINAL IN, shank_diameter: 0.337 INCHES MINIMUM AND 0.342 INCHES MAXIMUM IN, hardness_rating: 28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-682-5770, 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
T25945B
NSN: 5307-00-682-5770
FSC: 5307
CAGE: 95201 — NAPCO INTERNATIONAL LLC DBA NAPCO INTERNATIONAL INC (USA)
SPECIFICATIONS
materialSTEEL COMP 4140
thread_class3A NUT THREAD A
thread_length0.875 INCHES MINIMUM NUT THREAD IN
overall_length3.375 INCHES NOMINAL IN
shank_diameter0.337 INCHES MINIMUM AND 0.342 INCHES MAXIMUM IN
hardness_rating28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
style_designatorSTEPPED
thread_directionRIGHT-HAND STUD THREAD
nominal_thread_size0.625 INCHES STUD THREAD IN
thread_pitch_diameters+0.5696 TO 0.5716 INCHES STUD THREAD IN
thread_quantity_per_inch11 STUD THREAD
thread_series_designatorUNF NUT THREAD
NSN5307-00-682-5770
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: T25945B · 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 SERIES DESIGNATOR: UNS STUD THREAD
THREAD PITCH DIAMETERS: +0.5696 TO 0.5716 INCHES STUD THREAD IN
NOMINAL THREAD SIZE: 0.500 INCHES NUT THREAD IN
THREAD CLASS: 3A NUT THREAD A
THREAD DIRECTION: RIGHT-HAND NUT THREAD
THREAD QUANTITY PER INCH: 11 STUD THREAD
THREAD LENGTH: 0.875 INCHES MINIMUM NUT THREAD IN
HARDNESS RATING: 28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNS STUD THREAD
THREAD PITCH DIAMETERS+0.5696 TO 0.5716 INCHES STUD THREAD IN
NOMINAL THREAD SIZE0.500 INCHES NUT THREAD IN
THREAD CLASS3A NUT THREAD A
THREAD DIRECTIONRIGHT-HAND NUT THREAD
THREAD QUANTITY PER INCH11 STUD THREAD
THREAD LENGTH0.875 INCHES MINIMUM NUT THREAD IN
HARDNESS RATING28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
THREAD DIRECTIONRIGHT-HAND STUD THREAD
THREAD LENGTH1.188 INCHES MINIMUM STUD THREAD IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
25945Interchangeable
interchangeable cross-reference
interchangeable
LN16281Interchangeable
interchangeable cross-reference
interchangeable
16281Interchangeable
interchangeable cross-reference
interchangeable
DB7840Interchangeable
interchangeable cross-reference
interchangeable
339230-9Interchangeable
interchangeable cross-reference
interchangeable
RV4SAYSB252AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is T25945B?
T25945B is a STUD,STEPPED.
What parts can replace T25945B?
There are 12 known substitutes for T25945B: 25945, LN16281, 16281 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for T25945B?
T25945B is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-682-5770. This indicates validated use in U.S. government and defense supply chains.
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