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MS51989-104-15 — STUD,LOCKED IN

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

MS51989-104-15: 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: 0.425 INCHES MINIMUM AND 0.455 INCHES MAXIMUM NUT THREAD IN, overall_length: 1.378 INCHES NOMINAL IN, hardness_rating: 26.0 ROCKWELL C MINIMUM, locking_feature: RING, LOCK SERRATED. This part is cataloged in the U.S.

Government catalog under NSN 5307-01-435-9769, 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
MS51989-104-15
NSN: 5307-01-435-9769
FSC: 5307 — Studs
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialSTEEL COMP 4130
thread_class3A NUT THREAD A
thread_length0.425 INCHES MINIMUM AND 0.455 INCHES MAXIMUM NUT THREAD IN
overall_length1.378 INCHES NOMINAL IN
hardness_rating26.0 ROCKWELL C MINIMUM
locking_featureRING, LOCK SERRATED
special_features125000 PSI MIN. TENSIL STRENGTH
style_designatorLOCKED IN
thread_directionRIGHT-HAND STUD THREAD
surface_treatmentCADMIUM AND CHROMATE OVERALL
serration_quantity13
nominal_thread_size0.190 INCHES NUT THREAD IN
NSN5307-01-435-9769
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS51989-104-15 · 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 DOCUMENT AND CLASSIFICATION: QQ-P-416,TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
DISTANCE FROM SERRATED PORTION TO NUT END: 0.923 INCHES MINIMUM AND 0.953 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.265 INCHES MINIMUM AND 0.295 INCHES MAXIMUM STUD THREAD IN
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM
•
STYLE DESIGNATOR: LOCKED IN
•
THREAD PITCH DIAMETERS: +0.2187 TO 0.2204 INCHES STUD THREAD IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
DISTANCE FROM SERRATED PORTION TO NUT END0.923 INCHES MINIMUM AND 0.953 INCHES MAXIMUM IN
THREAD LENGTH0.265 INCHES MINIMUM AND 0.295 INCHES MAXIMUM STUD THREAD IN
THREAD LENGTH0.425 INCHES MINIMUM AND 0.455 INCHES MAXIMUM NUT THREAD IN
HARDNESS RATING26.0 ROCKWELL C MINIMUM
STYLE DESIGNATORLOCKED IN
THREAD PITCH DIAMETERS+0.2187 TO 0.2204 INCHES STUD THREAD IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH1.378 INCHES NOMINAL IN
DISTANCE FROM SERRATED PORTION TO END OF STUD THREAD0.160 INCHES NOMINAL IN
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 MS51989-104-15?
MS51989-104-15 is a STUD,LOCKED IN.
What is the NSN for MS51989-104-15?
MS51989-104-15 is cataloged in the U.S. Government catalog under NSN 5307-01-435-9769. This indicates validated use in U.S. government and defense supply chains.
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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.