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KNHS428JM-9SY-.373 — STUD,STEPPED

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

KNHS428JM-9SY-.373: STUD,STEPPED.

The STUD,STEPPED is a the manufacturer industrial component. Key specifications include material: STEEL, thread_class: 2A STUD THREAD A, thread_length: 0.370 INCHES MAXIMUM STUD THREAD IN, overall_length: 0.933 INCHES NOMINAL IN, shank_diameter: 0.250 INCHES NOMINAL IN, style_designator: STEPPED. This part is cataloged in the U.S.

Government catalog under NSN 5307-00-948-6558, 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
KNHS428JM-9SY-.373
NSN: 5307-00-948-6558
FSC: 5307 — Studs
CAGE: 29372 — HOWMET GLOBAL FASTENING SYSTEMS INC. DIV TRIDAIR PRODUCTS (USA)
SPECIFICATIONS
materialSTEEL
thread_class2A STUD THREAD A
thread_length0.370 INCHES MAXIMUM STUD THREAD IN
overall_length0.933 INCHES NOMINAL IN
shank_diameter0.250 INCHES NOMINAL IN
style_designatorSTEPPED
thread_directionRIGHT-HAND NUT THREAD
surface_treatmentCADMIUM AND CHROMATE OVERALL
nominal_thread_size0.250 INCHES NUT THREAD IN
thread_quantity_per_inch14 STUD THREAD
thread_series_designatorUNF NUT THREAD
NSN5307-00-948-6558
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: KNHS428JM-9SY-.373 · 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
•
SHANK DIAMETER: 0.250 INCHES NOMINAL IN
•
THREAD LENGTH: 0.375 INCHES MAXIMUM NUT THREAD IN
•
STYLE DESIGNATOR: STEPPED
•
THREAD DIRECTION: RIGHT-HAND STUD THREAD
•
NOMINAL THREAD SIZE: 0.250 INCHES NUT THREAD IN
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.250 INCHES NOMINAL IN
THREAD LENGTH0.375 INCHES MAXIMUM NUT THREAD IN
THREAD LENGTH0.370 INCHES MAXIMUM STUD THREAD IN
STYLE DESIGNATORSTEPPED
OVERALL LENGTH0.933 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND STUD THREAD
THREAD DIRECTIONRIGHT-HAND NUT THREAD
NOMINAL THREAD SIZE0.250 INCHES NUT THREAD IN
NOMINAL THREAD SIZE0.438 INCHES STUD THREAD IN
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
KNHS428M9SY375Reference 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 KNHS428JM-9SY-.373?
KNHS428JM-9SY-.373 is a STUD,STEPPED.
What parts can replace KNHS428JM-9SY-.373?
There is 1 known substitute for KNHS428JM-9SY-.373: KNHS428M9SY375. Substitute compatibility should be verified for your specific system.
What is the NSN for KNHS428JM-9SY-.373?
KNHS428JM-9SY-.373 is cataloged in the U.S. Government catalog under NSN 5307-00-948-6558. 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.