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S246-3-737A — STUD,LOCKED IN

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

S246-3-737A: STUD,LOCKED IN.

The STUD,LOCKED IN is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130, thread_class: 3A NUT THREAD A, thread_length: 0.388 INCHES MINIMUM AND 0.393 INCHES MAXIMUM STUD THREAD IN, overall_length: 2.740 INCHES MINIMUM AND 2.760 INCHES MAXIMUM IN, locking_feature: RING, LOCK KEYED, shoulder_length: 0.045 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5307-00-987-1429, 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
S246-3-737A
NSN: 5307-00-987-1429
FSC: 5307 — Studs
CAGE: 01556 — STANLEY ENGINEERED FASTENING LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 4130
thread_class3A NUT THREAD A
thread_length0.388 INCHES MINIMUM AND 0.393 INCHES MAXIMUM STUD THREAD IN
overall_length2.740 INCHES MINIMUM AND 2.760 INCHES MAXIMUM IN
locking_featureRING, LOCK KEYED
shoulder_length0.045 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
style_designatorLOCKED IN
thread_directionRIGHT-HAND STUD THREAD
shoulder_diameter0.289 INCHES MINIMUM AND 0.294 INCHES MAXIMUM IN
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.250 INCHES NUT THREAD IN
thread_quantity_per_inch28 NUT THREAD
NSN5307-00-987-1429
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: S246-3-737A · 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: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM NUT THREAD IN
•
STYLE DESIGNATOR: LOCKED IN
•
THREAD DIRECTION: RIGHT-HAND STUD THREAD
•
NOMINAL THREAD SIZE: 0.375 INCHES STUD THREAD IN
TECHNICAL CHARACTERISTICS
THREAD LENGTH0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM NUT THREAD IN
THREAD LENGTH0.388 INCHES MINIMUM AND 0.393 INCHES MAXIMUM STUD THREAD IN
STYLE DESIGNATORLOCKED IN
OVERALL LENGTH2.740 INCHES MINIMUM AND 2.760 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND STUD THREAD
THREAD DIRECTIONRIGHT-HAND NUT THREAD
NOMINAL THREAD SIZE0.375 INCHES STUD THREAD IN
NOMINAL THREAD SIZE0.250 INCHES NUT THREAD IN
SHOULDER DIAMETER0.289 INCHES MINIMUM AND 0.294 INCHES MAXIMUM IN
LOCKING FEATURERING, LOCK KEYED
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 2
882B-4MB2312Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
69823A14-37Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 S246-3-737A?
S246-3-737A is a STUD,LOCKED IN.
What parts can replace S246-3-737A?
There are 2 known substitutes for S246-3-737A: 882B-4MB2312, 69823A14-37. Substitute compatibility should be verified for your specific system.
What is the NSN for S246-3-737A?
S246-3-737A is cataloged in the U.S. Government catalog under NSN 5307-00-987-1429. 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.