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KNS900-5-12 — STUD,LOCKED IN

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

KNS900-5-12: STUD,LOCKED IN.

The STUD,LOCKED IN is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140, thread_class: 3A NUT THREAD A, thread_length: 0.422 INCHES MINIMUM AND 0.452 INCHES MAXIMUM STUD THREAD IN, overall_length: 1.142 INCHES MINIMUM AND 1.232 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES STUD THD, hardness_rating: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5307-01-152-4245, 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
KNS900-5-12
NSN: 5307-01-152-4245
FSC: 5307 — Studs
CAGE: 75237 — HOWMET GLOBAL FASTENING SYSTEMS INC. DIV MICRODOT PRODUCTS (USA)
SPECIFICATIONS
materialSTEEL COMP 4140
thread_class3A NUT THREAD A
thread_length0.422 INCHES MINIMUM AND 0.452 INCHES MAXIMUM STUD THREAD IN
overall_length1.142 INCHES MINIMUM AND 1.232 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES STUD THD
hardness_rating36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
locking_featureRING, LOCK SERRATED
style_designatorLOCKED IN
thread_directionRIGHT-HAND STUD THREAD
surface_treatmentCADMIUM AND CHROMATE OVERALL
nominal_thread_size0.312 INCHES NUT THREAD IN
thread_quantity_per_inch14 STUD THREAD
NSN5307-01-152-4245
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: KNS900-5-12 · 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 FINISH: 63.0 MICROINCHES STUD THD
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.500 INCHES MINIMUM AND 0.560 INCHES MAXIMUM NUT THREAD IN
•
HARDNESS RATING: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: LOCKED IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES STUD THD
SURFACE FINISH32.0 MICROINCHES NUT THD
SURFACE FINISH63.0 MICROINCHES SHANK
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.500 INCHES MINIMUM AND 0.560 INCHES MAXIMUM NUT THREAD IN
THREAD LENGTH0.422 INCHES MINIMUM AND 0.452 INCHES MAXIMUM STUD THREAD IN
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORLOCKED IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH1.142 INCHES MINIMUM AND 1.232 INCHES MAXIMUM 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 2
MS51833-203-12Reference document
Same NSN cross-reference
Reference document — Secondary reference
10116433Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 KNS900-5-12?
KNS900-5-12 is a STUD,LOCKED IN.
What parts can replace KNS900-5-12?
There are 2 known substitutes for KNS900-5-12: MS51833-203-12, 10116433. Substitute compatibility should be verified for your specific system.
What is the NSN for KNS900-5-12?
KNS900-5-12 is cataloged in the U.S. Government catalog under NSN 5307-01-152-4245. 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.