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3K3491 — STUD,PLAIN

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

3K3491: STUD,PLAIN.

The STUD,PLAIN is a the manufacturer industrial component. Key specifications include material: STEEL, thread_class: 2A NUT THREAD A, thread_length: 1.060 INCHES NOMINAL STUD THREAD IN, overall_length: 2.560 INCHES MINIMUM AND 2.680 INCHES MAXIMUM IN, thread_direction: RIGHT-HAND NUT THREAD, nominal_thread_size: 0.375 INCHES NUT THREAD IN. This part is cataloged in the U.S.

Government catalog under NSN 5307-01-107-3677, 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
3K3491
NSN: 5307-01-107-3677
FSC: 5307 — Studs
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL
thread_class2A NUT THREAD A
thread_length1.060 INCHES NOMINAL STUD THREAD IN
overall_length2.560 INCHES MINIMUM AND 2.680 INCHES MAXIMUM IN
thread_directionRIGHT-HAND NUT THREAD
nominal_thread_size0.375 INCHES NUT THREAD IN
thread_quantity_per_inch24 STUD THREAD
thread_series_designatorUNF STUD THREAD
material_document_and_classification1E357 FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE
NSN5307-01-107-3677
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3K3491 · 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 LENGTH: 1.060 INCHES NOMINAL NUT THREAD IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 1E357 FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE
•
THREAD DIRECTION: RIGHT-HAND STUD THREAD
•
NOMINAL THREAD SIZE: 0.375 INCHES STUD THREAD IN
TECHNICAL CHARACTERISTICS
THREAD LENGTH1.060 INCHES NOMINAL NUT THREAD IN
THREAD LENGTH1.060 INCHES NOMINAL STUD THREAD IN
MATERIAL DOCUMENT AND CLASSIFICATION1E357 FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE
OVERALL LENGTH2.560 INCHES MINIMUM AND 2.680 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND STUD THREAD
THREAD DIRECTIONRIGHT-HAND NUT THREAD
NOMINAL THREAD SIZE0.375 INCHES STUD THREAD IN
NOMINAL THREAD SIZE0.375 INCHES NUT THREAD IN
THREAD CLASS2A STUD THREAD A
THREAD CLASS2A NUT THREAD A
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3K3491?
3K3491 is a STUD,PLAIN.
What is the NSN for 3K3491?
3K3491 is cataloged in the U.S. Government catalog under NSN 5307-01-107-3677. 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.