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555821P3 — STUD,PLAIN

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

555821P3: STUD,PLAIN.

The STUD,PLAIN is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, thread_class: 3A NUT THREAD A, overall_length: 1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM IN, thread_direction: RIGHT-HAND STUD THREAD, nominal_thread_size: 0.250 INCHES STUD THREAD IN, thread_series_designator: UNS NUT THREAD. This part is cataloged in the U.S.

Government catalog under NSN 5307-01-238-6424, 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
555821P3
NSN: 5307-01-238-6424
FSC: 5307 — Studs
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
thread_class3A NUT THREAD A
overall_length1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM IN
thread_directionRIGHT-HAND STUD THREAD
nominal_thread_size0.250 INCHES STUD THREAD IN
thread_series_designatorUNS NUT THREAD
NSN5307-01-238-6424
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 555821P3 · 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 DIRECTION: RIGHT-HAND STUD THREAD
•
NOMINAL THREAD SIZE: 0.250 INCHES NUT THREAD IN
•
THREAD CLASS: 3A NUT THREAD A
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
OVERALL LENGTH1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND STUD THREAD
THREAD DIRECTIONRIGHT-HAND NUT THREAD
NOMINAL THREAD SIZE0.250 INCHES NUT THREAD IN
NOMINAL THREAD SIZE0.250 INCHES STUD THREAD IN
THREAD CLASS3A NUT THREAD A
THREAD CLASS3A STUD THREAD A
MATERIALSTEEL CORROSION RESISTING
THREAD SERIES DESIGNATORUNF STUD THREAD
THREAD SERIES DESIGNATORUNS NUT THREAD
OTHER ITEMS IN FSC 5307 — Studs
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5307-00-000-6436 5307-00-001-1578 5307-00-001-1761 5307-00-001-2366 5307-00-001-4491 5307-00-001-4624 5307-00-001-4625
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 555821P3?
555821P3 is a STUD,PLAIN.
What is the NSN for 555821P3?
555821P3 is cataloged in the U.S. Government catalog under NSN 5307-01-238-6424. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.