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SAE-AS51989 — STUD,LOCKED IN

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

SAE-AS51989: STUD,LOCKED IN.

The STUD,LOCKED IN is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660, thread_class: 3A NUT THREAD A, thread_length: 0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM NUT THREAD IN, overall_length: 0.998 INCHES NOMINAL IN, locking_feature: RING, LOCK SERRATED, style_designator: LOCKED IN. This part is cataloged in the U.S.

Government catalog under NSN 5307-01-619-2202, 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
SAE-AS51989
NSN: 5307-01-619-2202
NIINs: 016192202, 017340051
FSC: 5307 — Studs
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialIRON ALLOY 660
thread_class3A NUT THREAD A
thread_length0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM NUT THREAD IN
overall_length0.998 INCHES NOMINAL IN
locking_featureRING, LOCK SERRATED
style_designatorLOCKED IN
thread_directionRIGHT-HAND STUD THREAD
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.2500 INCHES STUD THREAD IN
thread_quantity_per_inch32 NUT THREAD
thread_series_designatorUNF STUD THREAD
specification/standard_data0U583-SAE AS51989 INTERNATIONAL STD/SPEC
NSN5307-01-619-2202
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: SAE-AS51989 · 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
TECHNICAL CHARACTERISTICS
PART NAME ASSIGNED BY CONTROLLING AGENCYSTUD,LOCKED IN
SUBSTITUTES & CROSS-REFERENCES 1
MS51989-105-15Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SAE-AS51989?
SAE-AS51989 is a STUD,LOCKED IN.
What parts can replace SAE-AS51989?
There is 1 known substitute for SAE-AS51989: MS51989-105-15. Substitute compatibility should be verified for your specific system.
What is the NSN for SAE-AS51989?
SAE-AS51989 is cataloged in the U.S. Government catalog under NSN 5307-01-619-2202. 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.